The NACHI 51204 is a small size thrust ball bearings with ISO dimensions 20×40×14 mm. Bearings in the 20mm bore range are commonly used in CNC rotary tables, couplings, hydraulic jacks, small vertical motor shafts. This is an open type, requires periodic lubrication, suitable for clean environments variant. NACHI Japan — bearings and cutting tools, strong in machine tool applications — 4 equivalent brands available under ISO designation 51204.
NACHI 51204
Thrust Ball Bearings — 20×40×14 mm — ISO 51204
Technical Specifications
Full specifications for NACHI 51204 per OEM catalog.
* Tolerances per ISO. Specifications per OEM catalog.
Cross-Reference — Equivalent Codes
Same ISO 51204 — interchangeable dimensions.
| Brand | Part Number |
|---|---|
| NACHI | 51204 |
| fag | 51204 |
| nsk | 51204 |
| ntn | 51204 |
| skf | 51204 |
| zvl | 51204 |
* C/C₀ may vary ±5% across manufacturers.
FAQ — NACHI 51204
Quick answers to common questions.
Common Applications
Thrust Ball Bearings with 20mm bore diameter are commonly used in CNC rotary tables, couplings, hydraulic jacks, small vertical motor shafts.
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