BEARINGDEXDeep groove ball
6208 bearing
40 mm bore, 80 mm outside diameter, 18 mm width (1.5748 × 3.1496 × 0.7087 in).
Dimensions
| mm | inch | |
|---|---|---|
| Bore d | 40 | 1.5748 |
| Outside diameter D | 80 | 3.1496 |
| Width B | 18 | 0.7087 |
Quick numbers
| Pitch diameter dm | 60.0 mm |
| Section height (D − d)/2 | 20.0 mm |
| n·dm at 1,800 rpm | 108,000 |
| n·dm at 3,600 rpm | 216,000 |
Compare against the maker's limiting speed. Speed calculator · L10 life
What the number means
6Deep groove ball
2Diameter series 2: light. Width series 0 is implied and left off.
08Bore code 08 × 5 = 40 mm
How each brand writes it
Same bearing, every maker's notation| Version | SKF | FAG | NSK | NTN | Koyo | NACHI |
|---|---|---|---|---|---|---|
| Open | 6208 | 6208 | 6208 | 6208 | 6208 | 6208 |
| Shields both sides | 6208-2Z | 6208-2ZR | 6208ZZ | 6208ZZ | 6208ZZ | 6208ZZE |
| Contact seals both sides | 6208-2RSH | 6208-2RSR | 6208DDU | 6208LLU | 6208-2RS | 6208-2NSE |
| Contact seals both sides, C3 | 6208-2RSH/C3 | 6208-2RSR-C3 | 6208DDUC3 | 6208LLUC3 | 6208-2RSC3 | 6208-2NSE C3 Verify |
| Non-contact seals both sides | 6208-2RSL | 6208-2BRS Verify | 6208VV | 6208LLB | 6208-2RU Verify | 6208-2NKE Verify |
| Shields both sides, C3 | 6208-2Z/C3 | 6208-2ZR-C3 | 6208ZZC3 | 6208ZZC3 | 6208ZZC3 | 6208ZZE C3 Verify |
Same size, different bearing
These share the 40 × 80 × 18 mm envelope but carry load differently. They aren't drop-in swaps.