NSK 6330 Bearing — Specifications, Dimensions & Cross-Reference
The NSK 6330 is a deep groove ball bearing manufactured by NSK. It belongs to the 6300 series and features dimensions of 150 × 320 × 65 mm (bore × OD × width). This bearing has a dynamic load rating of 291,000 N and a static load rating of 280,000 N, making it suitable for heavy-duty applications.
Technical Specifications
| Dimensions | |
|---|---|
| Bore Diameter (d) | 150 mm |
| Outside Diameter (D) | 320 mm |
| Width (B) | 65 mm |
| Weight | 17.200 kg |
| Performance | |
|---|---|
| Dynamic Load Rating (Cr) | 291,000 N |
| Static Load Rating (C₀r) | 280,000 N |
| Limiting Speed (Grease) | 1,800 rpm |
| Limiting Speed (Oil) | 2,400 rpm |
Brand Cross-Reference — 6330 Equivalents
The following bearings from other manufacturers are interchangeable with the NSK 6330. All share identical dimensions (150×320×65mm) and comparable load ratings:
| Brand | Part Number | Dynamic Load (N) | Static Load (N) |
|---|---|---|---|
| NSK | NSK 6330 ✦ | 291,000 | 280,000 |
| Timken | Timken 6330 | 291,000 | 280,000 |
| SKF | SKF 6330 | 291,000 | 280,000 |
| NTN | NTN 6330 | 291,000 | 280,000 |
| NACHI | NACHI 6330 | 291,000 | 280,000 |
| KOYO | KOYO 6330 | 291,000 | 280,000 |
| FAG | FAG 6330 | 291,000 | 280,000 |
| Timken | Timken 6330 | 291,000 | 280,000 |
| NTN | NTN 6330 | 291,000 | 280,000 |
| SKF | SKF 6330 | 291,000 | 280,000 |
Available Variants
The NSK 6330 base bearing is available in these configurations:
Frequently Asked Questions
What are the dimensions of the NSK 6330?
The NSK 6330 has a bore diameter of 150mm, outside diameter of 320mm, and width of 65mm. It weighs 17.200kg.
What is the load capacity of the NSK 6330?
The dynamic load rating (Cr) is 291,000 N and the static load rating (C₀r) is 280,000 N. The maximum recommended speed is 1,800 rpm with grease lubrication or 2,400 rpm with oil lubrication.
What bearings are equivalent to NSK 6330?
The 6330 is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 150×320×65mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.