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6311 bearing dimensions & suffix variants

Look up recorded dimensions for designations beginning with 6311. The table retains complete manufacturer designations so special suffixes and different dimensional variants remain visible.

On this page5 sections

Find by measured dimensions

Enter bore d, outside diameter D and width B. Use decimals or inch fractions such as 1/2 or 1 1/4.

Exact model evidence

6311 dimensions and recorded technical data

The recorded 6311 base designation measures 55×120×29 mm (inside diameter d × outside diameter D × width B). This answer uses unsuffixed records from SKF, FAG, NSK, KOYO, NTN. It does not assign the same dimensions or operating ratings to every suffix.

The numeric series boundary is preserved: a longer number is not included merely because its first digits match. 136 recorded variants are listed. A dash means the value is missing, not zero.

Measurement details

Read the original dimensions for 6311

Boundary size alone does not describe every ring, shoulder or assembled unit. These tables retain the recorded manufacturer labels, symbols, units and limits for each complete marking. Expand a record to check its detailed measurements.

Important: an approximate value, a minimum or a maximum keeps that qualifier. These reference extracts are not CAD drawings, fit recommendations or replacement approvals.

SKF 6311-2Z/C3 — 3 dimension fields

Deep groove ball bearing with seals or shields. Source: SKF product catalogue; recorded snapshot 2026-09-02.

The source gives named dimensions but no drawing symbol for some values. An unqualified width is not relabelled as inner-ring B or assembly T.

Use the complete designation shown here. A seal, cage, clearance or precision suffix can matter even when nominal boundary dimensions match.

Bearing and component measurements

Measurement	Source symbol	Recorded value
Bore diameter	Not supplied separately	55.0 mm
Outside diameter	Not supplied separately	120.0 mm
Width	Not supplied separately	29.0 mm

Open the complete SKF 6311-2Z/C3 record →

SKF 6311/C3 — 3 dimension fields

Deep groove ball bearing. Source: SKF product catalogue; recorded snapshot 2026-09-02.

The source gives named dimensions but no drawing symbol for some values. An unqualified width is not relabelled as inner-ring B or assembly T.

Use the complete designation shown here. A seal, cage, clearance or precision suffix can matter even when nominal boundary dimensions match.

Bearing and component measurements

Measurement	Source symbol	Recorded value
Bore diameter	Not supplied separately	55.0 mm
Outside diameter	Not supplied separately	120.0 mm
Width	Not supplied separately	29.0 mm

Open the complete SKF 6311/C3 record →

SKF 6311 — 12 dimension fields

Deep groove ball bearing. Source: SKF product catalogue; recorded snapshot 2026-09-02.

Use the complete designation shown here. A seal, cage, clearance or precision suffix can matter even when nominal boundary dimensions match.

Minimum and maximum mounting dimensions are limits, not nominal bearing dimensions. Check shaft/housing shoulders and fillets against the current drawing before designing a seat.

Bearing and component measurements

Measurement	Source symbol	Recorded value
Bore diameter	d	55 mm
Deviation limits of mid-range bore diameter	t Δdmp	-0.012 to 0 mm
Outside diameter	D	120 mm
Deviation limits of mid-range outside diameter	t ΔDmp	-0.013 to 0 mm
Width	B	29 mm
Deviation limits of ring width	t ΔBs	-0.1 to 0 mm
Shoulder diameter	d 1	≈ 75.34 mm
Recess diameter	D 2	≈ 103.7 mm
Chamfer dimension	r 1,2	min. 2 mm

Mounting limits and abutments

Measurement	Source symbol	Recorded value
Diameter of shaft abutment	d a	min. 66 mm
Diameter of housing abutment	D a	max. 109 mm
Radius of shaft or housing fillet	r a	max. 2 mm

Open the complete SKF 6311 record →

FAG 6311 — 10 dimension fields

Deep groove ball bearing. Source: Schaeffler medias — FAG; recorded snapshot 2026-09-02.

Use the complete designation shown here. A seal, cage, clearance or precision suffix can matter even when nominal boundary dimensions match.

Minimum and maximum mounting dimensions are limits, not nominal bearing dimensions. Check shaft/housing shoulders and fillets against the current drawing before designing a seat.

Bearing and component measurements

Measurement	Source symbol	Recorded value
Bore diameter	d	55 mm
Outside diameter	D	120 mm
Width	B	29 mm
Minimum chamfer dimension	rmin	2 mm
Shoulder diameter outer ring	D1	101.13 mm
Caliber diameter outer ring	D2	104.26 mm
Shoulder diameter inner ring	d1	75.2 mm

Mounting limits and abutments

Measurement	Source symbol	Recorded value
Minimum diameter shaft shoulder	da min	66 mm
Maximum diameter of housing shoulder	Da max	109 mm
Maximum fillet radius	ra max	2 mm

Open the complete FAG 6311 record →

FAG 6311-C3 — 10 dimension fields

Deep groove ball bearing. Source: Schaeffler medias — FAG; recorded snapshot 2026-09-02.

Use the complete designation shown here. A seal, cage, clearance or precision suffix can matter even when nominal boundary dimensions match.

Minimum and maximum mounting dimensions are limits, not nominal bearing dimensions. Check shaft/housing shoulders and fillets against the current drawing before designing a seat.

Bearing and component measurements

Measurement	Source symbol	Recorded value
Bore diameter	d	55 mm
Outside diameter	D	120 mm
Width	B	29 mm
Minimum chamfer dimension	rmin	2 mm
Shoulder diameter outer ring	D1	101.13 mm
Caliber diameter outer ring	D2	104.26 mm
Shoulder diameter inner ring	d1	75.2 mm

Mounting limits and abutments

Measurement	Source symbol	Recorded value
Minimum diameter shaft shoulder	da min	66 mm
Maximum diameter of housing shoulder	Da max	109 mm
Maximum fillet radius	ra max	2 mm

Open the complete FAG 6311-C3 record →

FAG 6311-2Z-C3 — 10 dimension fields

Deep groove ball bearing. Source: Schaeffler medias — FAG; recorded snapshot 2026-09-02.

Use the complete designation shown here. A seal, cage, clearance or precision suffix can matter even when nominal boundary dimensions match.

Minimum and maximum mounting dimensions are limits, not nominal bearing dimensions. Check shaft/housing shoulders and fillets against the current drawing before designing a seat.

Bearing and component measurements

Measurement	Source symbol	Recorded value
Bore diameter	d	55 mm
Outside diameter	D	120 mm
Width	B	29 mm
Minimum chamfer dimension	rmin	2 mm
Shoulder diameter outer ring	D1	101.13 mm
Caliber diameter outer ring	D2	104.26 mm
Shoulder diameter inner ring	d1	75.2 mm

Mounting limits and abutments

Measurement	Source symbol	Recorded value
Minimum diameter shaft shoulder	da min	66 mm
Maximum diameter of housing shoulder	Da max	109 mm
Maximum fillet radius	ra max	2 mm

Open the complete FAG 6311-2Z-C3 record →

KOYO 6311 — 3 dimension fields

Deep groove ball bearing. Source: JTEKT / Koyo product catalogue; recorded snapshot 2026-09-02.

Use the complete designation shown here. A seal, cage, clearance or precision suffix can matter even when nominal boundary dimensions match.

Bearing and component measurements

Measurement	Source symbol	Recorded value
Bore diameter	d	55 mm
Outside diameter	D	120 mm
Width	B	29 mm

Open the complete KOYO 6311 record →

KOYO 6311 2RS — 3 dimension fields

Deep groove ball bearing. Source: JTEKT / Koyo product catalogue; recorded snapshot 2026-09-02.

