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 |
TQON/GW
|
| Bore type |
Cylindrical with helical groove
|
| d |
489.026 mm
|
Bore diameter |
|---|---|---|
| D |
634.873 mm
|
Outside diameter |
| B |
320.675 mm
|
Total bearing width over inner rings |
| T |
320.675 mm
|
Total bearing width over outer rings |
| d1 |
≈ 522 mm
|
Abutment diameter shaft |
| D1 |
≈ 584 mm
|
Abutment diameter housing |
| r3,4 |
min. 3.3 mm
|
Outer ring radius (chamfer) |
| Basic dynamic load rating | C |
6 300 kN
|
|---|---|---|
| Basic static load rating | C0 |
14 600 kN
|
| Fatigue load limit | Pu |
1 100 kN
|
| Comparative radial load rating | CF |
1 530 kN
|
| Comparative axial load rating | CFa |
259 kN
|
| Thrust factor | K |
1.7
|
| Limiting value | e |
0.35
|
| Calculation factor | Y1 |
1.9
|
| Calculation factor | Y2 |
2.9
|
| Calculation factor | Y0 |
1.8
|
| Mass bearing |
265 kg
|
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