Description
Dimensions
| d | 35 mm | Bore diameter |
|---|---|---|
| D | 80 mm | Outside diameter |
| B | 21 mm | Width |
| d1 | ≈ 51 mm | Shoulder diameter of inner ring |
| D1 | ≈ 65.8 mm | Shoulder diameter of outer ring |
| E | 70.2 mm | Raceway diameter of outer ring |
| r1,2 | min. 1.5 mm | Chamfer dimension |
| r3,4 | min. 1.1 mm | Chamfer dimension |
| s | max. 1.2 mm | Permissible axial displacement |
Abutment dimensions
| da | min. 43 mm | Diameter of spacer sleeve |
|---|---|---|
| Da | max. 72.2 mm | Diameter of housing abutment |
| Db | min. 71.8 mm | Diameter of housing abutment |
| ra | max. 1.5 mm | Radius of fillet |
Calculation data
| NR performance class | NR Explorer | |
| Basic dynamic load rating | C | 75 kN |
| Basic static load rating | C0 | 63 kN |
| Fatigue load limit | Pu | 8.15 kN |
| Reference speed | 9 500 r/min | |
| Limiting speed | 11 000 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 to very high radial loads in combination with medium to high speeds. The NR assortment includes many designs and variants, such as standard, full complement and high capacity bearings. Depending on the configuration of the outer and inner rings, the bearings are available in locating as well as non-locating designs.
- High to very high radial load carrying capacity
- Low friction
- Long service life
