Description
Dimensions
| d | 130 mm | Bore diameter |
|---|---|---|
| D | 280 mm | Outside diameter |
| B | 58 mm | Width |
| d1 | ≈ 181 mm | Shoulder diameter of inner ring |
| E | 247 mm | Raceway diameter of outer ring |
| r1,2 | min. 4 mm | Chamfer dimension |
| r3,4 | min. 4 mm | Chamfer dimension |
| s | max. 3.7 mm | Permissible axial displacement |
Abutment dimensions
| da | min. 147 mm | Diameter of spacer sleeve |
|---|---|---|
| da | max. 243 mm | Diameter of spacer sleeve |
| Da | min. 251 mm | Diameter of housing abutment |
| Da | max. 262 mm | Diameter of housing abutment |
| ra | max. 3 mm | Radius of fillet |
| rb | max. 3 mm | Radius of fillet |
Calculation data
| NR performance class | NR Explorer | |
| Basic dynamic load rating | C | 720 kN |
| Basic static load rating | C0 | 750 kN |
| Fatigue load limit | Pu | 81.5 kN |
| Reference speed | 2 400 r/min | |
| Limiting speed | 3 000 r/min | |
| Minimum load factor | kr | 0.12 |
| 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 inner ring and no flanges on the outer ring, N design bearings can accommodate axial displacement in both directions. 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
- Accommodate axial displacement in both directions
- Separable design
