NTN 51110-ZZ Bearing — Specifications, Dimensions & Cross-Reference
The NTN 51110-ZZ is a thrust ball bearing double metal shielded manufactured by NTN. It belongs to the 51100 series and features dimensions of 50 × 70 × 14 mm (bore × OD × width). This bearing has a dynamic load rating of 29,600 N and a static load rating of 29,000 N, making it suitable for heavy-duty applications.
Technical Specifications
| Dimensions | |
|---|---|
| Bore Diameter (d) | 50 mm |
| Outside Diameter (D) | 70 mm |
| Width (B) | 14 mm |
| Weight | 0.135 kg |
| Performance | |
|---|---|
| Dynamic Load Rating (Cr) | 29,600 N |
| Static Load Rating (C₀r) | 29,000 N |
| Limiting Speed (Grease) | 4,000 rpm |
| Limiting Speed (Oil) | 5,300 rpm |
Brand Cross-Reference — 51110-ZZ Equivalents
The following bearings from other manufacturers are interchangeable with the NTN 51110-ZZ. All share identical dimensions (50×70×14mm) and comparable load ratings:
| Brand | Part Number | Dynamic Load (N) | Static Load (N) |
|---|---|---|---|
| NTN | NTN 51110-ZZ ✦ | 29,600 | 29,000 |
| NACHI | NACHI 51110-ZZ | 29,600 | 29,000 |
| KOYO | KOYO 51110-ZZ | 29,600 | 29,000 |
| Timken | Timken 51110-ZZ | 29,600 | 29,000 |
| NSK | NSK 51110-ZZ | 29,600 | 29,000 |
| FAG | FAG 51110-ZZ | 29,600 | 29,000 |
| NTN | NTN 51110-ZZ | 29,600 | 29,000 |
| SKF | SKF 51110-ZZ | 29,600 | 29,000 |
Available Variants
The NTN 51110 base bearing is available in these configurations:
Frequently Asked Questions
What are the dimensions of the NTN 51110-ZZ?
The NTN 51110-ZZ has a bore diameter of 50mm, outside diameter of 70mm, and width of 14mm. It weighs 0.135kg.
What is the load capacity of the NTN 51110-ZZ?
The dynamic load rating (Cr) is 29,600 N and the static load rating (C₀r) is 29,000 N. The maximum recommended speed is 4,000 rpm with grease lubrication or 5,300 rpm with oil lubrication.
What bearings are equivalent to NTN 51110-ZZ?
The 51110-ZZ is manufactured by multiple brands including SKF, NTN, NSK, FAG, Timken, KOYO, and NACHI. All versions share the same 50×70×14mm dimensions and are interchangeable in most applications. See the cross-reference table above for detailed comparisons.