Use the complete designation shown here. A seal, cage, clearance or precision suffix can matter even when nominal boundary dimensions match.

Bearing and component measurements

Measurement	Source symbol	Recorded value
Bore diameter	d	55 mm
Outside diameter	D	120 mm
Width	B	29 mm

Open the complete KOYO 6311 2RS record →

KOYO 6311 ZZ — 3 dimension fields

Deep groove ball bearing. Source: JTEKT / Koyo product catalogue; recorded snapshot 2026-09-02.

Use the complete designation shown here. A seal, cage, clearance or precision suffix can matter even when nominal boundary dimensions match.

Bearing and component measurements

Measurement	Source symbol	Recorded value
Bore diameter	d	55 mm
Outside diameter	D	120 mm
Width	B	29 mm

Open the complete KOYO 6311 ZZ record →

TIMKEN 6311-2RS — 4 dimension fields

Deep groove ball bearing. Source: Timken official dimensional catalogue; recorded snapshot 2026-10-01.

Metric and inch measurements below are the values published together in this dated manufacturer record. Their displayed rounding is retained; the inch column does not turn a metric design into an inch-series design.

Keep the full marking shown for this record. Equal nominal dimensions do not establish matching closure, clearance, precision, material or operating limits.

Shaft and housing backing-shoulder dimensions, maximum fillet radii and signed offsets answer different installation questions. Preserve the named face, limit and sign; they are not additional bearing outside diameters or nominal widths.

This factual extract is a dimensional reference, not an OEM fitment statement, a replacement approval or a downloadable CAD model.

Bearing and component measurements

Measurement	Source symbol	Recorded value
Bore (d)	d	55 mm
O.D. (D)	D	120 mm / 4.724 in
Width (B)	B	29 mm / 1.142 in

Mounting limits and abutments

Measurement	Source symbol	Recorded value
Max Shaft Fillet Radius	Not supplied separately	2.0 mm / 0.079 in

Open the complete TIMKEN 6311-2RS record →

TIMKEN 6311-ZZ — 4 dimension fields

Deep groove ball bearing. Source: Timken official dimensional catalogue; recorded snapshot 2026-10-01.

Keep the full marking shown for this record. Equal nominal dimensions do not establish matching closure, clearance, precision, material or operating limits.

This factual extract is a dimensional reference, not an OEM fitment statement, a replacement approval or a downloadable CAD model.

Bearing and component measurements

Measurement	Source symbol	Recorded value
Bore (d)	d	55 mm
O.D. (D)	D	120 mm / 4.724 in
Width (B)	B	29 mm / 1.142 in

Mounting limits and abutments

Measurement	Source symbol	Recorded value
Max Shaft Fillet Radius	Not supplied separately	2.0 mm / 0.079 in

Open the complete TIMKEN 6311-ZZ record →

TIMKEN 6311 — 4 dimension fields

Deep groove ball bearing. Source: Timken official dimensional catalogue; recorded snapshot 2026-10-01.

Keep the full marking shown for this record. Equal nominal dimensions do not establish matching closure, clearance, precision, material or operating limits.

This factual extract is a dimensional reference, not an OEM fitment statement, a replacement approval or a downloadable CAD model.

Bearing and component measurements

Measurement	Source symbol	Recorded value
Bore (d)	d	55 mm
O.D. (D)	D	120 mm / 4.724 in
Width (B)	B	29 mm / 1.142 in

Mounting limits and abutments

Measurement	Source symbol	Recorded value
Max Shaft Fillet Radius	Not supplied separately	2.0 mm / 0.079 in

Open the complete TIMKEN 6311 record →

TIMKEN 6311-C3 — 4 dimension fields

Deep groove ball bearing. Source: Timken official dimensional catalogue; recorded snapshot 2026-10-01.

Keep the full marking shown for this record. Equal nominal dimensions do not establish matching closure, clearance, precision, material or operating limits.

This factual extract is a dimensional reference, not an OEM fitment statement, a replacement approval or a downloadable CAD model.

Bearing and component measurements

Measurement	Source symbol	Recorded value
Bore (d)	d	55 mm
O.D. (D)	D	120 mm / 4.724 in
Width (B)	B	29 mm / 1.142 in

Mounting limits and abutments

Measurement	Source symbol	Recorded value
Max Shaft Fillet Radius	Not supplied separately	2.0 mm / 0.079 in

Open the complete TIMKEN 6311-C3 record →

Check shaft and hole fit →Search measured dimensions →

Exact designation reference

Catalogue parameters for 6311

Choose the complete brand and marking before reading a value. These source-labelled records add dimensions, construction and engineering properties where they were recorded; a shared model number does not establish interchangeability.

Units, ranges and minimum/maximum qualifiers are retained. The data is a dated catalogue reference, not a certified drawing, a complete current specification or an operating approval.

SKF 6311 FAG 6311 KOYO 6311

SKF 6311 — 45 recorded parameters

Deep groove ball bearing

Reference: SKF product catalogue; source snapshot 2026-09-02.

Read the complete suffix and recorded construction. Similar dimensions do not prove identical seals, clearance, precision or material.

Values shown are retained from the recorded source. Zero boundary dimensions and zero load ratings from incomplete legacy feeds are withheld rather than presented as usable specifications.

Dimensions

Parameter	Source symbol	Recorded value
Bore diameter	Not separately recorded	55.0 mm
Outside diameter	Not separately recorded	120.0 mm
Width	Not separately recorded	29.0 mm

Performance

Parameter	Source symbol	Recorded value
Basic dynamic load rating	Not separately recorded	74.1 kN
Basic static load rating	Not separately recorded	45.0 kN
Reference speed	Not separately recorded	12000.0 r/min
Limiting speed	Not separately recorded	8000.0 r/min
SKF performance class	Not separately recorded	SKF Explorer

Properties

Parameter	Source symbol	Recorded value
Filling slots	Not separately recorded	Without
Number of rows	Not separately recorded	1
Locating feature, bearing outer ring	Not separately recorded	Without
Bore type	Not separately recorded	Cylindrical
Cage	Not separately recorded	Sheet metal
Matched arrangement	Not separately recorded	No
Radial internal clearance	Not separately recorded	CN
Material, bearing	Not separately recorded	Bearing steel
Coating	Not separately recorded	Without
Sealing	Not separately recorded	Without
Relubrication feature	Not separately recorded	Without
Indicative carbon footprint for new product	Not separately recorded	5.0 kg CO 2 e

Logistics

Parameter	Source symbol	Recorded value
Product net weight	Not separately recorded	1.34 kg

Engineering — Dimensions

Parameter	Source symbol	Recorded value
Bore diameter	d	55 mm
Deviation limits of mid-range bore diameter	t Δdmp	-0.012 to 0 mm
Outside diameter	D	120 mm
Deviation limits of mid-range outside diameter	t ΔDmp	-0.013 to 0 mm
Width	B	29 mm
Deviation limits of ring width	t ΔBs	-0.1 to 0 mm
Shoulder diameter	d 1	≈ 75.34 mm
Recess diameter	D 2	≈ 103.7 mm
Chamfer dimension	r 1,2	min. 2 mm
ISO tolerance class for dimensions	Not separately recorded	P6 and tighter width tolerance

Engineering — Abutment dimensions

Parameter	Source symbol	Recorded value
Diameter of shaft abutment	d a	min. 66 mm
Diameter of housing abutment	D a	max. 109 mm
Radius of shaft or housing fillet	r a	max. 2 mm

Engineering — Calculation data

Parameter	Source symbol	Recorded value
SKF performance class	Not separately recorded	SKF Explorer
Basic dynamic load rating	C	74.1 kN
Basic static load rating	C 0	45 kN
Fatigue load limit	P u	1.9 kN
Reference speed	Not separately recorded	12000 r/min
Limiting speed	Not separately recorded	8000 r/min
Minimum load factor	k r	0.03
Calculation factor	f 0	13.1

Engineering — Tolerances of run-out

Parameter	Source symbol	Recorded value
Range of section height at inner ring of assembled bearing	t Kia	20 µm
Range of section height at outer ring of assembled bearing	t Kea	35 µm
ISO tolerance class for geometrical tolerances	Not separately recorded	Normal

Open SKF 6311 product record →

FAG 6311 — 48 recorded parameters

Deep groove ball bearing

Reference: Schaeffler medias — FAG; source snapshot 2026-09-02.

