NJ 18/560 ECMA
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 | 560 mm | Bore diameter |
|---|---|---|
| D | 680 mm | Outside diameter |
| B | 56 mm | Width |
| d1 | ≈ 601 mm | Shoulder diameter of inner ring |
| D1 | ≈ 639 mm | Shoulder diameter of outer ring |
| F | 591 mm | Raceway diameter of inner ring |
| r1,2 | min. 3 mm | Chamfer dimension |
| s | max. 6.8 mm | Permissible axial displacement |
Abutment dimensions
| da | min. 573 mm | Diameter of spacer sleeve |
|---|---|---|
| da | max. 584 mm | Diameter of spacer sleeve |
| db | min. 606 mm | Diameter of shaft abutment |
| Da | max. 667 mm | Diameter of housing abutment |
| ra | max. 2.5 mm | Radius of fillet |
Calculation data
| Basic dynamic load rating | C | 897 kN |
|---|---|---|
| Basic static load rating | C0 | 2 040 kN |
| Fatigue load limit | Pu | 150 kN |
| Reference speed | 850 r/min | |
| Limiting speed | 1 100 r/min | |
| Minimum load factor | kr | 0.11 |
| Limiting value | e | 0.2 |
| Calculation factor | Y | 0.6 |
Mass
| Mass | 45 kg |
Tolerances and clearances
Bearing interfaces
