BEARINGDEXBall, inch R series
R18 bearing
1-1/8 inch bore, 2-1/8 inch outside diameter, 1/2 inch width (28.575 × 53.975 × 12.7 mm).
Dimensions
| mm | inch | |
|---|---|---|
| Bore d | 28.575 | 1.1250 (1-1/8) |
| Outside diameter D | 53.975 | 2.1250 (2-1/8) |
| Width B | 12.7 | 0.5000 (1/2) |
Quick numbers
| Pitch diameter dm | 41.3 mm |
| Section height (D − d)/2 | 12.7 mm |
| n·dm at 1,800 rpm | 74,295 |
| n·dm at 3,600 rpm | 148,590 |
Compare against the maker's limiting speed. Speed calculator · L10 life
What the number means
RInch-dimension radial ball bearing
18Bore in sixteenths of an inch: 18/16 = 1-1/8 in