Description
Dimensions
| d | 105 mm | Bore diameter |
|---|---|---|
| D | 225 mm | Outside diameter |
| B | 49 mm | Width |
| d1 | ≈ 145 mm | Shoulder diameter of inner ring |
| D1 | ≈ 189 mm | Shoulder diameter of outer ring |
| F | 133 mm | Raceway diameter of inner ring |
| r1,2 | min. 3 mm | Chamfer dimension |
| r3,4 | min. 3 mm | Chamfer dimension |
| s | max. 3.4 mm | Permissible axial displacement |
Abutment dimensions
| da | min. 119 mm | Diameter of spacer sleeve |
|---|---|---|
| da | max. 129 mm | Diameter of spacer sleeve |
| db | min. 148 mm | Diameter of shaft abutment |
| Da | max. 209.4 mm | Diameter of housing abutment |
| ra | max. 2.5 mm | Radius of fillet |
Calculation data
| NR performance class | NR Explorer | |
| Basic dynamic load rating | C | 500 kN |
| Basic static load rating | C0 | 500 kN |
| Fatigue load limit | Pu | 57 kN |
| Reference speed | 3 200 r/min | |
| Limiting speed | 3 800 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
