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2311 bearing dimensions & suffix variants

Look up recorded dimensions for designations beginning with 2311. 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.

For tapered assemblies use total width T; for units or flanged bearings also check the mounting drawing.

Exact model evidence

2311 dimensions and recorded technical data

The recorded 2311 base designation measures 55×120×43 mm (inside diameter d × outside diameter D × width B). This answer uses unsuffixed records from SKF, NSK, KOYO. 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. 16 recorded variants are listed. A dash means the value is missing, not zero.

Brand / full designationNamed dimensions (mm / in)Dynamic C (kN)Static C0 (kN)Reference speed (rpm)Limiting speed (rpm)Mass (kg / g)
SKF2311Self-aligning ball bearing
Bore diameter (d)
55 mm
2.165354 in
Outside diameter (D)
120 mm
4.724409 in
Width (B)
43 mm
1.692913 in
76.1 kN24 kN11000 rpm7500 rpm2.09 kg2090 g
NSK2311Self-aligning ball bearing
Bore diameter (d)
55 mm
2.165354 in
Outside diameter (D)
120 mm
4.724409 in
Bearing width (B)
43 mm
1.692913 in
84 kN24 kN——2.12 kg2120 g
KOYO2311Self-aligning ball bearing
Bore diameter (d)
55 mm
2.165354 in
Outside diameter (D)
120 mm
4.724409 in
Width (B)
43 mm
1.692913 in
94.2 kN23.8 kN—4600 rpmLimiting Speeds(Grease Lub.): 4600 min-1Limiting Speeds(Oil Lub.): 6400 min-12.1 kg2100 g
SKF2311/C3Self-aligning ball bearing
Recorded bore (d)
55 mm
2.165354 in
Recorded outside dimension (D)
120 mm
4.724409 in
Catalogue width (symbol unverified)
43 mm
1.692913 in
76.1 kN24 kN11000 rpm7500 rpm2.1 kg2100 g
SKF2311 KSelf-aligning ball bearing with tapered bore
Bore diameter (d)
55 mm
2.165354 in
Outside diameter (D)
120 mm
4.724409 in
Width (B)
43 mm
1.692913 in
76.1 kN24 kN11000 rpm7500 rpm2.04 kg2040 g
SKF2311 K/C3Self-aligning ball bearing with tapered bore
Recorded bore (d)
55 mm
2.165354 in
Recorded outside dimension (D)
120 mm
4.724409 in
Catalogue width (symbol unverified)
43 mm
1.692913 in
76.1 kN24 kN11000 rpm7500 rpm2.04 kg2040 g
SKF2311 KMSelf-aligning ball bearing with tapered bore
Bore diameter (d)
55 mm
2.165354 in
Outside diameter (D)
120 mm
4.724409 in
Width (B)
43 mm
1.692913 in
76.1 kN24 kN11000 rpm7500 rpm2.24 kg2240 g
SKF2311 MSelf-aligning ball bearing
Bore diameter (d)
55 mm
2.165354 in
Outside diameter (D)
120 mm
4.724409 in
Width (B)
43 mm
1.692913 in
76.1 kN24 kN11000 rpm7500 rpm2.29 kg2290 g
SKF2311 M/C3Self-aligning ball bearing
Recorded bore (d)
55 mm
2.165354 in
Recorded outside dimension (D)
120 mm
4.724409 in
Catalogue width (symbol unverified)
43 mm
1.692913 in
76.1 kN24 kN11000 rpm—2.29 kg2290 g
FAG2311-2RS-TVHSelf-aligning ball bearing
Bore diameter (d)
55 mm
2.165354 in
Outside diameter (D)
120 mm
4.724409 in
Width (B)
43 mm
1.692913 in
52 kN17.9 kN—3750 rpm1.886 kg1886 g
FAG2311-2RS-TVH-C3Self-aligning ball bearing
Bore diameter (d)
55 mm
2.165354 in
Outside diameter (D)
120 mm
4.724409 in
Width (B)
43 mm
1.692913 in
52 kN17.9 kN—3750 rpm2.125 kg2125 g
FAG2311-K-2RS-TVH-C3Self-aligning ball bearing
Bore diameter (d)
55 mm
2.165354 in
Outside diameter (D)
120 mm
4.724409 in
Width (B)
43 mm
1.692913 in
52 kN17.9 kN—3750 rpm2.136 kg2136 g
FAG2311-K-TVH-C3Self-aligning ball bearing
Bore diameter (d)
55 mm
2.165354 in
Outside diameter (D)
120 mm
4.724409 in
Width (B)
43 mm
1.692913 in
77 kN24 kN7100 rpm5700 rpm2.05 kg2050 g
FAG2311-TVHSelf-aligning ball bearing
Bore diameter (d)
55 mm
2.165354 in
Outside diameter (D)
120 mm
4.724409 in
Width (B)
43 mm
1.692913 in
77 kN24 kN7100 rpm5700 rpm2.125 kg2125 g
FAG2311-TVH-C3Self-aligning ball bearing
Bore diameter (d)
55 mm
2.165354 in
Outside diameter (D)
120 mm
4.724409 in
Width (B)
43 mm
1.692913 in
77 kN24 kN7100 rpm5700 rpm2.125 kg2125 g
NSK2311KSelf-aligning ball bearing