Read the complete suffix and recorded construction. Similar dimensions do not prove identical seals, clearance, precision or material.

Values shown are retained from the recorded source. Zero boundary dimensions and zero load ratings from incomplete legacy feeds are withheld rather than presented as usable specifications.

Main Dimensions & Performance Data

Parameter	Source symbol	Recorded value
Bore diameter	d	55 mm
Bore diameter	d	2.165 in
Outside diameter	D	120 mm
Outside diameter	D	4.724 in
Width	B	29 mm
Width	B	1.142 in
Basic dynamic load rating, radial	Cr	83,000 N
Basic dynamic load rating, radial	Cr	18,660.072 lbf
Basic static load rating, radial	C0r	47,500 N
Basic static load rating, radial	C0r	10,678.957 lbf
Fatigue load limit, radial	Cur	3,250 N
Fatigue load limit, radial	Cur	730.665 lbf
Limiting speed	nG	8,500 1/min
Reference speed	nϑr	7,100 1/min
Mass	≈m	1.329 kg
Mass	≈m	2.93 lbs

Mounting dimensions

Parameter	Source symbol	Recorded value
Minimum diameter shaft shoulder	da min	66 mm
Minimum diameter shaft shoulder	da min	2.598 in
Maximum diameter of housing shoulder	Da max	109 mm
Maximum diameter of housing shoulder	Da max	4.291 in
Maximum fillet radius	ra max	2 mm
Maximum fillet radius	ra max	0.079 in

Dimensions

Parameter	Source symbol	Recorded value
Minimum chamfer dimension	rmin	2 mm
Minimum chamfer dimension	rmin	0.079 in
Shoulder diameter outer ring	D1	101.13 mm
Shoulder diameter outer ring	D1	3.981 in
Caliber diameter outer ring	D2	104.26 mm
Caliber diameter outer ring	D2	4.105 in
Shoulder diameter inner ring	d1	75.2 mm
Shoulder diameter inner ring	d1	2.961 in

Temperature range

Parameter	Source symbol	Recorded value
Operating temperature min.	Tmin	-30 °C
Operating temperature min.	Tmin	-22 °F
Operating temperature max.	Tmax	150 °C
Operating temperature max.	Tmax	302 °F

Calculation factors

Parameter	Source symbol	Recorded value
Calculation factor	f0	12.9

Product characteristics

Parameter	Source symbol	Recorded value
Type of Seal	Without	Not sealed
Cage	JN	Steel sheet metal
Tolerance class	PN	Normal (ISO 492:2023)
Dimensional / heat stabilization	S0	Rings dimensional stabilized up to 150°
Lubricant	Without	Bearing not greased
Radial internal clearance	CN (Group N)	Normal internal clearance
Bore type	Z	Cylindrical

Capabilities & suitability

Parameter	Source symbol	Recorded value
Radial load capacity	Not separately recorded	Yes
Axial load capacity in one direction	Not separately recorded	Yes
Axial load capacity in both directions	Not separately recorded	Yes
Suitable for grease lubrication	Not separately recorded	Yes
Suitable for oil lubrication	Not separately recorded	Yes
Unsealed design	Not separately recorded	Yes

Open FAG 6311 product record →

KOYO 6311 — 14 recorded parameters

Deep groove ball bearing

Reference: JTEKT / Koyo catalogue; source snapshot 2026-09-02.

Read the complete suffix and recorded construction. Similar dimensions do not prove identical seals, clearance, precision or material.

Values shown are retained from the recorded source. Zero boundary dimensions and zero load ratings from incomplete legacy feeds are withheld rather than presented as usable specifications.

Technical Data

Parameter	Source symbol	Recorded value
d	Not separately recorded	55 mm
D	Not separately recorded	120 mm
B	Not separately recorded	29 mm
R(Min.)	Not separately recorded	2 mm
Basic Load Ratings : Cr	Not separately recorded	89.5 kN
Basic Load Ratings : C0R	Not separately recorded	45.0 kN
Fatigue Load Limit : Cu	Not separately recorded	3.45 kN
Factor : F0	Not separately recorded	13.2
Limiting Speeds(Grease Lub.)	Not separately recorded	5600 min-1
Limiting Speeds(Oil Lub.)	Not separately recorded	6700 min-1
Da(Min.)	Not separately recorded	64 mm
Da(Max.)	Not separately recorded	111 mm
Ra(Max.)	Not separately recorded	2 mm
Mass(Refer.)	Not separately recorded	1.37 kg

