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 |
TQOSN/GWISI
|
| Bore type |
Cylindrical with helical groove
|
| d |
460 mm
|
Bore diameter |
|---|---|---|
| D |
610 mm
|
Outside diameter |
| B |
360 mm
|
Total bearing width over inner rings |
| T |
360 mm
|
Total bearing width over outer rings |
| d1 |
≈ 488 mm
|
Abutment diameter shaft |
| D1 |
≈ 562 mm
|
Abutment diameter housing |
| r1,2 |
min. 1.5 mm
|
Chamfer dimension inner ring |
| r3,4 |
min. 6 mm
|
Outer ring radius (chamfer) |
| Basic dynamic load rating | C |
6 800 kN
|
|---|---|---|
| Basic static load rating | C0 |
14 300 kN
|
| Fatigue load limit | Pu |
1 100 kN
|
| Comparative radial load rating | CF |
1 430 kN
|
| Comparative axial load rating | CFa |
236 kN
|
| Thrust factor | K |
1.76
|
| Limiting value | e |
0.33
|
| Calculation factor | Y1 |
2
|
| Calculation factor | Y2 |
3
|
| Calculation factor | Y0 |
2
|
| Mass bearing |
279 kg
|
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