BEARINGDEXDeep groove ball
6204 bearing
20 mm bore, 47 mm outside diameter, 14 mm width (0.7874 × 1.8504 × 0.5512 in).
Dimensions
| mm | inch | |
|---|---|---|
| Bore d | 20 | 0.7874 |
| Outside diameter D | 47 | 1.8504 |
| Width B | 14 | 0.5512 |
Quick numbers
| Pitch diameter dm | 33.5 mm |
| Section height (D − d)/2 | 13.5 mm |
| n·dm at 1,800 rpm | 60,300 |
| n·dm at 3,600 rpm | 120,600 |
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.
04Bore code 04 × 5 = 20 mm
How each brand writes it
Same bearing, every maker's notation| Version | SKF | FAG | NSK | NTN | Koyo | NACHI |
|---|---|---|---|---|---|---|
| Open | 6204 | 6204 | 6204 | 6204 | 6204 | 6204 |
| Shields both sides | 6204-2Z | 6204-2ZR | 6204ZZ | 6204ZZ | 6204ZZ | 6204ZZE |
| Contact seals both sides | 6204-2RSH | 6204-2RSR | 6204DDU | 6204LLU | 6204-2RS | 6204-2NSE |
| Contact seals both sides, C3 | 6204-2RSH/C3 | 6204-2RSR-C3 | 6204DDUC3 | 6204LLUC3 | 6204-2RSC3 | 6204-2NSE C3 Verify |
| Non-contact seals both sides | 6204-2RSL | 6204-2BRS Verify | 6204VV | 6204LLB | 6204-2RU Verify | 6204-2NKE Verify |
| Shields both sides, C3 | 6204-2Z/C3 | 6204-2ZR-C3 | 6204ZZC3 | 6204ZZC3 | 6204ZZC3 | 6204ZZE C3 Verify |
Same size, different bearing
These share the 20 × 47 × 14 mm envelope but carry load differently. They aren't drop-in swaps.