NSK 6306 Bearing — Specifications, Dimensions & Cross-Reference
The NSK 6306 is a deep groove ball bearing manufactured by NSK. It belongs to the 6300 series and features dimensions of 30 × 72 × 19 mm (bore × OD × width). This bearing has a dynamic load rating of 28,100 N and a static load rating of 16,000 N, making it suitable for heavy-duty applications.
Technical Specifications
| Dimensions | |
|---|---|
| Bore Diameter (d) | 30 mm |
| Outside Diameter (D) | 72 mm |
| Width (B) | 19 mm |
| Weight | 0.327 kg |
| Performance | |
|---|---|
| Dynamic Load Rating (Cr) | 28,100 N |
| Static Load Rating (C₀r) | 16,000 N |
| Limiting Speed (Grease) | 9,000 rpm |
| Limiting Speed (Oil) | 11,000 rpm |
Brand Cross-Reference — 6306 Equivalents
The following bearings from other manufacturers are interchangeable with the NSK 6306. All share identical dimensions (30×72×19mm) and comparable load ratings:
| Brand | Part Number | Dynamic Load (N) | Static Load (N) |
|---|---|---|---|
| NSK | NSK 6306 ✦ | 28,100 | 16,000 |
| Timken | Timken 6306 | 28,100 | 16,000 |
| SKF | SKF 6306 | 28,100 | 16,000 |
| NTN | NTN 6306 | 28,100 | 16,000 |
| NACHI | NACHI 6306 | 28,100 | 16,000 |
| KOYO | KOYO 6306 | 28,100 | 16,000 |
| FAG | FAG 6306 | 28,100 | 16,000 |
| Timken | Timken 6306 | 28,100 | 16,000 |
| NTN | NTN 6306 | 28,100 | 16,000 |
| SKF | SKF 6306 | 28,100 | 16,000 |
Available Variants
The NSK 6306 base bearing is available in these configurations:
Frequently Asked Questions
What are the dimensions of the NSK 6306?
The NSK 6306 has a bore diameter of 30mm, outside diameter of 72mm, and width of 19mm. It weighs 0.327kg.
What is the load capacity of the NSK 6306?
The dynamic load rating (Cr) is 28,100 N and the static load rating (C₀r) is 16,000 N. The maximum recommended speed is 9,000 rpm with grease lubrication or 11,000 rpm with oil lubrication.
What bearings are equivalent to NSK 6306?
The 6306 is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 30×72×19mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.