6303 bearing dimensions & suffix variants
Look up recorded dimensions for designations beginning with 6303. The table retains complete manufacturer designations so special suffixes and different dimensional variants remain visible.
On this page6 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.
6303 — source-labelled NSK dimensions
Nominal dimensions from the NSK Bearing Replacement Guide, reference BRG/C/E/11.15. This is a historical catalogue reference, checked 2026-10-03; it is not a current product-availability list or an interchange approval. Each row preserves its complete printed designation.
| Complete NSK designation | Bore d | Outside D | Width B | Source page / boundary |
|---|---|---|---|---|
| NSK catalogue record6303 | 17 mm | 47 mm | 14 mm | Printed p. 34Nominal envelope only; complete execution as marked |
| NSK catalogue record6303DDU | 17 mm | 47 mm | 14 mm | Printed p. 34Nominal envelope only; complete execution as marked |
| NSK catalogue record6303DU | 17 mm | 47 mm | 14 mm | Printed p. 34Nominal envelope only; complete execution as marked |
| NSK catalogue record6303NR | 17 mm | 47 mm | 14 mm | Printed p. 34Nominal envelope only; complete execution as marked |
| NSK catalogue record6303VV | 17 mm | 47 mm | 14 mm | Printed p. 34Nominal envelope only; complete execution as marked |
| NSK catalogue record6303Z | 17 mm | 47 mm | 14 mm | Printed p. 34Nominal envelope only; complete execution as marked |
| NSK catalogue record6303ZNR | 17 mm | 47 mm | 14 mm | Printed p. 34Nominal envelope only; complete execution as marked |
| NSK catalogue record6303ZZ | 17 mm | 47 mm | 14 mm | Printed p. 34Nominal envelope only; complete execution as marked |
| NSK catalogue record6303ZZNR | 17 mm | 47 mm | 14 mm | Printed p. 34Nominal envelope only; complete execution as marked |
Read d×D×B together. Equal outside dimensions do not prove equal seals, internal clearance, precision, load ratings, lubricant or speed limits. Those properties are not supplied by this dimensional table. A DU, DDU, Z, ZZ, VV, DD or other marking is kept as printed; missing suffix records are not created from a base model.
6303 dimensions and recorded technical data
The recorded 6303 base designation measures 17×47×14 mm (inside diameter d × outside diameter D × width B). This answer uses unsuffixed records from SKF, NSK, KOYO, NACHI, 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. 89 recorded variants are listed. A dash means the value is missing, not zero.
Read the original dimensions for 6303
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 6303-Z — 13 dimension fields
Deep groove ball bearing with seals or shields. 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 | 17 mm |
| Deviation limits of mid-range bore diameter | t Δdmp | -0.007 to 0 mm |
| Outside diameter | D | 47 mm |
| Deviation limits of mid-range outside diameter | t ΔDmp | -0.009 to 0 mm |
| Width | B | 14 mm |
| Deviation limits of ring width | t ΔBs | -0.06 to 0 mm |
| Shoulder diameter | d 1 | ≈ 26.52 mm |
| Recess diameter | D 2 | ≈ 39.58 mm |
| Chamfer dimension | r 1,2 | min. 1 mm |
Mounting limits and abutments
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Diameter of shaft abutment | d a | min. 22.6 mm |
| Diameter of shaft abutment | d a | max. 26.4 mm |
| Diameter of housing abutment | D a | max. 41.4 mm |
| Radius of shaft or housing fillet | r a | max. 1 mm |
SKF 6303/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 | 17.0 mm |
| Outside diameter | Not supplied separately | 47.0 mm |
| Width | Not supplied separately | 14.0 mm |
