NTN 51108 Bearing — Specifications, Dimensions & Cross-Reference
The NTN 51108 is a thrust ball bearing manufactured by NTN. It belongs to the 51100 series and features dimensions of 40 × 60 × 13 mm (bore × OD × width). This bearing has a dynamic load rating of 26,700 N and a static load rating of 24,500 N, making it suitable for heavy-duty applications.
Technical Specifications
| Dimensions | |
|---|---|
| Bore Diameter (d) | 40 mm |
| Outside Diameter (D) | 60 mm |
| Width (B) | 13 mm |
| Weight | 0.110 kg |
| Performance | |
|---|---|
| Dynamic Load Rating (Cr) | 26,700 N |
| Static Load Rating (C₀r) | 24,500 N |
| Limiting Speed (Grease) | 4,500 rpm |
| Limiting Speed (Oil) | 6,000 rpm |
Brand Cross-Reference — 51108 Equivalents
The following bearings from other manufacturers are interchangeable with the NTN 51108. All share identical dimensions (40×60×13mm) and comparable load ratings:
| Brand | Part Number | Dynamic Load (N) | Static Load (N) |
|---|---|---|---|
| NTN | NTN 51108 ✦ | 26,700 | 24,500 |
| NTN | NTN 51108 | 26,700 | 24,500 |
| NACHI | NACHI 51108 | 26,700 | 24,500 |
| KOYO | KOYO 51108 | 26,700 | 24,500 |
| Timken | Timken 51108 | 26,700 | 24,500 |
| NSK | NSK 51108 | 26,700 | 24,500 |
| FAG | FAG 51108 | 26,700 | 24,500 |
| SKF | SKF 51108 | 26,700 | 24,500 |
Available Variants
The NTN 51108 base bearing is available in these configurations:
Frequently Asked Questions
What are the dimensions of the NTN 51108?
The NTN 51108 has a bore diameter of 40mm, outside diameter of 60mm, and width of 13mm. It weighs 0.110kg.
What is the load capacity of the NTN 51108?
The dynamic load rating (Cr) is 26,700 N and the static load rating (C₀r) is 24,500 N. The maximum recommended speed is 4,500 rpm with grease lubrication or 6,000 rpm with oil lubrication.
What bearings are equivalent to NTN 51108?
The 51108 is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 40×60×13mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.