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.
| Design variant/feature |
TQOSN/GWISI
|
| Bore type |
Cylindrical with helical groove
|
| d |
440 mm
|
Bore diameter |
|---|---|---|
| D |
590 mm
|
Outside diameter |
| B |
480 mm
|
Total bearing width over inner rings |
| T |
480 mm
|
Total bearing width over outer rings |
| d1 |
≈ 468 mm
|
Abutment diameter shaft |
| D1 |
≈ 539 mm
|
Abutment diameter housing |
| r1,2 |
min. 1 mm
|
Chamfer dimension inner ring |
| r3,4 |
min. 5 mm
|
Outer ring radius (chamfer) |
| Basic dynamic load rating | C |
7 650 kN
|
|---|---|---|
| Basic static load rating | C0 |
20 000 kN
|
| Fatigue load limit | Pu |
1 460 kN
|
| Comparative radial load rating | CF |
1 860 kN
|
| Comparative axial load rating | CFa |
255 kN
|
| Thrust factor | K |
2.12
|
| Limiting value | e |
0.28
|
| Calculation factor | Y1 |
2.4
|
| Calculation factor | Y2 |
3.6
|
| Calculation factor | Y0 |
2.5
|
| Mass bearing |
365 kg
|
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