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. AKMI manufactures four-row tapered roller bearings in TQO and TQI designs, in many variants and with different features.
| Design variant/feature | TQI |
| Bore type | Cylindrical |
| d | 431.8 mm | Bore diameter |
|---|---|---|
| D | 571.5 mm | Outside diameter |
| B | 366.713 mm | Total bearing width over inner rings |
| T | 320.675 mm | Total bearing width over outer rings |
| d1 | ≈ 499 mm | Abutment diameter shaft |
| D1 | ≈ 550 mm | Abutment diameter housing |
| r1,2 | min. 1.5 mm | Inner ring radius (chamfer) |
| r3,4 | min. 1.5 mm | Chamfer dimension outer ring |
| Basic dynamic load rating | C | 4 950 kN |
|---|---|---|
| Basic static load rating | C0 | 14 000 kN |
| Fatigue load limit | Pu | 1 060 kN |
| Comparative radial load rating | CF | 1 290 kN |
| Comparative axial load rating | CFa | 282 kN |
| Thrust factor | K | 1.33 |
| Limiting value | e | 0.44 |
| Calculation factor | Y1 | 1.5 |
| Calculation factor | Y2 | 2.3 |
| Calculation factor | Y0 | 1.4 |
General bearing specifications
Bearing interfaces
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