BEARINGDEXTapered roller
30304 bearing
20 mm bore, 52 mm outside diameter, 16.25 mm width (0.7874 × 2.0472 × 0.6398 in).
Dimensions
| mm | inch | |
|---|---|---|
| Bore d | 20 | 0.7874 |
| Outside diameter D | 52 | 2.0472 |
| Width T | 16.25 | 0.6398 |
Quick numbers
| Pitch diameter dm | 36.0 mm |
| Section height (D − d)/2 | 16.0 mm |
| n·dm at 1,800 rpm | 64,800 |
| n·dm at 3,600 rpm | 129,600 |
Compare against the maker's limiting speed. Speed calculator · L10 life
What the number means
3Tapered roller
03Dimension series 03: width 0, diameter 3 (medium)
04Bore code 04 × 5 = 20 mm