NSK 6308 Bearing — Specifications, Dimensions & Cross-Reference
The NSK 6308 is a deep groove ball bearing manufactured by NSK. It belongs to the 6300 series and features dimensions of 40 × 90 × 23 mm (bore × OD × width). This bearing has a dynamic load rating of 41,000 N and a static load rating of 24,000 N, making it suitable for heavy-duty applications.
Technical Specifications
| Dimensions | |
|---|---|
| Bore Diameter (d) | 40 mm |
| Outside Diameter (D) | 90 mm |
| Width (B) | 23 mm |
| Weight | 0.693 kg |
| Performance | |
|---|---|
| Dynamic Load Rating (Cr) | 41,000 N |
| Static Load Rating (C₀r) | 24,000 N |
| Limiting Speed (Grease) | 7,500 rpm |
| Limiting Speed (Oil) | 9,000 rpm |
Brand Cross-Reference — 6308 Equivalents
The following bearings from other manufacturers are interchangeable with the NSK 6308. All share identical dimensions (40×90×23mm) and comparable load ratings:
| Brand | Part Number | Dynamic Load (N) | Static Load (N) |
|---|---|---|---|
| NSK | NSK 6308 ✦ | 41,000 | 24,000 |
| Timken | Timken 6308 | 41,000 | 24,000 |
| SKF | SKF 6308 | 41,000 | 24,000 |
| NTN | NTN 6308 | 41,000 | 24,000 |
| NACHI | NACHI 6308 | 41,000 | 24,000 |
| KOYO | KOYO 6308 | 41,000 | 24,000 |
| FAG | FAG 6308 | 41,000 | 24,000 |
| Timken | Timken 6308 | 41,000 | 24,000 |
| NTN | NTN 6308 | 41,000 | 24,000 |
| SKF | SKF 6308 | 41,000 | 24,000 |
Available Variants
The NSK 6308 base bearing is available in these configurations:
Frequently Asked Questions
What are the dimensions of the NSK 6308?
The NSK 6308 has a bore diameter of 40mm, outside diameter of 90mm, and width of 23mm. It weighs 0.693kg.
What is the load capacity of the NSK 6308?
The dynamic load rating (Cr) is 41,000 N and the static load rating (C₀r) is 24,000 N. The maximum recommended speed is 7,500 rpm with grease lubrication or 9,000 rpm with oil lubrication.
What bearings are equivalent to NSK 6308?
The 6308 is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 40×90×23mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.