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 |
TQOS/GWISI
|
| Bore type |
Cylindrical with helical groove
|
| d |
409.575 mm
|
Bore diameter |
|---|---|---|
| D |
546.1 mm
|
Outside diameter |
| B |
334.962 mm
|
Total bearing width over inner rings |
| T |
334.962 mm
|
Total bearing width over outer rings |
| d1 |
≈ 434 mm
|
Abutment diameter shaft |
| D1 |
≈ 498 mm
|
Abutment diameter housing |
| r1,2 |
min. 1 mm
|
Chamfer dimension inner ring |
| r3,4 |
min. 6.4 mm
|
Outer ring radius (chamfer) |
| Basic dynamic load rating | C |
4 840 kN
|
|---|---|---|
| Basic static load rating | C0 |
12 000 kN
|
| Fatigue load limit | Pu |
930 kN
|
| Comparative radial load rating | CF |
1 200 kN
|
| Comparative axial load rating | CFa |
231 kN
|
| Thrust factor | K |
1.47
|
| Limiting value | e |
0.4
|
| Calculation factor | Y1 |
1.7
|
| Calculation factor | Y2 |
2.5
|
| Calculation factor | Y0 |
1.6
|
| Mass bearing |
210 kg
|
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