BEARINGDEXDeep groove ball, miniature
623 bearing
3 mm bore, 10 mm outside diameter, 4 mm width (0.1181 × 0.3937 × 0.1575 in).
Dimensions
| mm | inch | |
|---|---|---|
| Bore d | 3 | 0.1181 |
| Outside diameter D | 10 | 0.3937 |
| Width B | 4 | 0.1575 |
Quick numbers
| Pitch diameter dm | 6.5 mm |
| Section height (D − d)/2 | 3.5 mm |
| n·dm at 1,800 rpm | 11,700 |
| n·dm at 3,600 rpm | 23,400 |
Compare against the maker's limiting speed. Speed calculator · L10 life
What the number means
6Deep groove ball
2Diameter series 2: light
3Single digit: bore is 3 mm, written directly
How each brand writes it
Same bearing, every maker's notation| Version | SKF | FAG | NSK | NTN | Koyo | NACHI |
|---|---|---|---|---|---|---|
| Open | 623 | 623 | 623 | 623 | 623 | 623 |
| Shields both sides | 623-2Z | 623-2ZR | 623ZZ | 623ZZ | 623ZZ | 623ZZE |
| Contact seals both sides | 623-2RSH | 623-2RSR | 623DDU | 623LLU | 623-2RS | 623-2NSE |
| Contact seals both sides, C3 | 623-2RSH/C3 | 623-2RSR-C3 | 623DDUC3 | 623LLUC3 | 623-2RSC3 | 623-2NSE C3 Verify |
| Non-contact seals both sides | 623-2RSL | 623-2BRS Verify | 623VV | 623LLB | 623-2RU Verify | 623-2NKE Verify |
| Shields both sides, C3 | 623-2Z/C3 | 623-2ZR-C3 | 623ZZC3 | 623ZZC3 | 623ZZC3 | 623ZZE C3 Verify |