BEARINGDEXSelf-aligning ball
1210 bearing
50 mm bore, 90 mm outside diameter, 20 mm width (1.9685 × 3.5433 × 0.7874 in).
Dimensions
| mm | inch | |
|---|---|---|
| Bore d | 50 | 1.9685 |
| Outside diameter D | 90 | 3.5433 |
| Width B | 20 | 0.7874 |
Quick numbers
| Pitch diameter dm | 70.0 mm |
| Section height (D − d)/2 | 20.0 mm |
| n·dm at 1,800 rpm | 126,000 |
| n·dm at 3,600 rpm | 252,000 |
Compare against the maker's limiting speed. Speed calculator · L10 life
What the number means
1Self-aligning ball
2Diameter series 2: light. Width series 0 is implied and left off.
10Bore code 10 × 5 = 50 mm
Same size, different bearing
These share the 50 × 90 × 20 mm envelope but carry load differently. They aren't drop-in swaps.