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 |
457.2 mm
|
Bore diameter |
|---|---|---|
| D |
606 mm
|
Outside diameter |
| B |
381 mm
|
Total bearing width over inner rings |
| T |
381 mm
|
Total bearing width over outer rings |
| d1 |
≈ 485 mm
|
Abutment diameter shaft |
| D1 |
≈ 560 mm
|
Abutment diameter housing |
| r1,2 |
min. 1 mm
|
Chamfer dimension inner ring |
| r3,4 |
min. 3.3 mm
|
Outer ring radius (chamfer) |
| Basic dynamic load rating | C |
7 500 kN
|
|---|---|---|
| Basic static load rating | C0 |
16 300 kN
|
| Fatigue load limit | Pu |
1 250 kN
|
| Comparative radial load rating | CF |
1 600 kN
|
| Comparative axial load rating | CFa |
259 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 |
298 kg
|
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