Description
| Bore type | Cylindrical |
Dimensions
| d | 85 mm | Bore diameter |
|---|---|---|
| D | 180 mm | Outside diameter |
| B | 60 mm | Width |
| d2 | ≈ 108 mm | Shoulder diameter of inner ring |
| D1 | ≈ 154 mm | Shoulder/recess diameter of outer ring |
| b | 8.3 mm | Width of lubrication groove |
| K | 4.5 mm | Diameter of lubrication hole |
| r1,2 | min. 3 mm | Chamfer dimension |
| Normal, bore to P5 and outside diameter P6 | ISO tolerance class for dimensions |
Abutment dimensions
| da | min. 99 mm | Diameter of shaft abutment |
|---|---|---|
| Da | max. 166 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 | 577 kN |
| Basic static load rating | C0 | 620 kN |
| Fatigue load limit | Pu | 61 kN |
| Reference speed | 2 800 r/min | |
| Limiting speed | 3 800 r/min | |
| Limiting value | e | 0.33 |
| Calculation factor | Y1 | 2 |
| Calculation factor | Y2 | 3 |
| Calculation factor | Y0 | 2 |
| Permissible rotational acceleration for oil lubrication | 726 m/s² | |
| Permissible linear acceleration for oil lubrication | 206 m/s² |
Radial internal clearance
| Minimum initial clearance | 135 µm |
| Maximum initial clearance | 180 µm |
Tolerances and clearances
General bearing specifications
- Tolerances: Normal, P6, P5,
tapered bore 1:12, tapered bore 1:30 - Radial internal clearance: cylindrical bore, tapered bore
Bearing interfaces
- Seat tolerances for standard conditions
- Tolerances and resultant fit
Spherical roller bearings can accommodate heavy loads in both directions. They are self-aligning and accommodate misalignment and shaft deflections, with virtually no increase in friction or temperature. This bearing design offers excellent performance in many types of vibrating machinery. The design includes features to facilitate relubrication. The bearings can be used in a modular system, including housings, sleeves and nuts.
- Accommodate misalignment
- High load carrying capacity
- Accommodate very high vibration levels
- Low friction and long service life
- Increased wear resistance
