BEARINGDEXCylindrical roller, NJ
NJ316 bearing
80 mm bore, 170 mm outside diameter, 39 mm width (3.1496 × 6.6929 × 1.5354 in).
Dimensions
| mm | inch | |
|---|---|---|
| Bore d | 80 | 3.1496 |
| Outside diameter D | 170 | 6.6929 |
| Width B | 39 | 1.5354 |
Quick numbers
| Pitch diameter dm | 125.0 mm |
| Section height (D − d)/2 | 45.0 mm |
| n·dm at 1,800 rpm | 225,000 |
| n·dm at 3,600 rpm | 450,000 |
Compare against the maker's limiting speed. Speed calculator · L10 life
What the number means
NJCylindrical roller. One rib on the inner ring locates the shaft in one direction.
3Diameter series 3: medium
16Bore code 16 × 5 = 80 mm
Same size, different bearing
These share the 80 × 170 × 39 mm envelope but carry load differently. They aren't drop-in swaps.