BEARINGDEXDeep groove ball, miniature
608 bearing
8 mm bore, 22 mm outside diameter, 7 mm width (0.315 × 0.8661 × 0.2756 in).
Dimensions
| mm | inch | |
|---|---|---|
| Bore d | 8 | 0.3150 |
| Outside diameter D | 22 | 0.8661 |
| Width B | 7 | 0.2756 |
Quick numbers
| Pitch diameter dm | 15.0 mm |
| Section height (D − d)/2 | 7.0 mm |
| n·dm at 1,800 rpm | 27,000 |
| n·dm at 3,600 rpm | 54,000 |
Compare against the maker's limiting speed. Speed calculator · L10 life
What the number means
6Deep groove ball
0Diameter series 0: extra light
8Single digit: bore is 8 mm, written directly
How each brand writes it
Same bearing, every maker's notation| Version | SKF | FAG | NSK | NTN | Koyo | NACHI |
|---|---|---|---|---|---|---|
| Open | 608 | 608 | 608 | 608 | 608 | 608 |
| Shields both sides | 608-2Z | 608-2ZR | 608ZZ | 608ZZ | 608ZZ | 608ZZE |
| Contact seals both sides | 608-2RSH | 608-2RSR | 608DDU | 608LLU | 608-2RS | 608-2NSE |
| Contact seals both sides, C3 | 608-2RSH/C3 | 608-2RSR-C3 | 608DDUC3 | 608LLUC3 | 608-2RSC3 | 608-2NSE C3 Verify |
| Non-contact seals both sides | 608-2RSL | 608-2BRS Verify | 608VV | 608LLB | 608-2RU Verify | 608-2NKE Verify |
| Shields both sides, C3 | 608-2Z/C3 | 608-2ZR-C3 | 608ZZC3 | 608ZZC3 | 608ZZC3 | 608ZZE C3 Verify |