Description
| Design variant/feature | TQOSN/GW |
| Bore type | Cylindrical with helical groove |
Dimensions
| d | 384.175 mm | Bore diameter |
|---|---|---|
| D | 546.1 mm | Outside diameter |
| B | 400.05 mm | Total bearing width over inner rings |
| T | 400.05 mm | Total bearing width over outer rings |
| d1 | ≈ 416 mm | Abutment diameter shaft |
| D1 | ≈ 496 mm | Abutment diameter housing |
| r1,2 | min. 3.3 mm | Chamfer dimension inner ring |
| r3,4 | min. 3 mm | Outer ring radius (chamfer) |
Calculation data
| Basic dynamic load rating | C | 6 160 kN |
|---|---|---|
| Basic static load rating | C0 | 15 000 kN |
| Fatigue load limit | Pu | 1 140 kN |
| Comparative radial load rating | CF | 1 500 kN |
| Comparative axial load rating | CFa | 256 kN |
| Thrust factor | K | 1.68 |
| Limiting value | e | 0.35 |
| Calculation factor | Y1 | 1.9 |
| Calculation factor | Y2 | 2.9 |
| Calculation factor | Y0 | 1.8 |
Tolerances and clearances
General bearing specifications
- Tolerances: bearings (Normal and CL7C), inch bearings
- Internal clearance
Bearing interfaces
- Seat tolerances for standard conditions
- Tolerances and resultant fit
Four-row tapered roller bearings can accommodate combined heavy radial and axial loads at low to moderate speeds. They are used almost exclusively in work roll applications such as rolling mills. NR manufactures four-row tapered roller bearings in TQO and TQI designs, in many variants and with different features.
- Very high radial load carrying capacity
- Accommodate axial loads in both directions
- Axial space-saving solution for roll necks
- Low friction
- Long service life