SKF 6303 — 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 | 17 mm |
| Deviation limits of mid-range bore diameter | t Δdmp | -0.007 to 0 mm |
| Outside diameter | D | 47 mm |
| Deviation limits of mid-range outside diameter | t ΔDmp | -0.009 to 0 mm |
| Width | B | 14 mm |
| Deviation limits of ring width | t ΔBs | -0.06 to 0 mm |
| Shoulder diameter | d 1 | ≈ 26.52 mm |
| Recess diameter | D 2 | ≈ 39.58 mm |
| Chamfer dimension | r 1,2 | min. 1 mm |
Mounting limits and abutments
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Diameter of shaft abutment | d a | min. 22.6 mm |
| Diameter of housing abutment | D a | max. 41.4 mm |
| Radius of shaft or housing fillet | r a | max. 1 mm |
KOYO 6303 — 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 | 17 mm |
| Outside diameter | D | 47 mm |
| Width | B | 14 mm |
KOYO 6303 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 | 17 mm |
| Outside diameter | D | 47 mm |
| Width | B | 14 mm |
KOYO 6303 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 | 17 mm |
| Outside diameter | D | 47 mm |
| Width | B | 14 mm |
TIMKEN 6303-RS — 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 | 17 mm |
| O.D. (D) | D | 47 mm / 1.850 in |
| Width (B) | B | 14 mm / 0.551 in |
Mounting limits and abutments
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Max Shaft Fillet Radius | Not supplied separately | 1 mm / 0.039 in |
TIMKEN 6303-Z — 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 | 17 mm |
| O.D. (D) | D | 47 mm / 1.850 in |
| Width (B) | B | 14 mm / 0.551 in |
Mounting limits and abutments
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Max Shaft Fillet Radius | Not supplied separately | 1 mm / 0.039 in |
TIMKEN 6303-C3 — 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 | 17 mm |
| O.D. (D) | D | 47 mm / 1.850 in |
| Width (B) | B | 14 mm / 0.551 in |
Mounting limits and abutments
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Max Shaft Fillet Radius | Not supplied separately | 1 mm / 0.039 in |
TIMKEN 6303-2RS — 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 | 17 mm |
| O.D. (D) | D | 47 mm / 1.850 in |
| Width (B) | B | 14 mm / 0.551 in |
Mounting limits and abutments
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Max Shaft Fillet Radius | Not supplied separately | 1 mm / 0.039 in |
TIMKEN 6303-ZZ — 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 | 17 mm |
| O.D. (D) | D | 47 mm / 1.850 in |
| Width (B) | B | 14 mm / 0.551 in |
Mounting limits and abutments
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Max Shaft Fillet Radius | Not supplied separately | 1 mm / 0.039 in |
TIMKEN 6303 — 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 | 17 mm |
| O.D. (D) | D | 47 mm / 1.850 in |
| Width (B) | B | 14 mm / 0.551 in |
Mounting limits and abutments
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Max Shaft Fillet Radius | Not supplied separately | 1 mm / 0.039 in |
Catalogue parameters for 6303
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 6303 — 49 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 | 17.0 mm |
| Outside diameter | Not separately recorded | 47.0 mm |
| Width | Not separately recorded | 14.0 mm |
Performance
| Parameter | Source symbol | Recorded value |
|---|---|---|
| Basic dynamic load rating | Not separately recorded | 14.3 kN |
| Basic static load rating | Not separately recorded | 6.55 kN |
| Reference speed | Not separately recorded | 34000.0 r/min |
| Limiting speed | Not separately recorded | 22000.0 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 | 0.41 kg CO 2 e |
