NTN 6330-ZZ Bearing — Specifications, Dimensions & Cross-Reference
The NTN 6330-ZZ is a deep groove ball bearing double metal shielded manufactured by NTN. 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-ZZ Equivalents
The following bearings from other manufacturers are interchangeable with the NTN 6330-ZZ. All share identical dimensions (150×320×65mm) and comparable load ratings:
| Brand | Part Number | Dynamic Load (N) | Static Load (N) |
|---|---|---|---|
| NTN | NTN 6330-ZZ ✦ | 291,000 | 280,000 |
| Timken | Timken 6330-ZZ | 291,000 | 280,000 |
| SKF | SKF 6330-ZZ | 291,000 | 280,000 |
| NACHI | NACHI 6330-ZZ | 291,000 | 280,000 |
| KOYO | KOYO 6330-ZZ | 291,000 | 280,000 |
| FAG | FAG 6330-ZZ | 291,000 | 280,000 |
| Timken | Timken 6330-ZZ | 291,000 | 280,000 |
| NTN | NTN 6330-ZZ | 291,000 | 280,000 |
| NSK | NSK 6330-ZZ | 291,000 | 280,000 |
| SKF | SKF 6330-ZZ | 291,000 | 280,000 |
Available Variants
The NTN 6330 base bearing is available in these configurations:
Frequently Asked Questions
What are the dimensions of the NTN 6330-ZZ?
The NTN 6330-ZZ 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 NTN 6330-ZZ?
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 NTN 6330-ZZ?
The 6330-ZZ 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.