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 |
368.3 mm
|
Bore diameter (large diameter of tapered bore) |
|---|---|---|
| d |
368.3 mm
|
Bore diameter |
| D |
523.875 mm
|
Outside diameter |
| B |
419.96 mm
|
Total bearing width over inner rings |
| T |
366.712 mm
|
Total bearing width over outer rings |
| d1 |
≈ 432 mm
|
Abutment diameter shaft |
| D1 |
≈ 499 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 |
5 830 kN
|
|---|---|---|
| Basic static load rating | C0 |
15 000 kN
|
| Fatigue load limit | Pu |
1 160 kN
|
| Comparative radial load rating | CF |
1 560 kN
|
| Comparative axial load rating | CFa |
256 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 |
282 kg
|
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