NJ 18/1180 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 | 1 180 mm | Bore diameter |
|---|---|---|
| D | 1 420 mm | Outside diameter |
| B | 106 mm | Width |
| d1 | ≈ 1 263 mm | Shoulder diameter of inner ring |
| D1 | ≈ 1 338 mm | Shoulder diameter of outer ring |
| F | 1 242 mm | Raceway diameter of inner ring |
| r1,2 | min. 6 mm | Chamfer dimension |
| s | max. 12 mm | Permissible axial displacement |
Abutment dimensions
| da | min. 1 203 mm | Diameter of spacer sleeve |
|---|---|---|
| da | max. 1 228 mm | Diameter of spacer sleeve |
| db | min. 1 270 mm | Diameter of shaft abutment |
| Da | max. 1 397 mm | Diameter of housing abutment |
| ra | max. 5 mm | Radius of fillet |
Calculation data
| Basic dynamic load rating | C | 3 030 kN |
|---|---|---|
| Basic static load rating | C0 | 7 800 kN |
| Fatigue load limit | Pu | 455 kN |
| Reference speed | 320 r/min | |
| Limiting speed | 400 r/min | |
| Minimum load factor | kr | 0.05 |
| Limiting value | e | 0.2 |
| Calculation factor | Y | 0.6 |
Mass
| Mass | 350 kg |
Tolerances and clearances
Bearing interfaces
