Cylindrical Roller Bearing NJ308
- 50 Pieces
- China
- 7 days
- 200000 Pieces per Week
It is widely used in the fields of mechanical equipment, electric power, iron and steel, metallurgy, petroleum, chemical industry, machine tool, textile, automobile, motor, precision instrument, mining machinery, construction machinery, engineering machinery, railway and so on.
Technical specification
DIMENSIONS
| d | 40 mm | |
|---|---|---|
| D | 90 mm | |
| B | 23 mm | |
| d1 | ≈ 57.5 mm | |
| D1 | ≈ 75.18 mm | |
| F | 52 mm | |
| r1,2 | min. 1.5 mm | |
| r3,4 | min. 1.5 mm | |
| s | max. 1.4 mm |
This combination allows the bearing used in paired bearings to vary in cross section height within very small tolerances The precondition of tolerance reduction is to narrow the tolerance zone. The following combinations are available: Two bearing groups (type suffix DR) Three bearing groups (type suffix TR) Four bearing groups (model suffix QR)ABUTMENT DIMENSIONS
da da db Da ra CALCULATION DATA
Basic dynamic load rating C Basic static load rating C0 Fatigue load limit Pu Reference speed Limiting speed Calculation factor kr Limiting value e Axial load factor Y MASS
Mass bearing Design and variation
