BEARINGDEXDeep groove ball, thin section
6809 bearing
45 mm bore, 58 mm outside diameter, 7 mm width (1.7717 × 2.2835 × 0.2756 in). SKF numbers it 61809.
Dimensions
| mm | inch | |
|---|---|---|
| Bore d | 45 | 1.7717 |
| Outside diameter D | 58 | 2.2835 |
| Width B | 7 | 0.2756 |
Quick numbers
| Pitch diameter dm | 51.5 mm |
| Section height (D − d)/2 | 6.5 mm |
| n·dm at 1,800 rpm | 92,700 |
| n·dm at 3,600 rpm | 185,400 |
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.
09Bore code 09 × 5 = 45 mm
How each brand writes it
Same bearing, every maker's notation| Version | SKF | FAG | NSK | NTN | Koyo | NACHI |
|---|---|---|---|---|---|---|
| Open | 61809 | 6809 | 6809 | 6809 | 6809 | 6809 |
| Shields both sides | 61809-2Z | 6809-2ZR | 6809ZZ | 6809ZZ | 6809ZZ | 6809ZZE |
| Contact seals both sides | 61809-2RSH | 6809-2RSR | 6809DDU | 6809LLU | 6809-2RS | 6809-2NSE |
| Contact seals both sides, C3 | 61809-2RSH/C3 | 6809-2RSR-C3 | 6809DDUC3 | 6809LLUC3 | 6809-2RSC3 | 6809-2NSE C3 Verify |
| Non-contact seals both sides | 61809-2RSL | 6809-2BRS Verify | 6809VV | 6809LLB | 6809-2RU Verify | 6809-2NKE Verify |
| Shields both sides, C3 | 61809-2Z/C3 | 6809-2ZR-C3 | 6809ZZC3 | 6809ZZC3 | 6809ZZC3 | 6809ZZE C3 Verify |