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/W
|
| Bore type |
Cylindrical
|
| d |
625 mm
|
Bore diameter |
|---|---|---|
| D |
815 mm
|
Outside diameter |
| B |
480 mm
|
Total bearing width over inner rings |
| T |
480 mm
|
Total bearing width over outer rings |
| d1 |
≈ 656 mm
|
Abutment diameter shaft |
| D1 |
≈ 746 mm
|
Abutment diameter housing |
| r1,2 |
min. 3 mm
|
Chamfer dimension inner ring |
| r3,4 |
min. 6.5 mm
|
Outer ring radius (chamfer) |
| Basic dynamic load rating | C |
13 200 kN
|
|---|---|---|
| Basic static load rating | C0 |
31 000 kN
|
| Fatigue load limit | Pu |
2 120 kN
|
| Comparative radial load rating | CF |
3 250 kN
|
| Comparative axial load rating | CFa |
534 kN
|
| Thrust factor | K |
1.74
|
| Limiting value | e |
0.33
|
| Calculation factor | Y1 |
2
|
| Calculation factor | Y2 |
3
|
| Calculation factor | Y0 |
2
|
| Mass bearing |
660 kg
|
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