Logistics
| Parameter | Source symbol | Recorded value |
|---|---|---|
| Product net weight | Not separately recorded | 0.11 kg |
Engineering — Dimensions
| Parameter | Source symbol | Recorded value |
|---|---|---|
| Bore diameter | d | 17 mm |
| Deviation limits of mid-range bore diameter | t Δdmp | -0.007 to 0 mm |
| Outside diameter | D | 47 mm |
| Deviation limits of mid-range outside diameter | t ΔDmp | -0.009 to 0 mm |
| Width | B | 14 mm |
| Deviation limits of ring width | t ΔBs | -0.06 to 0 mm |
| Shoulder diameter | d 1 | ≈ 26.52 mm |
| Recess diameter | D 2 | ≈ 39.58 mm |
| Chamfer dimension | r 1,2 | min. 1 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. 22.6 mm |
| Diameter of housing abutment | D a | max. 41.4 mm |
| Radius of shaft or housing fillet | r a | max. 1 mm |
Engineering — Calculation data
| Parameter | Source symbol | Recorded value |
|---|---|---|
| SKF performance class | Not separately recorded | SKF Explorer |
| Basic dynamic load rating | C | 14.3 kN |
| Basic static load rating | C 0 | 6.55 kN |
| Fatigue load limit | P u | 0.275 kN |
| Reference speed | Not separately recorded | 34000 r/min |
| Limiting speed | Not separately recorded | 22000 r/min |
| Minimum load factor | k r | 0.03 |
| Calculation factor | f 0 | 12 |
Engineering — Tolerances of run-out
| Parameter | Source symbol | Recorded value |
|---|---|---|
| Range of section height at inner ring of assembled bearing | t Kia | 4 µm |
| Maximum run-out of inner ring side face to the bore | t Sd | 7 µm |
| Maximum axial run-out of inner ring of assembled bearing | t Sia | 7 µm |
| Range of section height at outer ring of assembled bearing | t Kea | 7 µm |
| Perpendicularity of outer ring outside surface | t SD | 4 µm |
| Maximum axial run-out of outer ring of assembled bearing | t Sea | 8 µm |
| ISO tolerance class for geometrical tolerances | Not separately recorded | P5 |
KOYO 6303 — 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 | 17 mm |
| D | Not separately recorded | 47 mm |
| B | Not separately recorded | 14 mm |
| R(Min.) | Not separately recorded | 1 mm |
| Basic Load Ratings : Cr | Not separately recorded | 17.0 kN |
| Basic Load Ratings : C0R | Not separately recorded | 6.65 kN |
| Fatigue Load Limit : Cu | Not separately recorded | 0.550 kN |
| Factor : F0 | Not separately recorded | 12.4 |
| Limiting Speeds(Grease Lub.) | Not separately recorded | 15000 min-1 |
| Limiting Speeds(Oil Lub.) | Not separately recorded | 18000 min-1 |
| Da(Min.) | Not separately recorded | 22 mm |
| Da(Max.) | Not separately recorded | 42 mm |
| Ra(Max.) | Not separately recorded | 1 mm |
| Mass(Refer.) | Not separately recorded | 0.115 kg |
No recorded variant matches these filters. Clear a filter to see other records; no substitute has been inferred.
| Brand / full designation | Named dimensions (mm / in) | Dynamic C (kN) | Static C0 (kN) | Reference speed (rpm) | Limiting speed (rpm) | Mass (kg / g) |
|---|---|---|---|---|---|---|
| SKF6303Deep groove ball bearing |
| 14.3 kN | 6.55 kN | 34000 rpm | 22000 rpm | 0.11 kg110 g |
| TIMKEN6303Deep groove ball bearing |
| 13.6 kN | 6.58 kN | — | — | 0.12 kg120 g |
| NSK6303Deep groove ball bearing |
| 15 kN | 6.65 kN | — | — | 0.113 kg113 g |
| KOYO6303Deep groove ball bearing |
| 17 kN | 6.65 kN | — | 15000 rpmLimiting Speeds(Grease Lub.): 15000 min-1Limiting Speeds(Oil Lub.): 18000 min-1 | 0.115 kg115 g |
| NACHI6303Deep groove ball bearing |
| 17.1 kN | 6.55 kN | — | — | 0.115 kg115 g |
| NTN6303Deep groove ball bearing |
| 15 kN | 6.55 kN | — | — | 0.115 kg115 g |
