Description
Dimensions
| d | 160 mm | Bore diameter |
|---|---|---|
| D | 240 mm | Outside diameter |
| B | 38 mm | Width |
| d1 | ≈ 188 mm | Shoulder diameter of inner ring |
| D1 | ≈ 210.8 mm | Shoulder diameter of outer ring |
| F | 180 mm | Raceway diameter of inner ring |
| r1,2 | min. 2.1 mm | Chamfer dimension |
| r3,4 | min. 1.5 mm | Chamfer dimension |
| s | max. 5.2 mm | Permissible axial displacement |
Abutment dimensions
| da | min. 167 mm | Diameter of spacer sleeve |
|---|---|---|
| da | max. 177 mm | Diameter of spacer sleeve |
| db | min. 183 mm | Diameter of shaft abutment |
| Da | max. 230 mm | Diameter of housing abutment |
| ra | max. 2 mm | Radius of fillet |
Calculation data
| NR performance class | NR Explorer | |
| Basic dynamic load rating | C | 265 kN |
| Basic static load rating | C0 | 325 kN |
| Fatigue load limit | Pu | 35.5 kN |
| Reference speed | 3 000 r/min | |
| Limiting speed | 4 800 r/min | |
| Minimum load factor | kr | 0.15 |
| Limiting value | e | 0.2 |
| Calculation factor | Y | 0.6 |
Tolerances and clearances
General bearing specifications
- Tolerances: Normal (), P6, Normal (inch)
- Radial internal clearance: cylindrical bore, tapered bore
- Axial internal clearance: NUP, NJ + HJ
Bearing interfaces
- Seat tolerances for standard conditions
- Tolerances and resultant fit
Single 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
