BEARINGDEXBall, inch R series
R4 bearing
1/4 inch bore, 5/8 inch outside diameter, 0.196 inch width (6.35 × 15.875 × 4.978 mm).
Dimensions
| mm | inch | |
|---|---|---|
| Bore d | 6.35 | 0.2500 (1/4) |
| Outside diameter D | 15.875 | 0.6250 (5/8) |
| Width B | 4.978 | 0.1960 |
Quick numbers
| Pitch diameter dm | 11.1 mm |
| Section height (D − d)/2 | 4.8 mm |
| n·dm at 1,800 rpm | 20,003 |
| n·dm at 3,600 rpm | 40,005 |
Compare against the maker's limiting speed. Speed calculator · L10 life
What the number means
RInch-dimension radial ball bearing
4Bore in sixteenths of an inch: 4/16 = 1/4 in