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 |
TQOS/GW
|
| Bore type |
Cylindrical with helical groove
|
| d |
266.7 mm
|
Bore diameter |
|---|---|---|
| D |
355.6 mm
|
Outside diameter |
| B |
230.188 mm
|
Total bearing width over inner rings |
| T |
228.6 mm
|
Total bearing width over outer rings |
| d1 |
≈ 287 mm
|
Abutment diameter shaft |
| D1 |
≈ 326 mm
|
Abutment diameter housing |
| r3,4 |
min. 3.3 mm
|
Outer ring radius (chamfer) |
| Basic dynamic load rating | C |
2 320 kN
|
|---|---|---|
| Basic static load rating | C0 |
4 650 kN
|
| Fatigue load limit | Pu |
415 kN
|
| Comparative radial load rating | CF |
610 kN
|
| Comparative axial load rating | CFa |
104 kN
|
| Thrust factor | K |
1.67
|
| Limiting value | e |
0.35
|
| Calculation factor | Y1 |
1.9
|
| Calculation factor | Y2 |
2.9
|
| Calculation factor | Y0 |
1.8
|
| Mass bearing |
58.5 kg
|
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