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 |
540 mm
|
Bore diameter |
|---|---|---|
| D |
690 mm
|
Outside diameter |
| B |
400 mm
|
Total bearing width over inner rings |
| T |
400 mm
|
Total bearing width over outer rings |
| d1 |
≈ 568 mm
|
Abutment diameter shaft |
| D1 |
≈ 635 mm
|
Abutment diameter housing |
| r3,4 |
min. 5 mm
|
Outer ring radius (chamfer) |
| Basic dynamic load rating | C |
8 150 kN
|
|---|---|---|
| Basic static load rating | C0 |
19 300 kN
|
| Fatigue load limit | Pu |
1 430 kN
|
| Comparative radial load rating | CF |
2 000 kN
|
| Comparative axial load rating | CFa |
393 kN
|
| Thrust factor | K |
1.45
|
| Limiting value | e |
0.4
|
| Calculation factor | Y1 |
1.7
|
| Calculation factor | Y2 |
2.5
|
| Calculation factor | Y0 |
1.6
|
| Mass bearing |
370 kg
|
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