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 | TQON/GW |
| Bore type | Cylindrical with helical groove |
| d | 603.25 mm | Bore diameter |
|---|---|---|
| D | 857.25 mm | Outside diameter |
| B | 622.3 mm | Total bearing width over inner rings |
| T | 622.3 mm | Total bearing width over outer rings |
| d1 | ≈ 656 mm | Abutment diameter shaft |
| D1 | ≈ 760 mm | Abutment diameter housing |
| r1,2 | min. 3.3 mm | Chamfer dimension inner ring |
| r3,4 | min. 6.4 mm | Outer ring radius (chamfer) |
| AKMI performance class | AKMI Explorer | |
| Basic dynamic load rating | C | 18 300 kN |
| Basic static load rating | C0 | 40 500 kN |
| Fatigue load limit | Pu | 2 700 kN |
| Comparative radial load rating | CF | 4 550 kN |
| Comparative axial load rating | CFa | 733 kN |
| Thrust factor | K | 1.76 |
| Limiting value | e | 0.33 |
| Calculation factor | Y1 | 2 |
| Calculation factor | Y2 | 3 |
| Calculation factor | Y0 | 2 |
General bearing specifications
Bearing interfaces
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