Open KOYO 6311 product record →

Clearance tables →Precision classes →Load calculations →Interchange checks →

Brand / full designation	Named dimensions (mm / in)	Dynamic C (kN)	Static C0 (kN)	Reference speed (rpm)	Limiting speed (rpm)	Mass (kg / g)
SKF6311Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	8000 rpm	1.34 kg1340 g
FAG6311Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7100 rpm	8500 rpm	1.329 kg1329 g
TIMKEN6311Deep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	71.6 kN	44.8 kN	—	—	1.37 kg1370 g
NSK6311Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Bearing width (B) 29 mm 1.141732 in	78.5 kN	44.5 kN	—	—	1.37 kg1370 g
KOYO6311Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	89.5 kN	45 kN	—	5600 rpmLimiting Speeds(Grease Lub.): 5600 min-1Limiting Speeds(Oil Lub.): 6700 min-1	1.37 kg1370 g
NTN6311Deep groove ball bearing	Internal diameter (d) 55 mm 2.165354 in External diameter (D) 120 mm 4.724409 in Bearing/Inner ring width (B) 29 mm 1.141732 in	79.5 kN	45 kN	—	—	1.37 kg1370 g
SKF6311-2RS1Deep groove ball bearing with seals or shields	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	74.1 kN	45 kN	—	3800 rpm	1.38 kg1380 g
SKF6311-2RS1/C3Deep groove ball bearing with seals or shields	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	3800 rpm	1.38 kg1380 g
SKF6311-2RS1/C3GJNDeep groove ball bearing with seals or shields	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	3800 rpm	1.38 kg1380 g
SKF6311-2RS1/C4Deep groove ball bearing with seals or shields	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	—	3800 rpm	1.38 kg1380 g
SKF6311-2RS1/GJNDeep groove ball bearing with seals or shields	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	3800 rpm	1.38 kg1380 g
SKF6311-2RS1/HC5C3S0WTHybrid ceramic deep groove ball bearing with seals on both sides	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	71.5 kN	45 kN	—	3800 rpm	1.21 kg1210 g
SKF6311-2RS1/HC5C3WTHybrid ceramic deep groove ball bearing with seals on both sides	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	71.5 kN	45 kN	—	3800 rpm	1.21 kg1210 g
SKF6311-2RSHDeep groove ball bearing with seals	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	74.1 kN	45 kN	—	3800 rpm	1.4 kg1400 g
SKF6311 2RSJEMDeep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	—	3800 rpm	1.38 kg1380 g
SKF6311 2RSNRJEMDeep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	—	3800 rpm	1.42 kg1420 g
SKF6311-2ZDeep groove ball bearing with seals or shields	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	6300 rpm	1.39 kg1390 g
SKF6311-2Z/C3Deep groove ball bearing with seals or shields	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	6300 rpm	1.39 kg1390 g
SKF6311-2Z/C3GJNDeep groove ball bearing with seals or shields	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	6300 rpm	1.4 kg1400 g
SKF6311-2Z/C4Deep groove ball bearing with seals or shields	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	6300 rpm	1.38 kg1380 g
SKF6311-2Z/HC5C3WTHybrid ceramic deep groove ball bearing with seals on both sides	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	71.5 kN	45 kN	14000 rpm	8000 rpm	1.25 kg1250 g
SKF6311 2ZJEMDeep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	6300 rpm	1.4 kg1400 g
SKF6311-2ZNRDeep groove ball bearing with snap ring and integral sealing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	6300 rpm	1.45 kg1450 g
SKF6311 2ZNRJEMDeep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	6300 rpm	1.44 kg1440 g
SKF6311-2ZTN2/C3GJNDeep groove ball bearing with seals or shields	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	6300 rpm	1.37 kg1370 g
SKF6311-2Z/VA201Deep groove ball bearing for high temperature applications with shields on both sides	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	—	45 kN	—	50 rpm	1.39 kg1390 g
SKF6311-2Z/VA208Deep groove ball bearing for high temperature applications with shields on both sides	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	—	45 kN	—	50 rpm	1.41 kg1410 g
SKF6311-2Z/VA228Deep groove ball bearing for high temperature applications with shields on both sides	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	—	45 kN	—	100 rpm	1.41 kg1410 g
SKF6311/AXDDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	90.4 kN	45 kN	12000 rpm	8500 rpm	1.37 kg1370 g
SKF6311/C3Deep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	8000 rpm	1.34 kg1340 g
SKF6311/C4Deep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	8000 rpm	1.34 kg1340 g
SKF6311/C4S1VK176Deep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	8000 rpm	1.33 kg1330 g
SKF6311/HC5C3Hybrid ceramic deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	71.5 kN	45 kN	14000 rpm	9000 rpm	1.17 kg1170 g
SKF6311 JEMDeep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	8000 rpm	1.35 kg1350 g
SKF6311 M/C3VL0241INSOCOAT® deep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	11000 rpm	1.53 kg1530 g
SKF6311 M/C4VL0241INSOCOAT® deep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	11000 rpm	1.53 kg1530 g
SKF6311 NDeep groove ball bearing with snap ring groove	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	8000 rpm	1.32 kg1320 g
SKF6311 NRDeep groove ball bearing with snap ring	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	8000 rpm	1.38 kg1380 g
SKF6311 NR/C3Deep groove ball bearing with snap ring	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	8000 rpm	1.38 kg1380 g
SKF6311 NRJEMDeep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	8000 rpm	1.39 kg1390 g
SKF6311-RS1Deep groove ball bearing with seals or shields	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	74.1 kN	45 kN	—	3800 rpm	1.35 kg1350 g
SKF6311-RS1/C3Deep groove ball bearing with seals or shields	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	8000 rpm	1.35 kg1350 g
SKF6311 RSJEMDeep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	—	3800 rpm	1.35 kg1350 g
SKF6311/VA201Deep groove ball bearing for high temperature applications	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	—	45 kN	—	50 rpm	1.35 kg1350 g
SKF6311/W64Deep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	—	3400 rpm	1.37 kg1370 g
SKF6311-ZDeep groove ball bearing with seals or shields	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	8000 rpm	1.35 kg1350 g
SKF6311-Z/C3Deep groove ball bearing with seals or shields	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	8000 rpm	1.35 kg1350 g
SKF6311-Z/C3GJNDeep groove ball bearing with seals or shields	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	8000 rpm	1.37 kg1370 g
SKF6311-Z/HC5C3Hybrid ceramic deep groove ball bearing with seals on both sides	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	71.5 kN	45 kN	14000 rpm	—	1.35 kg1350 g
SKF6311 ZJEMDeep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	8000 rpm	1.37 kg1370 g
SKF6311-ZNRDeep groove ball bearing with snap ring and integral sealing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	8000 rpm	1.39 kg1390 g
SKF6311 ZNRJEMDeep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	74.1 kN	45 kN	12000 rpm	8000 rpm	1.41 kg1410 g
FAG6311-2RSRDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	—	3550 rpm	1.375 kg1375 g
FAG6311-2RSR-C3Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	—	3550 rpm	1.43 kg1430 g
FAG6311-2RSR-L140Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	—	3550 rpm	1.375 kg1375 g
FAG6311-2RSR-L140-C3Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	—	3550 rpm	1.375 kg1375 g
FAG6311-2ZDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7100 rpm	7200 rpm	1.375 kg1375 g
FAG6311-2Z-C3Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7100 rpm	7200 rpm	1.375 kg1375 g
FAG6311-2Z-C4Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7100 rpm	7200 rpm	1.375 kg1375 g
FAG6311-2Z-L038Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7100 rpm	7200 rpm	1.375 kg1375 g
FAG6311-2Z-L140Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7100 rpm	7200 rpm	1.375 kg1375 g
FAG6311-2Z-L140-C3Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7100 rpm	7200 rpm	1.375 kg1375 g
