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 |
TQIN
|
| Bore type |
Cylindrical
|
| d |
406.4 mm
|
Bore diameter |
|---|---|---|
| D |
565.15 mm
|
Outside diameter |
| B |
409.575 mm
|
Total bearing width over inner rings |
| T |
365.125 mm
|
Total bearing width over outer rings |
| d1 |
≈ 475 mm
|
Abutment diameter shaft |
| D1 |
≈ 541 mm
|
Abutment diameter housing |
| r1,2 |
min. 3.3 mm
|
Inner ring radius (chamfer) |
| r3,4 |
min. 1.5 mm
|
Chamfer dimension outer ring |
| Basic dynamic load rating | C |
6 050 kN
|
|---|---|---|
| Basic static load rating | C0 |
15 600 kN
|
| Fatigue load limit | Pu |
1 180 kN
|
| Comparative radial load rating | CF |
1 630 kN
|
| Comparative axial load rating | CFa |
264 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 |
304 kg
|
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