| SKF6303-2RSHDeep groove ball bearing with seals |
| 14.3 kN | 6.55 kN | — | 11000 rpm | 0.112 kg112 g |
| SKF6303-2RSH/C3Deep groove ball bearing with seals |
| 14.3 kN | 6.55 kN | 34000 rpm | 11000 rpm | 0.112 kg112 g |
| SKF6303-2RSH/C3GJNDeep groove ball bearing with seals |
| 14.3 kN | 6.55 kN | — | 11000 rpm | 0.115 kg115 g |
| SKF6303-2RSH/GJNDeep groove ball bearing |
| — | — | — | — | 0.112 kg112 g |
| SKF6303-2RSH/VA947SKF Food line deep groove ball bearing with seals |
| 14.3 kN | 6.55 kN | — | 11000 rpm | 0.116 kg116 g |
| SKF6303 2RSJEMDeep groove ball bearing |
| 14.3 kN | 6.55 kN | — | 11000 rpm | 0.115 kg115 g |
| SKF6303-2ZDeep groove ball bearing with seals or shields |
| 14.3 kN | 6.55 kN | 34000 rpm | 17000 rpm | 0.115 kg115 g |
| SKF6303-2Z/C3Deep groove ball bearing with seals or shields |
| 14.3 kN | 6.55 kN | 34000 rpm | 17000 rpm | 0.112 kg112 g |
| SKF6303-2Z/C3GJNDeep groove ball bearing with seals or shields |
| 14.3 kN | 6.55 kN | 34000 rpm | 17000 rpm | 0.112 kg112 g |
| SKF6303-2Z/GJNDeep groove ball bearing |
| — | — | — | — | 0.112 kg112 g |
| SKF6303 2ZJEMDeep groove ball bearing |
| 14.3 kN | 6.55 kN | 34000 rpm | 17000 rpm | 0.112 kg112 g |
| SKF6303-2ZNRDeep groove ball bearing with snap ring and integral sealing |
| 14.3 kN | 6.55 kN | 34000 rpm | 17000 rpm | 0.118 kg118 g |
| SKF6303-2Z/VA228Deep groove ball bearing for high temperature applications with shields on both sides |
| — | 6.55 kN | — | 280 rpm | 0.112 kg112 g |
| SKF6303-2Z/WTDeep groove ball bearing |
| — | — | — | — | 0.112 kg112 g |
| SKF6303/C3Deep groove ball bearing |
| 14.3 kN | 6.55 kN | 34000 rpm | 22000 rpm | 0.108 kg108 g |
| SKF6303/C4Deep groove ball bearing |
| — | — | — | — | 0.108 kg108 g |
| SKF6303 ETN9/C3Deep groove ball bearing |
| 15.6 kN | 7.5 kN | 32000 rpm | 20000 rpm | 0.104 kg104 g |
| SKF6303 JEMDeep groove ball bearing |
| 14.3 kN | 6.55 kN | 34000 rpm | 22000 rpm | 0.108 kg108 g |
| SKF6303 NRJEMDeep groove ball bearing |
| 14.3 kN | 6.55 kN | 34000 rpm | 22000 rpm | 0.111 kg111 g |
| SKF6303-RSHDeep groove ball bearing with seals |
| 14.3 kN | 6.55 kN | — | 11000 rpm | 0.11 kg110 g |
| SKF6303 TN9/C3Deep groove ball bearing |
| 14.3 kN | 6.55 kN | 34000 rpm | 22000 rpm | 0.106 kg106 g |
| SKF6303/VA201Deep groove ball bearing for high temperature applications |
| — | 6.55 kN | — | 140 rpm | 0.11 kg110 g |
| SKF6303-ZDeep groove ball bearing with seals or shields |
| 14.3 kN | 6.55 kN | 34000 rpm | 22000 rpm | 0.112 kg112 g |
| SKF6303-Z/C3Deep groove ball bearing with seals or shields |
| 14.3 kN | 6.55 kN | 34000 rpm | 22000 rpm | 0.11 kg110 g |
| SKF6303 ZJEMDeep groove ball bearing |
| 14.3 kN | 6.55 kN | 34000 rpm | 22000 rpm | 0.11 kg110 g |
| FAG6303-C-2BRS>VDeep groove ball bearing |
| 15.8 kN | 6.5 kN | 17400 rpm | 20800 rpm | 0.12 kg120 g |
| FAG6303-C-2HRS-C3>VDeep groove ball bearing |
| 15.8 kN | 6.5 kN | — | 15700 rpm | 0.113 kg113 g |
| FAG6303-C-2HRS-L038-C3>VDeep groove ball bearing |
| 15.8 kN | 6.5 kN | — | 15700 rpm | 0.113 kg113 g |
| FAG6303-C-2HRS-L038>VDeep groove ball bearing |
| 15.8 kN | 6.5 kN | — | 15700 rpm | 0.12 kg120 g |
| FAG6303-C-2HRS-L138-C3>VDeep groove ball bearing |
| 15.8 kN | 6.5 kN | — | 15700 rpm | 0.114 kg114 g |
| FAG6303-C-2HRS-L138-CM>VDeep groove ball bearing |
| 15.8 kN | 6.5 kN | — | 15700 rpm | 0.113 kg113 g |
| FAG6303-C-2HRS>VDeep groove ball bearing |
| 15.8 kN | 6.5 kN | — | 15700 rpm | 0.12 kg120 g |
| FAG6303-C-2Z-C3>VDeep groove ball bearing |
| 15.8 kN | 6.5 kN | 17400 rpm | 20800 rpm | 0.11 kg110 g |
| FAG6303-C-2Z-L038-C3>VDeep groove ball bearing |
