51208 bearing dimensions & suffix variants
Look up recorded dimensions for designations beginning with 51208. The table retains complete manufacturer designations so special suffixes and different dimensional variants remain visible.
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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.
51208 dimensions and recorded technical data
Use the named dimensions for each complete record below. A generic d×D×B answer is not asserted where the base record is missing, dimension symbols are unverified, or the product uses a different geometry such as a housing or thrust assembly. Suffix records are not substituted for a missing base specification.
The numeric series boundary is preserved: a longer number is not included merely because its first digits match. 4 recorded variants are listed. A dash means the value is missing, not zero.
Catalogue parameters for 51208
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 51208 — 31 recorded parameters
Single direction thrust 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 | 40.0 mm |
| Outside diameter | Not separately recorded | 68.0 mm |
| Height | Not separately recorded | 19.0 mm |
Performance
| Parameter | Source symbol | Recorded value |
|---|---|---|
| Basic dynamic load rating | Not separately recorded | 44.2 kN |
| Basic static load rating | Not separately recorded | 96.5 kN |
| Reference speed | Not separately recorded | 3800.0 r/min |
| Limiting speed | Not separately recorded | 5300.0 r/min |
Properties
| Parameter | Source symbol | Recorded value |
|---|---|---|
| Axial load capability | Not separately recorded | Single-direction |
| Number of rows | Not separately recorded | 1 |
| Cage | Not separately recorded | Sheet metal |
| Housing washer type | Not separately recorded | Flat |
| Tolerance class | Not separately recorded | Normal |
| Material, bearing | Not separately recorded | Bearing steel |
| Coating | Not separately recorded | Without |
| Indicative carbon footprint for new product | Not separately recorded | 0.99 kg CO 2 e |
Logistics
| Parameter | Source symbol | Recorded value |
|---|---|---|
| Product net weight | Not separately recorded | 0.268 kg |
Engineering — Dimensions
| Parameter | Source symbol | Recorded value |
|---|---|---|
| Bore diameter | d | 40 mm |
| Outside diameter | D | 68 mm |
| Height | H | 19 mm |
| Outside diameter shaft washer | d 1 | ≈ 68 mm |
| Inner diameter housing washer | D 1 | ≈ 42 mm |
| Chamfer dimension washer | r 1,2 | min. 1 mm |
Engineering — Abutment dimensions
| Parameter | Source symbol | Recorded value |
|---|---|---|
| Abutment diameter shaft | d a | min. 57 mm |
| Abutment diameter housing | D a | max. 51 mm |
| Fillet radius | r a | max. 1 mm |
Engineering — Calculation data
| Parameter | Source symbol | Recorded value |
|---|---|---|
| Basic dynamic load rating | C | 44.2 kN |
| Basic static load rating | C 0 | 96.5 kN |
| Fatigue load limit | P u | 3.6 kN |
| Reference speed | Not separately recorded | 3800 r/min |
| Limiting speed | Not separately recorded | 5300 r/min |
| Minimum load factor | A | 0.06 |
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) |
|---|---|---|---|---|---|---|
| SKF51208Single direction thrust ball bearing |
| 44.2 kN | 96.5 kN | 3800 rpm | 5300 rpm | 0.268 kg268 g |
| FAG51208Axial deep groove ball bearing |
| — | — | 6900 rpm | 5500 rpm | 0.268 kg268 g |
| NSK51208Axial deep groove ball bearing |
| — | — | — | — | 0.27 kg270 g |
| KOYO51208Axial deep groove ball bearing |
| — | — | — | 2700 rpmLimiting Speeds(Grease Lub.): 2700 min-1Limiting Speeds(Oil Lub.): 4200 min-1 | 0.27 kg270 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 51208 | Not recorded | Not recorded | Not recorded | Sheet metal | Bearing steel | Not recorded |
| FAG 51208 | Not recorded | PN — Normal (ISO 492:2023) | Not recorded | JP — Steel sheet metal | Not recorded | Not recorded |
| NSK 51208 | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| KOYO 51208 | Not recorded | 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.
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.