BEARINGDEXDeep groove ball
6408 bearing
40 mm bore, 110 mm outside diameter, 27 mm width (1.5748 × 4.3307 × 1.063 in).
Dimensions
| mm | inch | |
|---|---|---|
| Bore d | 40 | 1.5748 |
| Outside diameter D | 110 | 4.3307 |
| Width B | 27 | 1.0630 |
Quick numbers
| Pitch diameter dm | 75.0 mm |
| Section height (D − d)/2 | 35.0 mm |
| n·dm at 1,800 rpm | 135,000 |
| n·dm at 3,600 rpm | 270,000 |
Compare against the maker's limiting speed. Speed calculator · L10 life
What the number means
6Deep groove ball
4Diameter series 4: heavy. 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 | 6408 | 6408 | 6408 | 6408 | 6408 | 6408 |
| Shields both sides | 6408-2Z | 6408-2ZR | 6408ZZ | 6408ZZ | 6408ZZ | 6408ZZE |
| Contact seals both sides | 6408-2RSH | 6408-2RSR | 6408DDU | 6408LLU | 6408-2RS | 6408-2NSE |
| Contact seals both sides, C3 | 6408-2RSH/C3 | 6408-2RSR-C3 | 6408DDUC3 | 6408LLUC3 | 6408-2RSC3 | 6408-2NSE C3 Verify |
| Non-contact seals both sides | 6408-2RSL | 6408-2BRS Verify | 6408VV | 6408LLB | 6408-2RU Verify | 6408-2NKE Verify |
| Shields both sides, C3 | 6408-2Z/C3 | 6408-2ZR-C3 | 6408ZZC3 | 6408ZZC3 | 6408ZZC3 | 6408ZZE C3 Verify |