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 |
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 |
≈ 438 mm
|
Abutment diameter shaft |
| D1 |
≈ 490 mm
|
Abutment diameter housing |
| r1,2 |
min. 1.5 mm
|
Chamfer dimension inner ring |
| r3,4 |
min. 6.4 mm
|
Outer ring radius (chamfer) |
| Basic dynamic load rating | C |
5 700 kN
|
|---|---|---|
| Basic static load rating | C0 |
13 200 kN
|
| Fatigue load limit | Pu |
1 020 kN
|
| Comparative radial load rating | CF |
1 400 kN
|
| Comparative axial load rating | CFa |
289 kN
|
| Thrust factor | K |
1.4
|
| Limiting value | e |
0.43
|
| Calculation factor | Y1 |
1.6
|
| Calculation factor | Y2 |
2.3
|
| Calculation factor | Y0 |
1.6
|
| Mass bearing |
220 kg
|
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