| 15.8 kN | 6.5 kN | 17400 rpm | 20800 rpm | 0.113 kg113 g |
| FAG6303-C-2Z-L038>VDeep groove ball bearing |
| 15.8 kN | 6.5 kN | 17400 rpm | 20800 rpm | 0.11 kg110 g |
| FAG6303-C-2Z-L138-C3>VDeep groove ball bearing |
| 15.8 kN | 6.5 kN | 17400 rpm | 20800 rpm | 0.113 kg113 g |
| FAG6303-C-2Z-L207-C3>VDeep groove ball bearing |
| 15.8 kN | 6.5 kN | 17400 rpm | 20800 rpm | 0.113 kg113 g |
| FAG6303-C-2Z>VDeep groove ball bearing |
| 15.8 kN | 6.5 kN | 17400 rpm | 20800 rpm | 0.12 kg120 g |
| FAG6303-C-C3>VDeep groove ball bearing |
| 15.8 kN | 6.5 kN | 17400 rpm | 24500 rpm | 0.105 kg105 g |
| FAG6303-C>VDeep groove ball bearing |
| 15.8 kN | 6.5 kN | 17400 rpm | 24500 rpm | 0.105 kg105 g |
| FAG6303-C-Z-C3>VDeep groove ball bearing |
| 15.8 kN | 6.5 kN | 17400 rpm | 24500 rpm | 0.111 kg111 g |
| FAG6303-C-Z>VDeep groove ball bearing |
| 15.8 kN | 6.5 kN | 17400 rpm | 24500 rpm | 0.111 kg111 g |
| FAG6303-H-2RSR-C3>NDeep groove ball bearing |
| 13.58 kN | 6.58 kN | — | 10000 rpm | 0.113 kg113 g |
| FAG6303-H-2RSR>NDeep groove ball bearing |
| 13.58 kN | 6.58 kN | — | 10000 rpm | 0.113 kg113 g |
| FAG6303-H-2Z-C3>NDeep groove ball bearing |
| 13.58 kN | 6.58 kN | 15500 rpm | 18700 rpm | 0.113 kg113 g |
| FAG6303-H-2Z>NDeep groove ball bearing |
| 13.58 kN | 6.58 kN | 15500 rpm | 18700 rpm | 0.113 kg113 g |
| FAG6303-H-C3>NDeep groove ball bearing |
| 13.58 kN | 6.58 kN | 15500 rpm | 22000 rpm | 0.113 kg113 g |
| FAG6303-H>NDeep groove ball bearing |
| 13.58 kN | 6.58 kN | 15500 rpm | 22000 rpm | 0.113 kg113 g |
| TIMKEN6303-2RSDeep groove ball bearing |
| 13.6 kN | 6.58 kN | — | — | 0.12 kg120 g |
| TIMKEN6303-2RS-C3Deep groove ball bearing |
| 13.6 kN | 6.58 kN | — | — | 0.12 kg120 g |
| TIMKEN6303-2RS-NRDeep groove ball bearing |
| 13.6 kN | 6.58 kN | — | — | 0.12 kg120 g |
| TIMKEN6303-2RS/VSL609Deep groove ball bearing |
| 13.6 kN | 6.58 kN | — | — | 0.12 kg120 g |
| TIMKEN6303-2RZDeep groove ball bearing |
| 13.6 kN | 6.58 kN | — | — | 0.12 kg120 g |
| TIMKEN6303-2RZ-C3Deep groove ball bearing |
| 13.6 kN | 6.58 kN | — | — | 0.12 kg120 g |
| TIMKEN6303-2RZ-NRDeep groove ball bearing |
| 13.6 kN | 6.58 kN | — | — | 0.12 kg120 g |
| TIMKEN6303-C3Deep groove ball bearing |
| 13.6 kN | 6.58 kN | — | — | 0.12 kg120 g |
| TIMKEN6303-NRDeep groove ball bearing |
| 13.6 kN | 6.58 kN | — | — | 0.12 kg120 g |
| TIMKEN6303-NR-C3Deep groove ball bearing |
| 13.6 kN | 6.58 kN | — | — | 0.12 kg120 g |
| TIMKEN6303-RSDeep groove ball bearing |
| 13.6 kN | 6.58 kN | — | — | 0.12 kg120 g |
| TIMKEN6303-RS-C3Deep groove ball bearing |
| 13.6 kN | 6.58 kN | — | — | 0.12 kg120 g |
| TIMKEN6303/VSL609Deep groove ball bearing |
| 13.6 kN | 6.58 kN | — | — | 0.12 kg120 g |
| TIMKEN6303-ZDeep groove ball bearing |
| 13.6 kN | 6.58 kN | — | — | 0.12 kg120 g |
| TIMKEN6303-Z-C3Deep groove ball bearing |
| 13.6 kN | 6.58 kN | — | — | 0.12 kg120 g |
| TIMKEN6303-Z-NRDeep groove ball bearing |
| 13.6 kN | 6.58 kN | — | — | 0.12 kg120 g |
| TIMKEN6303-Z-NR-C3Deep groove ball bearing |
| 13.6 kN | 6.58 kN | — | — | 0.12 kg120 g |
| TIMKEN6303-ZZDeep groove ball bearing |
| 13.6 kN | 6.58 kN | — | — | 0.12 kg120 g |
| TIMKEN6303-ZZ-C3Deep groove ball bearing |
| 13.6 kN | 6.58 kN | — | — | 0.12 kg120 g |
| NSK6303DDUDeep groove ball bearing |
| 15 kN | 6.65 kN | — | — | — |
| NSK6303VVDeep groove ball bearing |
| 15 kN | 6.65 kN | — | — | — |
| NSK6303ZZDeep groove ball bearing |
| 15 kN | 6.65 kN | — | — | — |
| KOYO6303 2RDDeep groove ball bearing |
| 17 kN | 6.65 kN | — | 14000 rpmLimiting Speeds(Grease Lub.): 14000 min-1 | 0.115 kg115 g |
