The NSK 51309 is a standard size thrust ball bearings with ISO dimensions 45×85×28 mm. Bearings in the 45mm bore range are commonly used in vertical ball screws, large CNC rotary tables, heavy jacks, vertical pump shafts. This is an open type, requires periodic lubrication, suitable for clean environments variant. NSK Japan — precision bearing specialist, CNC spindles and high-speed bearings — 4 equivalent brands available under ISO designation 51309.
NSK 51309
Thrust Ball Bearings — 45×85×28 mm — ISO 51309
Technical Specifications
Full specifications for NSK 51309 per OEM catalog.
* Tolerances per ISO. Specifications per OEM catalog.
Cross-Reference — Equivalent Codes
Same ISO 51309 — interchangeable dimensions.
| Brand | Part Number |
|---|---|
| NSK | 51309 |
| fag | 51309 |
| ntn | 51309 |
| skf | 51309 |
| zvl | 51309 |
| nachi | 51309 |
* C/C₀ may vary ±5% across manufacturers.
FAQ — NSK 51309
Quick answers to common questions.
Common Applications
Thrust Ball Bearings with 45mm bore diameter are commonly used in vertical ball screws, large CNC rotary tables, heavy jacks, vertical pump shafts.
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