BEARINGDEXDeep groove ball, miniature
604 bearing
4 mm bore, 12 mm outside diameter, 4 mm width (0.1575 × 0.4724 × 0.1575 in).
Dimensions
| mm | inch | |
|---|---|---|
| Bore d | 4 | 0.1575 |
| Outside diameter D | 12 | 0.4724 |
| Width B | 4 | 0.1575 |
Quick numbers
| Pitch diameter dm | 8.0 mm |
| Section height (D − d)/2 | 4.0 mm |
| n·dm at 1,800 rpm | 14,400 |
| n·dm at 3,600 rpm | 28,800 |
Compare against the maker's limiting speed. Speed calculator · L10 life
What the number means
6Deep groove ball
0Diameter series 0: extra light
4Single digit: bore is 4 mm, written directly
How each brand writes it
Same bearing, every maker's notation| Version | SKF | FAG | NSK | NTN | Koyo | NACHI |
|---|---|---|---|---|---|---|
| Open | 604 | 604 | 604 | 604 | 604 | 604 |
| Shields both sides | 604-2Z | 604-2ZR | 604ZZ | 604ZZ | 604ZZ | 604ZZE |
| Contact seals both sides | 604-2RSH | 604-2RSR | 604DDU | 604LLU | 604-2RS | 604-2NSE |
| Contact seals both sides, C3 | 604-2RSH/C3 | 604-2RSR-C3 | 604DDUC3 | 604LLUC3 | 604-2RSC3 | 604-2NSE C3 Verify |
| Non-contact seals both sides | 604-2RSL | 604-2BRS Verify | 604VV | 604LLB | 604-2RU Verify | 604-2NKE Verify |
| Shields both sides, C3 | 604-2Z/C3 | 604-2ZR-C3 | 604ZZC3 | 604ZZC3 | 604ZZC3 | 604ZZE C3 Verify |