| KOYO6303 2RSDeep groove ball bearing |
| 17 kN | 6.65 kN | — | 10000 rpmLimiting Speeds(Grease Lub.): 10000 min-1 | 0.115 kg115 g |
| KOYO6303 2RUDeep groove ball bearing |
| 17 kN | 6.65 kN | — | 15000 rpmLimiting Speeds(Grease Lub.): 15000 min-1 | 0.115 kg115 g |
| KOYO6303NRDeep groove ball bearing |
| 17 kN | 6.65 kN | — | 15000 rpmLimiting Speeds(Grease Lub.): 15000 min-1Limiting Speeds(Oil Lub.): 18000 min-1 | 0.115 kg115 g |
| KOYO6303RDeep groove ball bearing |
| 19.6 kN | 7.6 kN | — | 15000 rpmLimiting Speeds(Grease Lub.): 15000 min-1Limiting Speeds(Oil Lub.): 18000 min-1 | 0.121 kg121 g |
| KOYO6303 ZZDeep groove ball bearing |
| 17 kN | 6.65 kN | — | 15000 rpmLimiting Speeds(Grease Lub.): 15000 min-1 | 0.115 kg115 g |
| NACHI6303-2NKE9Deep groove ball bearing |
| 17.1 kN | 6.55 kN | — | — | — |
| NACHI6303-2NSE9Deep groove ball bearing |
| 17.1 kN | 6.55 kN | — | — | — |
| NACHI6303NKE9Deep groove ball bearing |
| 17.1 kN | 6.55 kN | — | — | — |
| NACHI6303NSE9Deep groove ball bearing |
| 17.1 kN | 6.55 kN | — | — | — |
| NACHI6303ZEDeep groove ball bearing |
| 17.1 kN | 6.55 kN | — | — | — |
| NACHI6303ZZEDeep groove ball bearing |
| 17.1 kN | 6.55 kN | — | — | — |
| NTN6303LUDeep groove ball bearing |
| 15 kN | 6.55 kN | — | — | 0.115 kg115 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 6303 | Without | P6 and tighter width tolerance | CN | Sheet metal | Bearing steel | None |
| TIMKEN 6303 | Open | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| NSK 6303 | Open | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| KOYO 6303 | Open | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| NACHI 6303 | Open | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| NTN 6303 | open | Not recorded | CN | pressed steel cage | Not recorded | Not recorded |
| SKF 6303-2RSH | Seal on both sides | P6 and tighter width tolerance | CN | Sheet metal | Bearing steel | Grease |
| SKF 6303-2RSH/C3 | Seal on both sides | Not recorded | C3 | Sheet metal | Bearing steel | Grease |
| SKF 6303-2RSH/C3GJN | Seal on both sides | Not recorded | C3 | Sheet metal | Bearing steel | Grease |
| SKF 6303-2RSH/GJN | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| SKF 6303-2RSH/VA947 | Seal on both sides | Not recorded | CN | Sheet metal | Bearing steel | Food grade grease |
| SKF 6303 2RSJEM | Seal on both sides | Not recorded | C3 | Sheet metal | Bearing steel | Grease |
| SKF 6303-2Z | Shield on both sides | P6 and tighter width tolerance | CN | Sheet metal | Bearing steel | Grease |
| SKF 6303-2Z/C3 | Shield on both sides | Not recorded | C3 | Sheet metal | Bearing steel | Grease |
| SKF 6303-2Z/C3GJN | Shield on both sides | Not recorded | C3 | Sheet metal | Bearing steel | Grease |
| SKF 6303-2Z/GJN | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| SKF 6303 2ZJEM | Shield on both sides | Not recorded | C3 | Sheet metal | Bearing steel | Grease |
| SKF 6303-2ZNR | Shield on both sides | P6 and tighter width tolerance | CN | Sheet metal | Bearing steel | Grease |
| SKF 6303-2Z/VA228 | Shield on both sides | Not recorded | Multiples of C5 | Non-metallic | High temperature steel | Solid lubricant |
| SKF 6303-2Z/WT | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| SKF 6303/C3 | Without | Not recorded | C3 | Sheet metal | Bearing steel | None |
| SKF 6303/C4 | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| SKF 6303 ETN9/C3 | Without | Not recorded | C3 | Non-metallic | Bearing steel | None |
| SKF 6303 JEM | Without | Not recorded | C3 | Sheet metal | Bearing steel | None |
