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 |
TQITE
|
| Bore type |
Tapered 1:12
|
| d |
555.233 mm
|
Bore diameter (large diameter of tapered bore) |
|---|---|---|
| D |
761.873 mm
|
Outside diameter |
| B |
692.15 mm
|
Total bearing width over inner rings |
| T |
536.575 mm
|
Total bearing width over outer rings |
| d1 |
≈ 673.1 mm
|
Abutment diameter shaft |
| D1 |
≈ 730 mm
|
Abutment diameter housing |
| r1,2 |
min. 6.4 mm
|
Inner ring radius (chamfer) |
| r3,4 |
min. 1.5 mm
|
Chamfer dimension outer ring |
| Basic dynamic load rating | C |
12 388 kN
|
|---|---|---|
| Basic static load rating | C0 |
32 000 kN
|
| Fatigue load limit | Pu |
2 200 kN
|
| Comparative radial load rating | CF |
3 350 kN
|
| Comparative axial load rating | CFa |
540 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 |
990 kg
|
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