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 |
510 mm
|
Bore diameter |
|---|---|---|
| D |
655 mm
|
Outside diameter |
| B |
377 mm
|
Total bearing width over inner rings |
| T |
379 mm
|
Total bearing width over outer rings |
| d1 |
≈ 535 mm
|
Abutment diameter shaft |
| D1 |
≈ 606 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 |
7 650 kN
|
|---|---|---|
| Basic static load rating | C0 |
17 600 kN
|
| Fatigue load limit | Pu |
1 320 kN
|
| Comparative radial load rating | CF |
1 900 kN
|
| Comparative axial load rating | CFa |
316 kN
|
| Thrust factor | K |
1.71
|
| Limiting value | e |
0.35
|
| Calculation factor | Y1 |
1.9
|
| Calculation factor | Y2 |
2.9
|
| Calculation factor | Y0 |
1.8
|
| Mass bearing |
312 kg
|
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