NTN 6328-ZZ Bearing — Specifications, Dimensions & Cross-Reference
The NTN 6328-ZZ is a deep groove ball bearing double metal shielded manufactured by NTN. It belongs to the 6300 series and features dimensions of 140 × 300 × 62 mm (bore × OD × width). This bearing has a dynamic load rating of 270,000 N and a static load rating of 255,000 N, making it suitable for heavy-duty applications.
Technical Specifications
| Dimensions | |
|---|---|
| Bore Diameter (d) | 140 mm |
| Outside Diameter (D) | 300 mm |
| Width (B) | 62 mm |
| Weight | 14.500 kg |
| Performance | |
|---|---|
| Dynamic Load Rating (Cr) | 270,000 N |
| Static Load Rating (C₀r) | 255,000 N |
| Limiting Speed (Grease) | 2,000 rpm |
| Limiting Speed (Oil) | 2,600 rpm |
Brand Cross-Reference — 6328-ZZ Equivalents
The following bearings from other manufacturers are interchangeable with the NTN 6328-ZZ. All share identical dimensions (140×300×62mm) and comparable load ratings:
| Brand | Part Number | Dynamic Load (N) | Static Load (N) |
|---|---|---|---|
| NTN | NTN 6328-ZZ ✦ | 270,000 | 255,000 |
| NACHI | NACHI 6328-ZZ | 270,000 | 255,000 |
| KOYO | KOYO 6328-ZZ | 270,000 | 255,000 |
| FAG | FAG 6328-ZZ | 270,000 | 255,000 |
| Timken | Timken 6328-ZZ | 270,000 | 255,000 |
| NSK | NSK 6328-ZZ | 270,000 | 255,000 |
| NTN | NTN 6328-ZZ | 270,000 | 255,000 |
| SKF | SKF 6328-ZZ | 270,000 | 255,000 |
Available Variants
The NTN 6328 base bearing is available in these configurations:
Frequently Asked Questions
What are the dimensions of the NTN 6328-ZZ?
The NTN 6328-ZZ has a bore diameter of 140mm, outside diameter of 300mm, and width of 62mm. It weighs 14.500kg.
What is the load capacity of the NTN 6328-ZZ?
The dynamic load rating (Cr) is 270,000 N and the static load rating (C₀r) is 255,000 N. The maximum recommended speed is 2,000 rpm with grease lubrication or 2,600 rpm with oil lubrication.
What bearings are equivalent to NTN 6328-ZZ?
The 6328-ZZ is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 140×300×62mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.