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 |
360 mm
|
Bore diameter |
|---|---|---|
| D |
510 mm
|
Outside diameter |
| B |
380 mm
|
Total bearing width over inner rings |
| T |
380 mm
|
Total bearing width over outer rings |
| d1 |
≈ 393 mm
|
Abutment diameter shaft |
| D1 |
≈ 454 mm
|
Abutment diameter housing |
| r1,2 |
min. 2 mm
|
Chamfer dimension inner ring |
| r3,4 |
min. 6 mm
|
Outer ring radius (chamfer) |
| Basic dynamic load rating | C |
5 610 kN
|
|---|---|---|
| Basic static load rating | C0 |
14 300 kN
|
| Fatigue load limit | Pu |
1 120 kN
|
| Comparative radial load rating | CF |
1 500 kN
|
| Comparative axial load rating | CFa |
238 kN
|
| Thrust factor | K |
1.81
|
| Limiting value | e |
0.33
|
| Calculation factor | Y1 |
2
|
| Calculation factor | Y2 |
3
|
| Calculation factor | Y0 |
2
|
| Mass bearing |
255 kg
|
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