Description
Dimensions
| d | 140 mm | Bore diameter |
|---|---|---|
| D | 300 mm | Outside diameter |
| B | 62 mm | Width |
| d1 | ≈ 195 mm | Shoulder diameter of inner ring |
| D1 | ≈ 250.6 mm | Shoulder diameter of outer ring |
| F | 180 mm | Raceway diameter of inner 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. 157 mm | Diameter of spacer sleeve |
|---|---|---|
| da | max. 175 mm | Diameter of spacer sleeve |
| db | min. 199 mm | Diameter of shaft abutment |
| Da | max. 282.5 mm | Diameter of housing abutment |
| ra | max. 3 mm | Radius of fillet |
Calculation data
| NR performance class | NR Explorer | |
| Basic dynamic load rating | C | 780 kN |
| Basic static load rating | C0 | 830 kN |
| Fatigue load limit | Pu | 88 kN |
| Reference speed | 2 400 r/min | |
| Limiting speed | 2 800 r/min | |
| Minimum load factor | kr | 0.15 |
| Limiting value | e | 0.2 |
| Calculation factor | Y | 0.6 |
Associated products
| Angle ring | HJ 328 EC |
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