| SKF 6303 NRJEM | Without | Not recorded | C3 | Sheet metal | Bearing steel | None |
| SKF 6303-RSH | Seal on one side | P6 and tighter width tolerance | CN | Sheet metal | Bearing steel | None |
| SKF 6303 TN9/C3 | Without | Not recorded | C3 | Non-metallic | Bearing steel | None |
| SKF 6303/VA201 | Without | Not recorded | Multiples of C5 | Sheet metal | High temperature steel | Solid lubricant |
| SKF 6303-Z | Shield on one side | P6 and tighter width tolerance | CN | Sheet metal | Bearing steel | None |
| SKF 6303-Z/C3 | Shield on one side | Not recorded | C3 | Sheet metal | Bearing steel | None |
| SKF 6303 ZJEM | Shield on one side | Not recorded | C3 | Sheet metal | Bearing steel | None |
| FAG 6303-C-2BRS>V | 2BRS — Non-contact seal on both sides | P6 — Class 6 (ISO 492:2023) | CN (Group N) — Normal internal clearance | JN — Steel sheet metal | Not recorded | GA14 — Ball bearing grease, low noise |
| FAG 6303-C-2HRS-C3>V | 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 | GA14 — Ball bearing grease, low noise |
| FAG 6303-C-2HRS-L038-C3>V | 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 | L038 — Grease (L038/customer specific) |
| FAG 6303-C-2HRS-L038>V | 2HRS — Contact seal on both sides | P6 — Class 6 (ISO 492:2023) | CN (Group N) — Normal internal clearance | JN — Steel sheet metal | Not recorded | L038 — Grease (L038/customer specific) |
| FAG 6303-C-2HRS-L138-C3>V | 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 6303-C-2HRS-L138-CM>V | 2HRS — Contact seal on both sides | P6 — Class 6 (ISO 492:2023) | CM (Group M) — Internal clearance limited for electric motors | JN — Steel sheet metal | Not recorded | L138 — Grease (L138/customer specific) |
| FAG 6303-C-2HRS>V | 2HRS — Contact seal on both sides | P6 — Class 6 (ISO 492:2023) | CN (Group N) — Normal internal clearance | JN — Steel sheet metal | Not recorded | GA14 — Ball bearing grease, low noise |
| FAG 6303-C-2Z-C3>V | 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 | GA14 — Ball bearing grease, low noise |
| FAG 6303-C-2Z-L038-C3>V | 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 | L038 — Grease (L038/customer specific) |
| FAG 6303-C-2Z-L038>V | 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 | L038 — Grease (L038/customer specific) |
| FAG 6303-C-2Z-L138-C3>V | 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 | L138 — Grease (L138/customer specific) |
| FAG 6303-C-2Z-L207-C3>V | 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 | L207 — Low noise high-temperature grease, interchangeable with grease L069 |
| FAG 6303-C-2Z>V | 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 | GA14 — Ball bearing grease, low noise |
| FAG 6303-C-C3>V | 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 6303-C>V | 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 6303-C-Z-C3>V | 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 6303-C-Z>V | 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 6303-H-2RSR-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 6303-H-2RSR>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 6303-H-2Z-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 6303-H-2Z>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 6303-H-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 6303-H>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 |
