FAG 6309 Bearing — Specifications, Dimensions & Cross-Reference
The FAG 6309 is a deep groove ball bearing manufactured by FAG. It belongs to the 6300 series and features dimensions of 45 × 100 × 25 mm (bore × OD × width). This bearing has a dynamic load rating of 52,700 N and a static load rating of 31,500 N, making it suitable for heavy-duty applications.
Technical Specifications
| Dimensions | |
|---|---|
| Bore Diameter (d) | 45 mm |
| Outside Diameter (D) | 100 mm |
| Width (B) | 25 mm |
| Weight | 0.781 kg |
| Performance | |
|---|---|
| Dynamic Load Rating (Cr) | 52,700 N |
| Static Load Rating (C₀r) | 31,500 N |
| Limiting Speed (Grease) | 6,700 rpm |
| Limiting Speed (Oil) | 8,000 rpm |
Brand Cross-Reference — 6309 Equivalents
The following bearings from other manufacturers are interchangeable with the FAG 6309. All share identical dimensions (45×100×25mm) and comparable load ratings:
| Brand | Part Number | Dynamic Load (N) | Static Load (N) |
|---|---|---|---|
| FAG | FAG 6309 ✦ | 52,700 | 31,500 |
| Timken | Timken 6309 | 52,700 | 31,500 |
| SKF | SKF 6309 | 52,700 | 31,500 |
| NTN | NTN 6309 | 52,700 | 31,500 |
| NACHI | NACHI 6309 | 52,700 | 31,500 |
| KOYO | KOYO 6309 | 52,700 | 31,500 |
| Timken | Timken 6309 | 52,700 | 31,500 |
| NSK | NSK 6309 | 52,700 | 31,500 |
| NTN | NTN 6309 | 52,700 | 31,500 |
| SKF | SKF 6309 | 52,700 | 31,500 |
Available Variants
The FAG 6309 base bearing is available in these configurations:
Frequently Asked Questions
What are the dimensions of the FAG 6309?
The FAG 6309 has a bore diameter of 45mm, outside diameter of 100mm, and width of 25mm. It weighs 0.781kg.
What is the load capacity of the FAG 6309?
The dynamic load rating (Cr) is 52,700 N and the static load rating (C₀r) is 31,500 N. The maximum recommended speed is 6,700 rpm with grease lubrication or 8,000 rpm with oil lubrication.
What bearings are equivalent to FAG 6309?
The 6309 is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 45×100×25mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.