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/GWSI
|
| Bore type |
Cylindrical with helical groove
|
| d |
406.4 mm
|
Bore diameter |
|---|---|---|
| D |
546.1 mm
|
Outside diameter |
| B |
288.925 mm
|
Total bearing width over inner rings |
| T |
288.925 mm
|
Total bearing width over outer rings |
| d1 |
≈ 434 mm
|
Abutment diameter shaft |
| D1 |
≈ 496 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 |
5 100 kN
|
|---|---|---|
| Basic static load rating | C0 |
10 200 kN
|
| Fatigue load limit | Pu |
815 kN
|
| Comparative radial load rating | CF |
1 060 kN
|
| Comparative axial load rating | CFa |
250 kN
|
| Thrust factor | K |
1.22
|
| Limiting value | e |
0.48
|
| Calculation factor | Y1 |
1.4
|
| Calculation factor | Y2 |
2.1
|
| Calculation factor | Y0 |
1.4
|
| Mass bearing |
186 kg
|
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