FAG6311-2Z-L237-C4Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7100 rpm	7200 rpm	1.375 kg1375 g
FAG6311-CDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7800 rpm	8500 rpm	1.297 kg1297 g
FAG6311-C2Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7100 rpm	8500 rpm	1.329 kg1329 g
FAG6311-C-2HRSDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	—	5300 rpm	1.35 kg1350 g
FAG6311-C-2HRS-C3Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	—	5300 rpm	1.35 kg1350 g
FAG6311-C-2HRS-C4Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	—	5300 rpm	1.37 kg1370 g
FAG6311-C-2HRS-L138-C3Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	—	5300 rpm	1.35 kg1350 g
FAG6311-C-2HRS-L237-C3Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	—	5300 rpm	1.37 kg1370 g
FAG6311-C-2HRS-L237-C4Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	—	5300 rpm	1.37 kg1370 g
FAG6311-C-2ZDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7800 rpm	7200 rpm	1.348 kg1348 g
FAG6311-C-2Z-C3Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7800 rpm	7200 rpm	1.348 kg1348 g
FAG6311-C-2Z-L100-C3Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7800 rpm	7200 rpm	1.35 kg1350 g
FAG6311-C-2Z-L237-C4Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7800 rpm	7200 rpm	1.35 kg1350 g
FAG6311-C3Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7100 rpm	8500 rpm	1.329 kg1329 g
FAG6311-C4Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7100 rpm	8500 rpm	1.329 kg1329 g
FAG6311-C-C3Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7800 rpm	8500 rpm	1.297 kg1297 g
FAG6311-C-C4Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7800 rpm	8500 rpm	1.297 kg1297 g
FAG6311-C-HRSDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	—	5300 rpm	1.315 kg1315 g
FAG6311-C-HRS-C3Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	—	5300 rpm	1.315 kg1315 g
FAG6311-C-MDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7800 rpm	11000 rpm	1.6 kg1600 g
FAG6311-C-M-C3Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7800 rpm	11000 rpm	1.6 kg1600 g
FAG6311-C-M-C4Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7800 rpm	11000 rpm	1.6 kg1600 g
FAG6311-C-NDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7800 rpm	8500 rpm	1.32 kg1320 g
FAG6311-C-N-C3Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7800 rpm	8500 rpm	1.33 kg1330 g
FAG6311-C-ZDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7800 rpm	8500 rpm	1.311 kg1311 g
FAG6311-C-Z-C3Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7800 rpm	8500 rpm	1.311 kg1311 g
FAG6311-C-Z-NDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7800 rpm	8500 rpm	1.33 kg1330 g
FAG6311-H-2RSR-SN-C3>NDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	66.91 kN	41.89 kN	—	3550 rpm	1.39 kg1390 g
FAG6311-H-2RSR-SN>NDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	66.91 kN	41.89 kN	—	3550 rpm	1.39 kg1390 g
FAG6311-H-2Z-SN-C3>NDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	66.91 kN	41.89 kN	7200 rpm	6700 rpm	1.38 kg1380 g
FAG6311-H-2Z-SN>NDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	66.91 kN	41.89 kN	7200 rpm	6700 rpm	1.38 kg1380 g
FAG6311-H-SN-C3>NDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	66.91 kN	41.89 kN	7200 rpm	7900 rpm	1.4 kg1400 g
FAG6311-H-SN>NDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	66.91 kN	41.89 kN	7200 rpm	7900 rpm	1.4 kg1400 g
FAG6311-J20AADeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7100 rpm	8500 rpm	1.37 kg1370 g
FAG6311-J20AA-C3Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7100 rpm	8500 rpm	1.37 kg1370 g
FAG6311-MDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7100 rpm	11000 rpm	1.6 kg1600 g
FAG6311-M-C3Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7100 rpm	11000 rpm	1.594 kg1594 g
FAG6311-M-J20AADeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7100 rpm	11000 rpm	1.616 kg1616 g
FAG6311-M-J20AA-C3Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7100 rpm	11000 rpm	1.616 kg1616 g
FAG6311-M-J20AA-C4Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7100 rpm	11000 rpm	1.616 kg1616 g
FAG6311-M-J20GA-C3Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7100 rpm	11000 rpm	1.61 kg1610 g
FAG6311-NDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7100 rpm	8500 rpm	1.34 kg1340 g
FAG6311-N-C3Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7100 rpm	8500 rpm	1.34 kg1340 g
FAG6311-RSRDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	—	3550 rpm	1.38 kg1380 g
FAG6311-ZDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7100 rpm	8500 rpm	1.35 kg1350 g
FAG6311-Z-C3Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7100 rpm	8500 rpm	1.4 kg1400 g
FAG6311-Z-C4Deep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7100 rpm	8500 rpm	1.413 kg1413 g
FAG6311-Z-NDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	83 kN	47.5 kN	7100 rpm	8500 rpm	1.37 kg1370 g
TIMKEN6311-2RSDeep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	71.6 kN	44.8 kN	—	—	1.37 kg1370 g
TIMKEN6311-2RS-C3Deep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	71.6 kN	44.8 kN	—	—	1.37 kg1370 g
TIMKEN6311-2RS-C4Deep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	71.6 kN	44.8 kN	—	—	1.37 kg1370 g
TIMKEN6311-2RS/VSL609Deep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	71.6 kN	44.8 kN	—	—	1.37 kg1370 g
TIMKEN6311-2RZDeep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	71.6 kN	44.8 kN	—	—	1.35 kg1350 g
TIMKEN6311-2RZ-C3Deep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	71.6 kN	44.8 kN	—	—	1.35 kg1350 g
TIMKEN6311-2RZ-NRDeep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	71.6 kN	44.8 kN	—	—	1.35 kg1350 g
TIMKEN6311-C3Deep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	71.6 kN	44.8 kN	—	—	1.37 kg1370 g
TIMKEN6311M-C3Deep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	71.6 kN	44.8 kN	—	—	1.26 kg1260 g
TIMKEN6311-NRDeep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	71.6 kN	44.8 kN	—	—	1.37 kg1370 g
TIMKEN6311-NR-C3Deep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	71.6 kN	44.8 kN	—	—	1.35 kg1350 g
TIMKEN6311-RSDeep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	71.6 kN	44.8 kN	—	—	1.37 kg1370 g
TIMKEN6311-RS-C3Deep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	71.6 kN	44.8 kN	—	—	1.37 kg1370 g
TIMKEN6311-ZDeep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	71.6 kN	44.8 kN	—	—	1.37 kg1370 g
TIMKEN6311-Z-C3Deep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	71.6 kN	44.8 kN	—	—	1.37 kg1370 g
TIMKEN6311-Z-NRDeep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	71.6 kN	44.8 kN	—	—	1.35 kg1350 g
TIMKEN6311-Z-NR-C3Deep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	71.6 kN	44.8 kN	—	—	1.35 kg1350 g
TIMKEN6311-ZZDeep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	71.6 kN	44.8 kN	—	—	1.37 kg1370 g
TIMKEN6311-ZZ-C3Deep groove ball bearing	Recorded bore (d) 55 mm 2.165354 in Recorded outside dimension (D) 120 mm 4.724409 in Catalogue width (symbol unverified) 29 mm 1.141732 in	71.6 kN	44.8 kN	—	—	1.37 kg1370 g
NSK6311DDUDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Bearing width (B) 29 mm 1.141732 in	78.5 kN	44.5 kN	—	—	—
NSK6311VVDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Bearing width (B) 29 mm 1.141732 in	78.5 kN	44.5 kN	—	—	—
NSK6311ZZDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Bearing width (B) 29 mm 1.141732 in	78.5 kN	44.5 kN	—	—	—
KOYO6311 2RSDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	89.5 kN	45 kN	—	3700 rpmLimiting Speeds(Grease Lub.): 3700 min-1	1.37 kg1370 g
KOYO6311 2RUDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	89.5 kN	45 kN	—	5600 rpmLimiting Speeds(Grease Lub.): 5600 min-1	1.37 kg1370 g
KOYO6311NRDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	89.5 kN	45 kN	—	5600 rpmLimiting Speeds(Grease Lub.): 5600 min-1Limiting Speeds(Oil Lub.): 6700 min-1	1.37 kg1370 g
KOYO6311 ZZDeep groove ball bearing	Bore diameter (d) 55 mm 2.165354 in Outside diameter (D) 120 mm 4.724409 in Width (B) 29 mm 1.141732 in	89.5 kN	45 kN	—	5600 rpmLimiting Speeds(Grease Lub.): 5600 min-1	1.37 kg1370 g

