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. SKF manufactures four-row tapered roller bearings in TQO and TQI designs, in many variants and with different features.
| Design variant/feature |
TQO/GWI
|
| Bore type |
Cylindrical with helical groove
|
| d |
660.4 mm
|
Bore diameter |
|---|---|---|
| D |
812.8 mm
|
Outside diameter |
| B |
365.125 mm
|
Total bearing width over inner rings |
| T |
365.125 mm
|
Total bearing width over outer rings |
| d1 |
≈ 698 mm
|
Abutment diameter shaft |
| D1 |
≈ 756 mm
|
Abutment diameter housing |
| r1,2 |
min. 3.3 mm
|
Chamfer dimension inner ring |
| r3,4 |
min. 6.4 mm
|
Outer ring radius (chamfer) |
| Basic dynamic load rating | C |
7 210 kN
|
|---|---|---|
| Basic static load rating | C0 |
22 400 kN
|
| Fatigue load limit | Pu |
1 530 kN
|
| Comparative radial load rating | CF |
1 760 kN
|
| Comparative axial load rating | CFa |
284 kN
|
| Thrust factor | K |
1.76
|
| Limiting value | e |
0.33
|
| Calculation factor | Y1 |
2
|
| Calculation factor | Y2 |
3
|
| Calculation factor | Y0 |
2
|
| Mass bearing |
420 kg
|
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