31328 X
Single row tapered roller bearingSingle row tapered roller bearings are designed to accommodate combined radial and axial loads and provide low friction during operation. The inner ring, with rollers and cage, can be mounted separately from the outer ring. These separable and interchangeable components facilitate mounting, dismounting and maintenance. By mounting one single row tapered roller bearing against another and applying a preload, a rigid bearing application 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
Description
| Dimension series | 7GB |
Dimensions
| d | 140 mm | Bore diameter |
|---|---|---|
| D | 300 mm | Outside diameter |
| T | 77 mm | Total width |
| d1 | ≈ 220.275 mm | Shoulder diameter of inner ring |
| B | 70 mm | Width of inner ring |
| C | 47 mm | Width of outer ring |
| r1,2 | min. 5 mm | Chamfer dimension of inner ring |
| r3,4 | min. 4 mm | Chamfer dimension of outer ring |
| a | 90.1 mm | Distance side face to pressure point |
Abutment dimensions
| da | max. 169 mm | Diameter of shaft abutment |
|---|---|---|
| db | min. 159.5 mm | Diameter of shaft abutment |
| Da | min. 235 mm | Diameter of housing abutment |
| Da | max. 284 mm | Diameter of housing abutment |
| Db | min. 280 mm | Diameter of housing abutment |
| Ca | min. 9 mm | Minimum width of space required in housing on large side face |
| Cb | min. 30 mm | Minimum width of space required in housing on small side face |
| ra | max. 5 mm | Radius of shaft fillet |
| rb | max. 4 mm | Radius of housing fillet |
Calculation data
| Basic dynamic load rating | C | 693 kN |
|---|---|---|
| Basic static load rating | C0 | 900 kN |
| Fatigue load limit | Pu | 90 kN |
| Reference speed | 1 500 r/min | |
| Limiting speed | 2 200 r/min | |
| Limiting value | e | 0.83 |
| Calculation factor | Y | 0.72 |
| Calculation factor | Y0 | 0.4 |
Mass
| Mass | 22.6 kg |
Tolerances and clearances
Bearing data
- Tolerances:
metric bearings: Normal and CL7C, CLN
inch bearings: Normal and CL, deviating width
Bearing interfaces