Compare recorded seals, clearance, precision and materials

Manufacturer wording is retained. A missing property is not inferred from another brand or a similar suffix.

Brand / designation	Closure	Original precision	Clearance	Cage	Material	Lubricant
SKF 6311	Without	P6 and tighter width tolerance	CN	Sheet metal	Bearing steel	None
FAG 6311	Without — Not sealed	PN — Normal (ISO 492:2023)	CN (Group N) — Normal internal clearance	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
TIMKEN 6311	Open	Not recorded	Not recorded	Steel cage	Not recorded	Not recorded
NSK 6311	Open	Not recorded	Not recorded	Not recorded	Not recorded	Not recorded
KOYO 6311	Open	Not recorded	Not recorded	Not recorded	Not recorded	Not recorded
NTN 6311	open	Not recorded	CN	pressed steel cage	Not recorded	Not recorded
SKF 6311-2RS1	Seal on both sides	P6 and tighter width tolerance	CN	Sheet metal	Bearing steel	Grease
SKF 6311-2RS1/C3	Seal on both sides	Not recorded	C3	Sheet metal	Bearing steel	Grease
SKF 6311-2RS1/C3GJN	Seal on both sides	Not recorded	C3	Sheet metal	Bearing steel	Grease
SKF 6311-2RS1/C4	Seal on both sides	Not recorded	C4	Sheet metal	Bearing steel	Grease
SKF 6311-2RS1/GJN	Seal on both sides	Not recorded	CN	Sheet metal	Bearing steel	Grease
SKF 6311-2RS1/HC5C3S0WT	Seal on both sides	Not recorded	C3	Sheet metal	Hybrid (ceramic balls)	Grease
SKF 6311-2RS1/HC5C3WT	Seal on both sides	Not recorded	C3	Sheet metal	Hybrid (ceramic balls)	Grease
SKF 6311-2RSH	Seal on both sides	P6 and tighter width tolerance	CN	Sheet metal	Bearing steel	Grease
SKF 6311 2RSJEM	Seal on both sides	Not recorded	C3	Not recorded	Bearing steel	Grease
SKF 6311 2RSNRJEM	Seal on both sides	Not recorded	C3	Sheet metal	Bearing steel	Grease
SKF 6311-2Z	Shield on both sides	P6 and tighter width tolerance	CN	Sheet metal	Bearing steel	Grease
SKF 6311-2Z/C3	Shield on both sides	Not recorded	C3	Sheet metal	Bearing steel	Grease
SKF 6311-2Z/C3GJN	Shield on both sides	Not recorded	C3	Sheet metal	Bearing steel	Grease
SKF 6311-2Z/C4	Shield on both sides	Not recorded	C4	Sheet metal	Bearing steel	Grease
SKF 6311-2Z/HC5C3WT	Shield on both sides	Not recorded	C3	Sheet metal	Hybrid (ceramic balls)	Grease
SKF 6311 2ZJEM	Shield on both sides	Not recorded	C3	Not recorded	Bearing steel	Grease
SKF 6311-2ZNR	Shield on both sides	P6 and tighter width tolerance	CN	Sheet metal	Bearing steel	Grease
SKF 6311 2ZNRJEM	Shield on both sides	Not recorded	C3	Sheet metal	Bearing steel	Grease
SKF 6311-2ZTN2/C3GJN	Shield on both sides	Not recorded	C3	Non-metallic	Bearing steel	Grease
SKF 6311-2Z/VA201	Shield on both sides	Not recorded	Multiples of C5	Sheet metal	High temperature steel	Solid lubricant
SKF 6311-2Z/VA208	Shield on both sides	Not recorded	Multiples of C5	Non-metallic	High temperature steel	Solid lubricant
SKF 6311-2Z/VA228	Shield on both sides	Not recorded	Multiples of C5	Non-metallic	High temperature steel	Solid lubricant
SKF 6311/AXD	Without	P6 and tighter width tolerance	CN	Sheet metal	Bearing steel	None
SKF 6311/C3	Without	Not recorded	C3	Sheet metal	Bearing steel	None
SKF 6311/C4	Without	Not recorded	C4	Sheet metal	Bearing steel	None
SKF 6311/C4S1VK176	Without	Not recorded	C4	Sheet metal	Bearing steel	None
SKF 6311/HC5C3	Without	Not recorded	C3	Sheet metal	Hybrid (ceramic balls)	None
SKF 6311 JEM	Without	Not recorded	C3	Not recorded	Bearing steel	None
SKF 6311 M/C3VL0241	Without	Not recorded	CN	Machined brass	Bearing steel	None
SKF 6311 M/C4VL0241	Without	Not recorded	C4	Machined brass	Bearing steel	None
SKF 6311 N	Without	P6 and tighter width tolerance	CN	Sheet metal	Bearing steel	None
SKF 6311 NR	Without	P6 and tighter width tolerance	CN	Sheet metal	Bearing steel	None
SKF 6311 NR/C3	Without	Not recorded	C3	Sheet metal	Bearing steel	None
SKF 6311 NRJEM	Without	Not recorded	C3	Sheet metal	Bearing steel	None
SKF 6311-RS1	Seal on one side	P6 and tighter width tolerance	CN	Sheet metal	Bearing steel	None
SKF 6311-RS1/C3	Seal on one side	Not recorded	C3	Sheet metal	Bearing steel	None
SKF 6311 RSJEM	Seal on one side	Not recorded	C3	Sheet metal	Bearing steel	None
SKF 6311/VA201	Without	Not recorded	Multiples of C5	Sheet metal	High temperature steel	Solid lubricant
SKF 6311/W64	Without	Not recorded	CN	Sheet metal	Bearing steel	Solid Oil
SKF 6311-Z	Shield on one side	P6 and tighter width tolerance	CN	Sheet metal	Bearing steel	None
SKF 6311-Z/C3	Shield on one side	Not recorded	C3	Sheet metal	Bearing steel	None
SKF 6311-Z/C3GJN	Shield on one side	Not recorded	C3	Sheet metal	Bearing steel	None
SKF 6311-Z/HC5C3	Shield on one side	Not recorded	C3	Not recorded	Hybrid (ceramic balls)	None
SKF 6311 ZJEM	Shield on one side	Not recorded	C3	Not recorded	Bearing steel	None
SKF 6311-ZNR	Shield on one side	P6 and tighter width tolerance	CN	Not recorded	Bearing steel	None
SKF 6311 ZNRJEM	Shield on one side	Not recorded	C3	Sheet metal	Bearing steel	None
FAG 6311-2RSR	2RSR — Contact seal on both sides	PN — Normal (ISO 492:2023)	CN (Group N) — Normal internal clearance	JN — Steel sheet metal	Not recorded	GA13 — Ball bearing and insert bearing grease
FAG 6311-2RSR-C3	2RSR — Contact seal on both sides	PN — Normal (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	JN — Steel sheet metal	Not recorded	GA13 — Ball bearing and insert bearing grease
FAG 6311-2RSR-L140	2RSR — Contact seal on both sides	PN — Normal (ISO 492:2023)	CN (Group N) — Normal internal clearance	JN — Steel sheet metal	Not recorded	L140 — Grease (L140/customer specific)
FAG 6311-2RSR-L140-C3	2RSR — Contact seal on both sides	PN — Normal (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	JN — Steel sheet metal	Not recorded	L140 — Grease (L140/customer specific)
FAG 6311-2Z	2Z — Non-contact shield on both sides	PN — Normal (ISO 492:2023)	CN (Group N) — Normal internal clearance	JN — Steel sheet metal	Not recorded	GA13 — Ball bearing and insert bearing grease
FAG 6311-2Z-C3	2Z — Non-contact shield on both sides	PN — Normal (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	JN — Steel sheet metal	Not recorded	GA13 — Ball bearing and insert bearing grease
FAG 6311-2Z-C4	2Z — Non-contact shield on both sides	PN — Normal (ISO 492:2023)	C4 (Group 4) — Internal clearance larger than C3	JN — Steel sheet metal	Not recorded	GA13 — Ball bearing and insert bearing grease
FAG 6311-2Z-L038	2Z — Non-contact shield on both sides	PN — Normal (ISO 492:2023)	CN (Group N) — Normal internal clearance	JN — Steel sheet metal	Not recorded	L038 — Grease (L038/customer specific)
FAG 6311-2Z-L140	2Z — Non-contact shield on both sides	PN — Normal (ISO 492:2023)	CN (Group N) — Normal internal clearance	JN — Steel sheet metal	Not recorded	L140 — Grease (L140/customer specific)
FAG 6311-2Z-L140-C3	2Z — Non-contact shield on both sides	PN — Normal (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	JN — Steel sheet metal	Not recorded	L140 — Grease (L140/customer specific)
FAG 6311-2Z-L237-C4	2Z — Non-contact shield on both sides	PN — Normal (ISO 492:2023)	C4 (Group 4) — Internal clearance larger than C3	JN — Steel sheet metal	Not recorded	L237 — Grease (L237/customer specific)
FAG 6311-C	Without — Not sealed	P6 — Class 6 (ISO 492:2023)	CN (Group N) — Normal internal clearance	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
FAG 6311-C2	Without — Not sealed	PN — Normal (ISO 492:2023)	C2 (Group 2) — Internal clearance smaller than CN	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
FAG 6311-C-2HRS	2HRS — Contact seal on both sides	P6 — Class 6 (ISO 492:2023)	CN (Group N) — Normal internal clearance	JN — Steel sheet metal	Not recorded	GA13 — Ball bearing and insert bearing grease
FAG 6311-C-2HRS-C3	2HRS — Contact seal on both sides	P6 — Class 6 (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	JN — Steel sheet metal	Not recorded	GA13 — Ball bearing and insert bearing grease
FAG 6311-C-2HRS-C4	2HRS — Contact seal on both sides	P6 — Class 6 (ISO 492:2023)	C4 (Group 4) — Internal clearance larger than C3	JN — Steel sheet metal	Not recorded	GA13 — Ball bearing and insert bearing grease
FAG 6311-C-2HRS-L138-C3	2HRS — Contact seal on both sides	P6 — Class 6 (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	JN — Steel sheet metal	Not recorded	L138 — Grease (L138/customer specific)
FAG 6311-C-2HRS-L237-C3	2HRS — Contact seal on both sides	P6 — Class 6 (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	JN — Steel sheet metal	Not recorded	L237 — Grease (L237/customer specific)
FAG 6311-C-2HRS-L237-C4	2HRS — Contact seal on both sides	P6 — Class 6 (ISO 492:2023)	C4 (Group 4) — Internal clearance larger than C3	JN — Steel sheet metal	Not recorded	L237 — Grease (L237/customer specific)
FAG 6311-C-2Z	2Z — Non-contact shield on both sides	P6 — Class 6 (ISO 492:2023)	CN (Group N) — Normal internal clearance	JN — Steel sheet metal	Not recorded	GA13 — Ball bearing and insert bearing grease
