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 |
TQON/GW
|
| Bore type |
Cylindrical with helical groove
|
| d |
400 mm
|
Bore diameter |
|---|---|---|
| D |
600 mm
|
Outside diameter |
| B |
308 mm
|
Total bearing width over inner rings |
| T |
308 mm
|
Total bearing width over outer rings |
| d1 |
≈ 450 mm
|
Abutment diameter shaft |
| D1 |
≈ 547 mm
|
Abutment diameter housing |
| r1,2 |
min. 5 mm
|
Chamfer dimension inner ring |
| r3,4 |
min. 5 mm
|
Outer ring radius (chamfer) |
| Basic dynamic load rating | C |
5 500 kN
|
|---|---|---|
| Basic static load rating | C0 |
11 000 kN
|
| Fatigue load limit | Pu |
865 kN
|
| Comparative radial load rating | CF |
1 370 kN
|
| Comparative axial load rating | CFa |
255 kN
|
| Thrust factor | K |
1.53
|
| Limiting value | e |
0.37
|
| Calculation factor | Y1 |
1.8
|
| Calculation factor | Y2 |
2.7
|
| Calculation factor | Y0 |
1.8
|
| Mass bearing |
295 kg
|
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