BEARINGDEXDeep groove ball, thin section
6805 bearing
25 mm bore, 37 mm outside diameter, 7 mm width (0.9843 × 1.4567 × 0.2756 in). SKF numbers it 61805.
Dimensions
| mm | inch | |
|---|---|---|
| Bore d | 25 | 0.9843 |
| Outside diameter D | 37 | 1.4567 |
| Width B | 7 | 0.2756 |
Quick numbers
| Pitch diameter dm | 31.0 mm |
| Section height (D − d)/2 | 6.0 mm |
| n·dm at 1,800 rpm | 55,800 |
| n·dm at 3,600 rpm | 111,600 |
Compare against the maker's limiting speed. Speed calculator · L10 life
What the number means
6Deep groove ball, thin section
8Diameter series 8: thin section. Width series 0 is implied and left off.
05Bore code 05 × 5 = 25 mm
How each brand writes it
Same bearing, every maker's notation| Version | SKF | FAG | NSK | NTN | Koyo | NACHI |
|---|---|---|---|---|---|---|
| Open | 61805 | 6805 | 6805 | 6805 | 6805 | 6805 |
| Shields both sides | 61805-2Z | 6805-2ZR | 6805ZZ | 6805ZZ | 6805ZZ | 6805ZZE |
| Contact seals both sides | 61805-2RSH | 6805-2RSR | 6805DDU | 6805LLU | 6805-2RS | 6805-2NSE |
| Contact seals both sides, C3 | 61805-2RSH/C3 | 6805-2RSR-C3 | 6805DDUC3 | 6805LLUC3 | 6805-2RSC3 | 6805-2NSE C3 Verify |
| Non-contact seals both sides | 61805-2RSL | 6805-2BRS Verify | 6805VV | 6805LLB | 6805-2RU Verify | 6805-2NKE Verify |
| Shields both sides, C3 | 61805-2Z/C3 | 6805-2ZR-C3 | 6805ZZC3 | 6805ZZC3 | 6805ZZC3 | 6805ZZE C3 Verify |