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 |
450 mm
|
Bore diameter |
|---|---|---|
| D |
595 mm
|
Outside diameter |
| B |
390 mm
|
Total bearing width over inner rings |
| T |
352 mm
|
Total bearing width over outer rings |
| d1 |
≈ 522 mm
|
Abutment diameter shaft |
| D1 |
≈ 573 mm
|
Abutment diameter housing |
| r1,2 |
min. 3 mm
|
Inner ring radius (chamfer) |
| r3,4 |
min. 1.5 mm
|
Chamfer dimension outer ring |
| Basic dynamic load rating | C |
5 500 kN
|
|---|---|---|
| Basic static load rating | C0 |
16 300 kN
|
| Fatigue load limit | Pu |
1 220 kN
|
| Comparative radial load rating | CF |
1 460 kN
|
| Comparative axial load rating | CFa |
236 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 |
295 kg
|
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