BEARINGDEXDeep groove ball
6315 bearing
75 mm bore, 160 mm outside diameter, 37 mm width (2.9528 × 6.2992 × 1.4567 in).
Dimensions
| mm | inch | |
|---|---|---|
| Bore d | 75 | 2.9528 |
| Outside diameter D | 160 | 6.2992 |
| Width B | 37 | 1.4567 |
Quick numbers
| Pitch diameter dm | 117.5 mm |
| Section height (D − d)/2 | 42.5 mm |
| n·dm at 1,800 rpm | 211,500 |
| n·dm at 3,600 rpm | 423,000 |
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.
15Bore code 15 × 5 = 75 mm
How each brand writes it
Same bearing, every maker's notation| Version | SKF | FAG | NSK | NTN | Koyo | NACHI |
|---|---|---|---|---|---|---|
| Open | 6315 | 6315 | 6315 | 6315 | 6315 | 6315 |
| Shields both sides | 6315-2Z | 6315-2ZR | 6315ZZ | 6315ZZ | 6315ZZ | 6315ZZE |
| Contact seals both sides | 6315-2RSH | 6315-2RSR | 6315DDU | 6315LLU | 6315-2RS | 6315-2NSE |
| Contact seals both sides, C3 | 6315-2RSH/C3 | 6315-2RSR-C3 | 6315DDUC3 | 6315LLUC3 | 6315-2RSC3 | 6315-2NSE C3 Verify |
| Non-contact seals both sides | 6315-2RSL | 6315-2BRS Verify | 6315VV | 6315LLB | 6315-2RU Verify | 6315-2NKE Verify |
| Shields both sides, C3 | 6315-2Z/C3 | 6315-2ZR-C3 | 6315ZZC3 | 6315ZZC3 | 6315ZZC3 | 6315ZZE C3 Verify |
Same size, different bearing
These share the 75 × 160 × 37 mm envelope but carry load differently. They aren't drop-in swaps.