BEARINGDEXDeep groove ball
6209 bearing
45 mm bore, 85 mm outside diameter, 19 mm width (1.7717 × 3.3465 × 0.748 in).
Dimensions
| mm | inch | |
|---|---|---|
| Bore d | 45 | 1.7717 |
| Outside diameter D | 85 | 3.3465 |
| Width B | 19 | 0.7480 |
Quick numbers
| Pitch diameter dm | 65.0 mm |
| Section height (D − d)/2 | 20.0 mm |
| n·dm at 1,800 rpm | 117,000 |
| n·dm at 3,600 rpm | 234,000 |
Compare against the maker's limiting speed. Speed calculator · L10 life
What the number means
6Deep groove ball
2Diameter series 2: light. 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 | 6209 | 6209 | 6209 | 6209 | 6209 | 6209 |
| Shields both sides | 6209-2Z | 6209-2ZR | 6209ZZ | 6209ZZ | 6209ZZ | 6209ZZE |
| Contact seals both sides | 6209-2RSH | 6209-2RSR | 6209DDU | 6209LLU | 6209-2RS | 6209-2NSE |
| Contact seals both sides, C3 | 6209-2RSH/C3 | 6209-2RSR-C3 | 6209DDUC3 | 6209LLUC3 | 6209-2RSC3 | 6209-2NSE C3 Verify |
| Non-contact seals both sides | 6209-2RSL | 6209-2BRS Verify | 6209VV | 6209LLB | 6209-2RU Verify | 6209-2NKE Verify |
| Shields both sides, C3 | 6209-2Z/C3 | 6209-2ZR-C3 | 6209ZZC3 | 6209ZZC3 | 6209ZZC3 | 6209ZZE C3 Verify |
Same size, different bearing
These share the 45 × 85 × 19 mm envelope but carry load differently. They aren't drop-in swaps.