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.
| SKF performance class |
SKF Explorer
|
| Design variant/feature |
TQOS/GW
|
| Bore type |
Cylindrical with helical groove
|
| d |
279.4 mm
|
Bore diameter |
|---|---|---|
| D |
393.7 mm
|
Outside diameter |
| B |
269.88 mm
|
Total bearing width over inner rings |
| T |
269.88 mm
|
Total bearing width over outer rings |
| r3,4 |
min. 4 mm
|
Outer ring radius (chamfer) |
| Basic dynamic load rating | C |
3 400 kN
|
|---|---|---|
| Basic static load rating | C0 |
5 850 kN
|
| Fatigue load limit | Pu |
520 kN
|
| Comparative radial load rating | CF |
830 kN
|
| Comparative axial load rating | CFa |
152 kN
|
| Thrust factor | K |
1.55
|
| Limiting value | e |
0.37
|
| Calculation factor | Y1 |
1.8
|
| Calculation factor | Y2 |
2.7
|
| Calculation factor | Y0 |
1.8
|
| Mass bearing |
94.9 kg
|
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