BEARINGDEXCylindrical roller, NU
NU318 bearing
90 mm bore, 190 mm outside diameter, 43 mm width (3.5433 × 7.4803 × 1.6929 in).
Dimensions
| mm | inch | |
|---|---|---|
| Bore d | 90 | 3.5433 |
| Outside diameter D | 190 | 7.4803 |
| Width B | 43 | 1.6929 |
Quick numbers
| Pitch diameter dm | 140.0 mm |
| Section height (D − d)/2 | 50.0 mm |
| n·dm at 1,800 rpm | 252,000 |
| n·dm at 3,600 rpm | 504,000 |
Compare against the maker's limiting speed. Speed calculator · L10 life
What the number means
NUCylindrical roller. Ribs on the outer ring only, so the shaft can float axially.
3Diameter series 3: medium
18Bore code 18 × 5 = 90 mm
Same size, different bearing
These share the 90 × 190 × 43 mm envelope but carry load differently. They aren't drop-in swaps.