FAG 6311-C-2Z-C3	2Z — Non-contact shield on both sides	P6 — Class 6 (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	JN — Steel sheet metal	Not recorded	GA13 — Ball bearing and insert bearing grease
FAG 6311-C-2Z-L100-C3	2Z — Non-contact shield on both sides	P6 — Class 6 (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	JN — Steel sheet metal	Not recorded	L100 — Grease (L100/customer specific)
FAG 6311-C-2Z-L237-C4	2Z — Non-contact shield on both sides	P6 — Class 6 (ISO 492:2023)	C4 (Group 4) — Internal clearance larger than C3	JN — Steel sheet metal	Not recorded	L237 — Grease (L237/customer specific)
FAG 6311-C3	Without — Not sealed	PN — Normal (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
FAG 6311-C4	Without — Not sealed	PN — Normal (ISO 492:2023)	C4 (Group 4) — Internal clearance larger than C3	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
FAG 6311-C-C3	Without — Not sealed	P6 — Class 6 (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
FAG 6311-C-C4	Without — Not sealed	P6 — Class 6 (ISO 492:2023)	C4 (Group 4) — Internal clearance larger than C3	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
FAG 6311-C-HRS	HRS — Contact seal on one side	P6 — Class 6 (ISO 492:2023)	CN (Group N) — Normal internal clearance	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
FAG 6311-C-HRS-C3	HRS — Contact seal on one side	P6 — Class 6 (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
FAG 6311-C-M	Without — Not sealed	P6 — Class 6 (ISO 492:2023)	CN (Group N) — Normal internal clearance	M — Solid brass cage, rolling element guided	Not recorded	Without — Bearing not greased
FAG 6311-C-M-C3	Without — Not sealed	P6 — Class 6 (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	M — Solid brass cage, rolling element guided	Not recorded	Without — Bearing not greased
FAG 6311-C-M-C4	Without — Not sealed	P6 — Class 6 (ISO 492:2023)	C4 (Group 4) — Internal clearance larger than C3	M — Solid brass cage, rolling element guided	Not recorded	Without — Bearing not greased
FAG 6311-C-N	Without — Not sealed	P6 — Class 6 (ISO 492:2023)	CN (Group N) — Normal internal clearance	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
FAG 6311-C-N-C3	Without — Not sealed	P6 — Class 6 (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
FAG 6311-C-Z	Z — Non-contact shield on one Side	P6 — Class 6 (ISO 492:2023)	CN (Group N) — Normal internal clearance	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
FAG 6311-C-Z-C3	Z — Non-contact shield on one Side	P6 — Class 6 (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
FAG 6311-C-Z-N	Z — Non-contact shield on one Side	P6 — Class 6 (ISO 492:2023)	CN (Group N) — Normal internal clearance	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
FAG 6311-H-2RSR-SN-C3>N	2RSR — Contact seal on both sides	PN — Normal (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	JN — Steel sheet metal	Not recorded	Lubricating grease
FAG 6311-H-2RSR-SN>N	2RSR — Contact seal on both sides	PN — Normal (ISO 492:2023)	CN (Group N) — Normal internal clearance	JN — Steel sheet metal	Not recorded	Lubricating grease
FAG 6311-H-2Z-SN-C3>N	2Z — Non-contact shield on both sides	PN — Normal (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	JN — Steel sheet metal	Not recorded	Lubricating grease
FAG 6311-H-2Z-SN>N	2Z — Non-contact shield on both sides	PN — Normal (ISO 492:2023)	CN (Group N) — Normal internal clearance	JN — Steel sheet metal	Not recorded	Lubricating grease
FAG 6311-H-SN-C3>N	Without — Not sealed	PN — Normal (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
FAG 6311-H-SN>N	Without — Not sealed	PN — Normal (ISO 492:2023)	CN (Group N) — Normal internal clearance	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
FAG 6311-J20AA	Without — Not sealed	PN — Normal (ISO 492:2023)	CN (Group N) — Normal internal clearance	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
FAG 6311-J20AA-C3	Without — Not sealed	PN — Normal (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
FAG 6311-M	Without — Not sealed	PN — Normal (ISO 492:2023)	CN (Group N) — Normal internal clearance	M — Solid brass cage, rolling element guided	Not recorded	Without — Bearing not greased
FAG 6311-M-C3	Without — Not sealed	PN — Normal (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	M — Solid brass cage, rolling element guided	Not recorded	Without — Bearing not greased
FAG 6311-M-J20AA	Without — Not sealed	PN — Normal (ISO 492:2023)	CN (Group N) — Normal internal clearance	M — Solid brass cage, rolling element guided	Not recorded	Without — Bearing not greased
FAG 6311-M-J20AA-C3	Without — Not sealed	PN — Normal (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	M — Solid brass cage, rolling element guided	Not recorded	Without — Bearing not greased
FAG 6311-M-J20AA-C4	Without — Not sealed	PN — Normal (ISO 492:2023)	C4 (Group 4) — Internal clearance larger than C3	M — Solid brass cage, rolling element guided	Not recorded	Without — Bearing not greased
FAG 6311-M-J20GA-C3	Without — Not sealed	PN — Normal (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	M — Solid brass cage, rolling element guided	Not recorded	Without — Bearing not greased
FAG 6311-N	Without — Not sealed	PN — Normal (ISO 492:2023)	CN (Group N) — Normal internal clearance	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
FAG 6311-N-C3	Without — Not sealed	PN — Normal (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
FAG 6311-RSR	RSR — Contact seal on one side	PN — Normal (ISO 492:2023)	CN (Group N) — Normal internal clearance	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
FAG 6311-Z	Z — Non-contact shield on one Side	PN — Normal (ISO 492:2023)	CN (Group N) — Normal internal clearance	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
FAG 6311-Z-C3	Z — Non-contact shield on one Side	PN — Normal (ISO 492:2023)	C3 (Group 3) — Internal clearance larger than CN	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
FAG 6311-Z-C4	Z — Non-contact shield on one Side	PN — Normal (ISO 492:2023)	C4 (Group 4) — Internal clearance larger than C3	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
FAG 6311-Z-N	Z — Non-contact shield on one Side	PN — Normal (ISO 492:2023)	CN (Group N) — Normal internal clearance	JN — Steel sheet metal	Not recorded	Without — Bearing not greased
TIMKEN 6311-2RS	Sealed	Not recorded	Not recorded	Steel cage	Not recorded	Not recorded
TIMKEN 6311-2RS-C3	Sealed	Not recorded	Not recorded	Steel cage	Not recorded	Not recorded
TIMKEN 6311-2RS-C4	Sealed	Not recorded	Not recorded	Steel cage	Not recorded	Not recorded
TIMKEN 6311-2RS/VSL609	Sealed	Not recorded	Not recorded	Steel cage	Not recorded	Not recorded
TIMKEN 6311-2RZ	Sealed	Not recorded	Not recorded	Steel cage	Not recorded	Not recorded
TIMKEN 6311-2RZ-C3	Sealed	Not recorded	Not recorded	Steel cage	Not recorded	Not recorded
TIMKEN 6311-2RZ-NR	Sealed	Not recorded	Not recorded	Steel cage	Not recorded	Not recorded
TIMKEN 6311-C3	Open	Not recorded	Not recorded	Steel cage	Not recorded	Not recorded
TIMKEN 6311M-C3	Open	Not recorded	Not recorded	Brass cage	Not recorded	Not recorded
TIMKEN 6311-NR	Open	Not recorded	Not recorded	Steel cage	Not recorded	Not recorded
TIMKEN 6311-NR-C3	Open	Not recorded	Not recorded	Steel cage	Not recorded	Not recorded
TIMKEN 6311-RS	Sealed	Not recorded	Not recorded	Steel cage	Not recorded	Not recorded
TIMKEN 6311-RS-C3	Sealed	Not recorded	Not recorded	Steel cage	Not recorded	Not recorded
TIMKEN 6311-Z	Shielded	Not recorded	Not recorded	Steel cage	Not recorded	Not recorded
TIMKEN 6311-Z-C3	Shielded	Not recorded	Not recorded	Steel cage	Not recorded	Not recorded
TIMKEN 6311-Z-NR	Shielded	Not recorded	Not recorded	Steel cage	Not recorded	Not recorded
TIMKEN 6311-Z-NR-C3	Shielded	Not recorded	Not recorded	Steel cage	Not recorded	Not recorded
TIMKEN 6311-ZZ	Shielded	Not recorded	Not recorded	Steel cage	Not recorded	Not recorded
TIMKEN 6311-ZZ-C3	Shielded	Not recorded	Not recorded	Steel cage	Not recorded	Not recorded
NSK 6311DDU	Contact rubber seals on both sides	Not recorded	Not recorded	Not recorded	Not recorded	Not recorded
NSK 6311VV	Non-contact rubber seals on both sides	Not recorded	Not recorded	Not recorded	Not recorded	Not recorded
NSK 6311ZZ	Metal shields on both sides	Not recorded	Not recorded	Not recorded	Not recorded	Not recorded
KOYO 6311 2RS	Contact sealed	Not recorded	Not recorded	Not recorded	Not recorded	Not recorded
KOYO 6311 2RU	Non-contact sealed	Not recorded	Not recorded	Not recorded	Not recorded	Not recorded
KOYO 6311NR	Not recorded	Not recorded	Not recorded	Not recorded	Not recorded	Not recorded
KOYO 6311 ZZ	Shielded ZZ	Not recorded	Not recorded	Not recorded	Not recorded	Not recorded

