KOYO 6310-NR Bearing — Specifications, Dimensions & Cross-Reference
The KOYO 6310-NR is a deep groove ball bearing with snap ring groove manufactured by KOYO. It belongs to the 6300 series and features dimensions of 50 × 110 × 27 mm (bore × OD × width). This bearing has a dynamic load rating of 61,800 N and a static load rating of 38,000 N, making it suitable for heavy-duty applications.
Technical Specifications
| Dimensions | |
|---|---|
| Bore Diameter (d) | 50 mm |
| Outside Diameter (D) | 110 mm |
| Width (B) | 27 mm |
| Weight | 1.056 kg |
| Performance | |
|---|---|
| Dynamic Load Rating (Cr) | 61,800 N |
| Static Load Rating (C₀r) | 38,000 N |
| Limiting Speed (Grease) | 6,300 rpm |
| Limiting Speed (Oil) | 7,500 rpm |
Brand Cross-Reference — 6310-NR Equivalents
The following bearings from other manufacturers are interchangeable with the KOYO 6310-NR. All share identical dimensions (50×110×27mm) and comparable load ratings:
| Brand | Part Number | Dynamic Load (N) | Static Load (N) |
|---|---|---|---|
| KOYO | KOYO 6310-NR ✦ | 61,800 | 38,000 |
| Timken | Timken 6310-NR | 61,800 | 38,000 |
| SKF | SKF 6310-NR | 61,800 | 38,000 |
| NTN | NTN 6310-NR | 61,800 | 38,000 |
| NACHI | NACHI 6310-NR | 61,800 | 38,000 |
| FAG | FAG 6310-NR | 61,800 | 38,000 |
| Timken | Timken 6310-NR | 61,800 | 38,000 |
| NSK | NSK 6310-NR | 61,800 | 38,000 |
| NTN | NTN 6310-NR | 61,800 | 38,000 |
| SKF | SKF 6310-NR | 61,800 | 38,000 |
Available Variants
The KOYO 6310 base bearing is available in these configurations:
Frequently Asked Questions
What are the dimensions of the KOYO 6310-NR?
The KOYO 6310-NR has a bore diameter of 50mm, outside diameter of 110mm, and width of 27mm. It weighs 1.056kg.
What is the load capacity of the KOYO 6310-NR?
The dynamic load rating (Cr) is 61,800 N and the static load rating (C₀r) is 38,000 N. The maximum recommended speed is 6,300 rpm with grease lubrication or 7,500 rpm with oil lubrication.
What bearings are equivalent to KOYO 6310-NR?
The 6310-NR is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 50×110×27mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.