Description
| Dimension series | 3DB |
Dimensions
| d | 40 mm | Bore diameter |
|---|---|---|
| D | 80 mm | Outside diameter |
| T | 19.75 mm | Total width |
| d1 | ≈ 57.55 mm | Shoulder diameter of inner ring |
| D1 | 85 mm | Diameter of flange |
| B | 18 mm | Width of inner ring |
| C | 16 mm | Width of outer ring |
| C1 | 4 mm | Width of flange |
| r1,2 | min. 1.5 mm | Chamfer dimension of inner ring |
| r3,4 | min. 1.5 mm | Chamfer dimension of outer ring |
| a | 16.094 mm | Distance side face to pressure point |
Abutment dimensions
| da | max. 49 mm | Diameter of shaft abutment |
|---|---|---|
| db | min. 48.5 mm | Diameter of shaft abutment |
| ra | max. 1.5 mm | Radius of shaft fillet |
Calculation data
| NR performance class | NR Explorer | |
| Basic dynamic load rating | C | 75.8 kN |
| Basic static load rating | C0 | 68 kN |
| Fatigue load limit | Pu | 7.65 kN |
| Reference speed | 7 000 r/min | |
| Limiting speed | 8 500 r/min | |
| Limiting value | e | 0.37 |
| Calculation factor | Y | 1.6 |
| Calculation factor | Y0 | 0.9 |
Tolerances and clearances
General bearing specifications
- Tolerances:
bearings: Normal and CL7C, CLN
inch bearings: Normal and CL, deviating width
Bearing interfaces
- Seat tolerances for standard conditions
- Tolerances and resultant fit
Single row tapered roller bearings with flanged outer rings are easy to locate axially in the housing. Because housing shoulders are not required, the housing bore can be manufactured more easily and cost-effectively. The bearings can accommodate combined radial and axial loads and provide low friction during operation. By combining two tapered roller bearings, a rigid bearing arrangement can be achieved.
- High radial and axial load carrying capacity
- Accommodate axial loads in one direction
- Low friction and long service life
- Separable and interchangeable components
- Flange on the outer ring for easy location in the housing
