BEARINGDEXSelf-aligning ball
1301 bearing
12 mm bore, 37 mm outside diameter, 12 mm width (0.4724 × 1.4567 × 0.4724 in).
Dimensions
| mm | inch | |
|---|---|---|
| Bore d | 12 | 0.4724 |
| Outside diameter D | 37 | 1.4567 |
| Width B | 12 | 0.4724 |
Quick numbers
| Pitch diameter dm | 24.5 mm |
| Section height (D − d)/2 | 12.5 mm |
| n·dm at 1,800 rpm | 44,100 |
| n·dm at 3,600 rpm | 88,200 |
Compare against the maker's limiting speed. Speed calculator · L10 life
What the number means
1Self-aligning ball
3Diameter series 3: medium. Width series 0 is implied and left off.
01Bore code 01 is a fixed code for 12 mm
Same size, different bearing
These share the 12 × 37 × 12 mm envelope but carry load differently. They aren't drop-in swaps.