BEARINGDEXDeep groove ball
6317 bearing
85 mm bore, 180 mm outside diameter, 41 mm width (3.3465 × 7.0866 × 1.6142 in).
Dimensions
| mm | inch | |
|---|---|---|
| Bore d | 85 | 3.3465 |
| Outside diameter D | 180 | 7.0866 |
| Width B | 41 | 1.6142 |
Quick numbers
| Pitch diameter dm | 132.5 mm |
| Section height (D − d)/2 | 47.5 mm |
| n·dm at 1,800 rpm | 238,500 |
| n·dm at 3,600 rpm | 477,000 |
Compare against the maker's limiting speed. Speed calculator · L10 life
What the number means
6Deep groove ball
3Diameter series 3: medium. Width series 0 is implied and left off.
17Bore code 17 × 5 = 85 mm
How each brand writes it
Same bearing, every maker's notation| Version | SKF | FAG | NSK | NTN | Koyo | NACHI |
|---|---|---|---|---|---|---|
| Open | 6317 | 6317 | 6317 | 6317 | 6317 | 6317 |
| Shields both sides | 6317-2Z | 6317-2ZR | 6317ZZ | 6317ZZ | 6317ZZ | 6317ZZE |
| Contact seals both sides | 6317-2RSH | 6317-2RSR | 6317DDU | 6317LLU | 6317-2RS | 6317-2NSE |
| Contact seals both sides, C3 | 6317-2RSH/C3 | 6317-2RSR-C3 | 6317DDUC3 | 6317LLUC3 | 6317-2RSC3 | 6317-2NSE C3 Verify |
| Non-contact seals both sides | 6317-2RSL | 6317-2BRS Verify | 6317VV | 6317LLB | 6317-2RU Verify | 6317-2NKE Verify |
| Shields both sides, C3 | 6317-2Z/C3 | 6317-2ZR-C3 | 6317ZZC3 | 6317ZZC3 | 6317ZZC3 | 6317ZZE C3 Verify |
Same size, different bearing
These share the 85 × 180 × 41 mm envelope but carry load differently. They aren't drop-in swaps.