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 |
TQI
|
| Bore type |
Cylindrical
|
| d |
415.925 mm
|
Bore diameter |
|---|---|---|
| D |
590.55 mm
|
Outside diameter |
| B |
479.96 mm
|
Total bearing width over inner rings |
| T |
419.1 mm
|
Total bearing width over outer rings |
| d1 |
≈ 495 mm
|
Abutment diameter shaft |
| D1 |
≈ 563 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 |
7 210 kN
|
|---|---|---|
| Basic static load rating | C0 |
19 300 kN
|
| Fatigue load limit | Pu |
1 430 kN
|
| Comparative radial load rating | CF |
1 930 kN
|
| Comparative axial load rating | CFa |
313 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 |
405 kg
|
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