The Koyo 6308ZZ is a standard size deep groove ball bearings with ISO dimensions 40×90×23 mm. Bearings in the 40mm bore range are commonly used in motors 5.5-37kW, centrifugal pumps, air compressors, industrial gearboxes (5.5-37kW range). This is an double shielded (ZZ), effective dust prevention while allowing grease replenishment variant. Koyo (JTEKT) Japan — OEM automotive bearings for Toyota, Honda, Japanese quality competitive pricing — 6 equivalent brands available under ISO designation 6308.
Koyo 6308ZZ
Deep Groove Ball Bearings — 40×90×23 mm — ISO 6308
Technical Specifications
Full specifications for Koyo 6308ZZ per OEM catalog.
* Tolerances per ISO. Specifications per OEM catalog.
Cross-Reference — Equivalent Codes
Same ISO 6308 — interchangeable dimensions.
| Brand | Part Number |
|---|---|
| Koyo | 6308ZZ |
| fag | 6308-2Z |
| nsk | 6308ZZ |
| ntn | 6308ZZ |
| skf | 6308-2Z |
| zvl | 6308-2ZR |
| nachi | 6308ZZE |
| timken | 6308-2Z |
* C/C₀ may vary ±5% across manufacturers.
Compare 6308 Across Brands
Same interchangeable dimensions — different load ratings and pricing.
FAQ — Koyo 6308ZZ
Quick answers to common questions.
Common Applications
Deep Groove Ball Bearings with 40mm bore diameter are commonly used in motors 5.5-37kW, centrifugal pumps, air compressors, industrial gearboxes (5.5-37kW range).
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