NJ 1068 MA
Single row cylindrical roller bearing, NJ designSingle row cylindrical roller bearings are designed to accommodate high radial loads in combination with high speeds. Having two integral flanges on the outer ring and one on the inner ring, NJ design bearings can accommodate axial displacement in one direction. An important feature is the separable design, which facilitates mounting and enables the bearing components to be interchanged.
- High radial load carrying capacity
- Low friction
- Long service life
- Locate the shaft axially in one direction
- Separable design
Description
Dimensions
| d | 340 mm | Bore diameter |
|---|---|---|
| D | 520 mm | Outside diameter |
| B | 82 mm | Width |
| d1 | ≈ 403 mm | Shoulder diameter of inner ring |
| D1 | ≈ 455 mm | Shoulder diameter of outer ring |
| F | 385 mm | Raceway diameter of inner ring |
| r1,2 | min. 5 mm | Chamfer dimension |
| s | max. 6 mm | Permissible axial displacement |
Abutment dimensions
| da | min. 358 mm | Diameter of spacer sleeve |
|---|---|---|
| da | max. 380 mm | Diameter of spacer sleeve |
| db | min. 408 mm | Diameter of shaft abutment |
| Da | max. 502 mm | Diameter of housing abutment |
| ra | max. 4 mm | Radius of fillet |
Calculation data
| Basic dynamic load rating | C | 1 080 kN |
|---|---|---|
| Basic static load rating | C0 | 1 760 kN |
| Fatigue load limit | Pu | 156 kN |
| Reference speed | 1 300 r/min | |
| Limiting speed | 1 700 r/min | |
| Minimum load factor | kr | 0.15 |
| Limiting value | e | 0.2 |
| Calculation factor | Y | 0.6 |
Mass
| Mass | 65.5 kg |
Tolerances and clearances
Bearing interfaces
