6908 bearing dimensions & suffix variants
Look up recorded dimensions for designations beginning with 6908. 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.
6908 — PEER catalogue dimensions
Independent technical reference from PEER’s historical 2009 sheets; checked 2026-10-03. These are catalogue records, not current-stock claims or replacement approvals. Printed units are kept separate.
| Full catalogue model | d×D×B (mm) | d×D×B (in) | Closed width / execution scope |
|---|---|---|---|
| PEER · 6900 series6908 | 40× | 1.5748× | Base designation only; complete closure execution must be checked |
Read ratings without transferring them to another execution
Cr and Cor are catalogue basic load ratings, not allowable application loads. Oil/grease values below are explicitly for open bearings where supplied. They are not sealed-bearing or machine operating-speed approvals. A dash means withheld or not established here.
| Model | Dynamic Cr / static Cor | Open: oil / grease | Evidence boundary |
|---|---|---|---|
| 6908 | 14457 / 10231 N | 13000 / 11000 r/min | Base-row catalogue values only; no cross-brand transfer. |
Printed decimal conversions inherit catalogue rounding; more decimal places do not create manufacturing accuracy. Special bores must not be rounded to a nearby metric bearing. The historical table does not establish an exact RS/2RS, NR, ABEC, C3, ceramic, vehicle or kit execution unless explicitly listed. No CAD or interchange approval is implied.
6908 dimensions and recorded technical data
The recorded 6908 base designation measures 40×62×12 mm (inside diameter d × outside diameter D × width B). This answer uses unsuffixed records from NSK, KOYO, NACHI, EZO. 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. 18 recorded variants are listed. A dash means the value is missing, not zero.
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) |
|---|---|---|---|---|---|---|
| NSK6908Deep groove ball bearing |
| 15 kN | 10 kN | — | — | 0.112 kg112 g |
| KOYO6908Deep groove ball bearing |
| 17.1 kN | 9.95 kN | — | 11000 rpmLimiting Speeds(Grease Lub.): 11000 min-1Limiting Speeds(Oil Lub.): 13000 min-1 | 0.112 kg112 g |
| NACHI6908Deep groove ball bearing |
| 17.2 kN | 9.95 kN | — | — | 0.108 kg108 g |
| EZO6908Deep groove ball bearing |
| 13.7 kN | 9.92 kN | — | — | 0.101 kg101 g |
| NSK6908DDUDeep groove ball bearing |
| 15 kN | 10 kN | — | — | — |
| NSK6908VVDeep groove ball bearing |
| 15 kN | 10 kN | — | — | — |
| NSK6908ZZDeep groove ball bearing |
| 15 kN | 10 kN | — | — | — |
| KOYO6908 2RDDeep groove ball bearing |
| 17.1 kN | 9.95 kN | — | 9900 rpmLimiting Speeds(Grease Lub.): 9900 min-1 | 0.112 kg112 g |
| KOYO6908 2RSDeep groove ball bearing |
| 17.1 kN | 9.95 kN | — | 6100 rpmLimiting Speeds(Grease Lub.): 6100 min-1 | 0.112 kg112 g |
| KOYO6908 2RUDeep groove ball bearing |
| 17.1 kN | 9.95 kN | — | 11000 rpmLimiting Speeds(Grease Lub.): 11000 min-1 | 0.112 kg112 g |
| KOYO6908NRDeep groove ball bearing |
| 17.1 kN | 9.95 kN | — | 11000 rpmLimiting Speeds(Grease Lub.): 11000 min-1Limiting Speeds(Oil Lub.): 13000 min-1 | 0.112 kg112 g |
| KOYO6908 ZZDeep groove ball bearing |
| 17.1 kN | 9.95 kN | — | 11000 rpmLimiting Speeds(Grease Lub.): 11000 min-1 | 0.112 kg112 g |
| NACHI6908-2NKEDeep groove ball bearing |
| 17.2 kN | 9.95 kN | — | — | — |
| NACHI6908-2NSEDeep groove ball bearing |
| 17.2 kN | 9.95 kN | — | — | — |
| NACHI6908NKEDeep groove ball bearing |
| 17.2 kN | 9.95 kN | — | — | — |
| NACHI6908NSEDeep groove ball bearing |
| 17.2 kN | 9.95 kN | — | — | — |
| NACHI6908ZEDeep groove ball bearing |
| 17.2 kN | 9.95 kN | — | — | — |
| NACHI6908ZZEDeep groove ball bearing |
| 17.2 kN | 9.95 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 / designation | Closure | Original precision | Clearance | Cage | Material | Lubricant |
|---|---|---|---|---|---|---|
| NSK 6908 | Open | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| KOYO 6908 | Open | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| NACHI 6908 | Open | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| EZO 6908 | Open (no closure suffix in this catalogue marking) | Not recorded | Not recorded | Not recorded | High-carbon chromium bearing steel | Not recorded |
| NSK 6908DDU | Contact rubber seals on both sides | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| NSK 6908VV | Non-contact rubber seals on both sides | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| NSK 6908ZZ | Metal shields on both sides | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| KOYO 6908 2RD | Extremely light contact sealed | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| KOYO 6908 2RS | Contact sealed | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| KOYO 6908 2RU | Non-contact sealed | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| KOYO 6908NR | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| KOYO 6908 ZZ | Shielded ZZ | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| NACHI 6908-2NKE | Two non-contact seals | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| NACHI 6908-2NSE | Two contact seals | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| NACHI 6908NKE | One non-contact seal | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| NACHI 6908NSE | One contact seal | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| NACHI 6908ZE | One shield | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| NACHI 6908ZZE | Two shields | 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.
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.
6908
Deep groove ball bearing
View full technical record →NSK6908
Deep groove ball bearing
View full technical record →NACHI6908
Deep groove ball bearing
View full technical record →EZO6908
Deep groove ball bearing
View full technical record →NACHI6908-2NKE
Deep groove ball bearing
View full technical record →NACHI6908-2NSE
Deep groove ball bearing
View full technical record →KOYO6908 2RD
Deep groove ball bearing
View full technical record →KOYO6908 2RS
Deep groove ball bearing
View full technical record →KOYO6908 2RU
Deep groove ball bearing
View full technical record →NSK6908DDU
Deep groove ball bearing
View full technical record →NACHI6908NKE
Deep groove ball bearing
View full technical record →KOYO6908NR
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.