309 bearing dimensions & suffix variants
Look up recorded dimensions for designations beginning with 309. 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.
309 dimensions and recorded technical data
The recorded 309 base designation measures 45×100×25 mm (inside diameter d × outside diameter D × width B). This answer uses unsuffixed records from SKF. 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. 19 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) |
|---|---|---|---|---|---|---|
| SKF309Deep groove ball bearing with filling slots |
| 55 kN | 44 kN | 13000 rpm | 7500 rpm | 0.89 kg890 g |
| SKF309-2ZDeep groove ball bearing with filling slots and integral sealing |
| 55 kN | 44 kN | 13000 rpm | 6000 rpm | 0.912 kg912 g |
| SKF309-2ZNRDeep groove ball bearing with filling slots and integral sealing |
| 55 kN | 44 kN | 13000 rpm | 6000 rpm | 0.895 kg895 g |
| SKF309/C3Deep groove ball bearing with filling slots |
| 55 kN | 44 kN | 13000 rpm | 7500 rpm | 0.89 kg890 g |
| SKF309 NRDeep groove ball bearing with filling slots and snap ring |
| 55 kN | 44 kN | 13000 rpm | 7500 rpm | 0.903 kg903 g |
| SKF309 NR/C3Deep groove ball bearing with filling slots and snap ring |
| 55 kN | 44 kN | 13000 rpm | 7500 rpm | 0.904 kg904 g |
| SKF309-ZDeep groove ball bearing with filling slots and integral sealing |
| 55 kN | 44 kN | 13000 rpm | 7500 rpm | 0.904 kg904 g |
| SKF309-ZNRDeep groove ball bearing with filling slots and integral sealing |
| 55 kN | 44 kN | 13000 rpm | 7500 rpm | 0.915 kg915 g |
| TIMKEN309KDDFS50000Deep groove ball bearing |
| 52.8 kN | 31.7 kN | — | — | 0.86 kg860 g |
| TIMKEN309KDDFS50545Deep groove ball bearing |
| 52.8 kN | 31.7 kN | — | — | 0.86 kg860 g |
| TIMKEN309KDFS50000Deep groove ball bearing |
| 52.8 kN | 31.7 kN | — | — | 0.86 kg860 g |
| TIMKEN309KDGNFS50000Deep groove ball bearing |
| 52.8 kN | 31.7 kN | — | — | 0.86 kg860 g |
| TIMKEN309KFS50000Deep groove ball bearing |
| 52.8 kN | 31.7 kN | — | — | 0.86 kg860 g |
| TIMKEN309KSDeep groove ball bearing |
| 52.8 kN | 31.7 kN | — | — | 0.86 kg860 g |
| TIMKEN309KZDeep groove ball bearing |
| 52.8 kN | 31.7 kN | — | — | 0.86 kg860 g |
| TIMKEN309PPFS50000Deep groove ball bearing |
| 52.8 kN | 31.7 kN | — | — | 0.86 kg860 g |
| TIMKEN309WDeep groove ball bearing |
| 69.1 kN | 47.5 kN | — | — | 0.83 kg830 g |
| TIMKEN309WDNDeep groove ball bearing |
| 69.1 kN | 47.5 kN | — | — | 0.93 kg930 g |
| TIMKEN309WGDeep groove ball bearing |
| 69.1 kN | 47.5 kN | — | — | 0.93 kg930 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 309 | Without | Not recorded | CN | Sheet metal | Bearing steel | None |
| SKF 309-2Z | Shield on both sides | Not recorded | CN | Sheet metal | Bearing steel | Grease |
| SKF 309-2ZNR | Shield on both sides | Not recorded | CN | Sheet metal | Bearing steel | Grease |
| SKF 309/C3 | Without | Not recorded | C3 | Sheet metal | Bearing steel | None |
| SKF 309 NR | Without | Not recorded | CN | Sheet metal | Bearing steel | None |
| SKF 309 NR/C3 | Without | Not recorded | C3 | Sheet metal | Bearing steel | None |
| SKF 309-Z | Shield on one side | Not recorded | CN | Sheet metal | Bearing steel | None |
| SKF 309-ZNR | Shield on one side | Not recorded | CN | Sheet metal | Bearing steel | None |
| TIMKEN 309KDDFS50000 | Shielded | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 309KDDFS50545 | Shielded | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 309KDFS50000 | Shielded | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 309KDGNFS50000 | Shielded | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 309KFS50000 | Open | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 309KS | Open | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 309KZ | Shielded | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 309PPFS50000 | Sealed | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 309W | Open | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 309WDN | Shielded | Not recorded | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 309WG | Open | Not recorded | Not recorded | 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.
309
Deep groove ball bearing with filling slots
View full technical record →SKF309-2Z
Deep groove ball bearing with filling slots and integral sealing
View full technical record →SKF309-2ZNR
Deep groove ball bearing with filling slots and integral sealing
View full technical record →SKF309/C3
Deep groove ball bearing with filling slots
View full technical record →TIMKEN309KDDFS50000
Deep groove ball bearing
View full technical record →TIMKEN309KDDFS50545
Deep groove ball bearing
View full technical record →TIMKEN309KDFS50000
Deep groove ball bearing
View full technical record →TIMKEN309KDGNFS50000
Deep groove ball bearing
View full technical record →TIMKEN309KFS50000
Deep groove ball bearing
View full technical record →TIMKEN309KS
Deep groove ball bearing
View full technical record →TIMKEN309KZ
Deep groove ball bearing
View full technical record →SKF309 NR
Deep groove ball bearing with filling slots and snap ring
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.