| TIMKEN 6303-2RS | Sealed | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6303-2RS-C3 | Sealed | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6303-2RS-NR | Sealed | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6303-2RS/VSL609 | Sealed | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6303-2RZ | Sealed | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6303-2RZ-C3 | Sealed | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6303-2RZ-NR | Sealed | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6303-C3 | Open | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6303-NR | Open | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6303-NR-C3 | Open | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6303-RS | Sealed | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6303-RS-C3 | Sealed | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6303/VSL609 | Open | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6303-Z | Shielded | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6303-Z-C3 | Shielded | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6303-Z-NR | Shielded | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6303-Z-NR-C3 | Shielded | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6303-ZZ | Shielded | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 6303-ZZ-C3 | Shielded | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| NSK 6303DDU | Contact rubber seals on both sides | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| NSK 6303VV | Non-contact rubber seals on both sides | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| NSK 6303ZZ | Metal shields on both sides | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| KOYO 6303 2RD | Extremely light contact sealed | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| KOYO 6303 2RS | Contact sealed | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| KOYO 6303 2RU | Non-contact sealed | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| KOYO 6303NR | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| KOYO 6303R | Open | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| KOYO 6303 ZZ | Shielded ZZ | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| NACHI 6303-2NKE9 | Two non-contact seals | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| NACHI 6303-2NSE9 | Two contact seals | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| NACHI 6303NKE9 | One non-contact seal | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| NACHI 6303NSE9 | One contact seal | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| NACHI 6303ZE | One shield | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| NACHI 6303ZZE | Two shields | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| NTN 6303LU | contact seal on one side | Not recorded | CN | pressed steel cage | 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.
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.
6303
Deep groove ball bearing
View full technical record →TIMKEN6303
Deep groove ball bearing
View full technical record →KOYO6303
Deep groove ball bearing
View full technical record →NTN6303
Deep groove ball bearing
View full technical record →NSK6303
Deep groove ball bearing
View full technical record →NACHI6303
Deep groove ball bearing
View full technical record →NACHI6303-2NKE9
Deep groove ball bearing
View full technical record →NACHI6303-2NSE9
Deep groove ball bearing
View full technical record →KOYO6303 2RD
Deep groove ball bearing
View full technical record →TIMKEN6303-2RS
Deep groove ball bearing
View full technical record →KOYO6303 2RS
Deep groove ball bearing
View full technical record →TIMKEN6303-2RS-C3
Deep groove ball bearing
View full technical record →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.
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.