BEARINGDEXCylindrical roller, NUP
NUP203 bearing
17 mm bore, 40 mm outside diameter, 12 mm width (0.6693 × 1.5748 × 0.4724 in).
Dimensions
| mm | inch | |
|---|---|---|
| Bore d | 17 | 0.6693 |
| Outside diameter D | 40 | 1.5748 |
| Width B | 12 | 0.4724 |
Quick numbers
| Pitch diameter dm | 28.5 mm |
| Section height (D − d)/2 | 11.5 mm |
| n·dm at 1,800 rpm | 51,300 |
| n·dm at 3,600 rpm | 102,600 |
Compare against the maker's limiting speed. Speed calculator · L10 life
What the number means
NUPCylindrical roller. A rib plus a loose rib on the inner ring locates the shaft both ways.
2Diameter series 2: light
03Bore code 03 is a fixed code for 17 mm
Same size, different bearing
These share the 17 × 40 × 12 mm envelope but carry load differently. They aren't drop-in swaps.