How to compare these values

Use the displayed dimension names and original symbols. Housing length L, height H2 and flange width are not bearing outside diameter D. A catalogue width with an unverified symbol must not be assumed to be inner-ring width B or assembly width T. Open the product record for mounting dimensions and geometry.
Inch values are calculated from the recorded millimetres using 25.4 mm per inch, rounded to six decimal places. They do not change a metric bearing into an inch-series bearing. Gram values are converted from the recorded mass in kilograms.
C and C0 describe different rating conditions. They are not a single safe working-load limit and cannot replace an application load calculation.
Reference and limiting speeds are separate catalogue values. The source grease/oil context is shown where recorded. Lubricant, seals, loads, fit, clearance and cooling affect the usable operating speed.
A common base number does not prove equivalent seals, clearance, precision, material or interchangeability. Open the full designation for these fields.

View full technical record →SKF

6311-2RS1/C4

Deep groove ball bearing with seals or shields

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Nominal dimensions are not shaft-fit tolerances. Different variants can add grooves, flanges, wider rings or assembly components. When the table has different dimensions, the complete designation—not the shared prefix—controls.

Measurement guide →Cross-reference checks →

Reference basis & data limits

Manufacturer terminology is retained in the product records. Technical reference basis: JTEKT Basic Bearing Knowledge (boundary dimensions, tolerance classes and lubrication); NSK Bearing ABCs (lubrication, designations and clearance); NTN technical FAQs (closure codes and component interchange); SKF rolling-bearing selection and maintenance references.

Selection workflows and catalogue grouping are BearingScope editorial aids. Verify the current drawing and application requirements before using a candidate. Missing database information is not converted into an assumed match.

Find by measured dimensions

6311 dimensions and recorded technical data

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Bearing and component measurements

Bearing and component measurements

Bearing and component measurements

Mounting limits and abutments

Bearing and component measurements

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Bearing and component measurements

Mounting limits and abutments

Bearing and component measurements

Mounting limits and abutments

Bearing and component measurements

Bearing and component measurements

Bearing and component measurements

Bearing and component measurements

Mounting limits and abutments

Bearing and component measurements

Mounting limits and abutments

Bearing and component measurements

Mounting limits and abutments

Bearing and component measurements

Mounting limits and abutments

Catalogue parameters for 6311

Dimensions

Performance

Properties

Logistics

Engineering — Dimensions

Engineering — Abutment dimensions

Engineering — Calculation data

Engineering — Tolerances of run-out

Main Dimensions & Performance Data

Mounting dimensions

Dimensions

Temperature range

Calculation factors

Product characteristics

Capabilities & suitability

Technical Data

How to compare these values

Related prefix matches — other model numbers may appear

6311

6311

6311

6311

6311

6311

6311-2RS

6311 2RS

6311-2RS1

6311-2RS1/C3

6311-2RS1/C3GJN

6311-2RS1/C4

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Reference basis & data limits

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