Nominal bore diameter (1:12 taper) (d)
55 mm
2.165354 in
Outside diameter (D)
120 mm
4.724409 in
Bearing width (B)
43 mm
1.692913 in
84 kN24 kN———
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 / designationClosureOriginal precisionClearanceCageMaterialLubricant
SKF 2311WithoutNot recordedCNSheet metalBearing steelNone
NSK 2311Not recordedNot recordedNot recordedNot recordedNot recordedNot recorded
KOYO 2311OpenNot recordedNot recordedNot recordedNot recordedNot recorded
SKF 2311/C3WithoutNot recordedC3Sheet metalBearing steelNone
SKF 2311 KWithoutNot recordedCNSheet metalBearing steelNone
SKF 2311 K/C3WithoutNot recordedC3Sheet metalBearing steelNone
SKF 2311 KMWithoutNot recordedCNMachined brassBearing steelNone
SKF 2311 MWithoutNot recordedCNMachined brassBearing steelNone
SKF 2311 M/C3WithoutNot recordedC3Machined brassBearing steelNone
FAG 2311-2RS-TVH2RS — Contact seal on both sidesPN — Normal (ISO 492:2023)CN (Group N) — Normal internal clearanceTVH — Solid cage made of glass-fiber reinforced polyamide PA66Not recordedGA13 — Ball bearing and insert bearing grease
FAG 2311-2RS-TVH-C32RS — Contact seal on both sidesPN — Normal (ISO 492:2023)C3 (Group 3) — Internal clearance larger than CNTVH — Solid cage made of glass-fiber reinforced polyamide PA66Not recordedGA13 — Ball bearing and insert bearing grease
FAG 2311-K-2RS-TVH-C32RS — Contact seal on both sidesPN — Normal (ISO 492:2023)C3 (Group 3) — Internal clearance larger than CNTVH — Solid cage made of glass-fiber reinforced polyamide PA66Not recordedGA13 — Ball bearing and insert bearing grease
FAG 2311-K-TVH-C3Without — Not sealedPN — Normal (ISO 492:2023)C3 (Group 3) — Internal clearance larger than CNTVH — Solid cage made of glass-fiber reinforced polyamide PA66Not recordedWithout — Bearing not greased
FAG 2311-TVHWithout — Not sealedPN — Normal (ISO 492:2023)CN (Group N) — Normal internal clearanceTVH — Solid cage made of glass-fiber reinforced polyamide PA66Not recordedWithout — Bearing not greased
FAG 2311-TVH-C3Without — Not sealedPN — Normal (ISO 492:2023)C3 (Group 3) — Internal clearance larger than CNTVH — Solid cage made of glass-fiber reinforced polyamide PA66Not recordedWithout — Bearing not greased
NSK 2311KNot recordedNot recordedNot recordedNot recordedNot recordedNot 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.
Check load calculations →Estimate rating life →Decode the complete marking →Check replacement evidence →

Related prefix matches — other model numbers may appear

These discovery results can contain a longer number or a different component. They are not specifications for the requested exact model. Open the complete product to inspect its original geometry.

KOYO

2311

Self-aligning ball bearing

View full technical record →SKF

2311

Self-aligning ball bearing

View full technical record →NSK

2311

Self-aligning ball bearing

View full technical record →FAG

231/1000-B-K-MB

Spherical Roller Bearing

View full technical record →FAG

231/1000-B-MB

Spherical Roller Bearing

View full technical record →SKF

231/1000 CAKF/W33

Spherical roller bearing with tapered bore and relubrication features

View full technical record →FAG

2311-2RS-TVH

Self-aligning ball bearing

View full technical record →FAG

2311-2RS-TVH-C3

Self-aligning ball bearing

View full technical record →SKF

2311/C3

Self-aligning ball bearing

View full technical record →SKF

2311 K

Self-aligning ball bearing with tapered bore

View full technical record →NSK

2311K

Self-aligning ball bearing

View full technical record →FAG

2311-K-2RS-TVH-C3

Self-aligning ball bearing

View full technical record →
Filter all 19 prefix results →

Check the drawing before substituting

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.

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