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 |
711.2 mm
|
Bore diameter |
|---|---|---|
| D |
914.4 mm
|
Outside diameter |
| B |
390 mm
|
Total bearing width over inner rings |
| T |
390 mm
|
Total bearing width over outer rings |
| d1 |
≈ 760 mm
|
Abutment diameter shaft |
| D1 |
≈ 847 mm
|
Abutment diameter housing |
| r1,2 |
min. 3.3 mm
|
Chamfer dimension inner ring |
| r3,4 |
min. 6.4 mm
|
Outer ring radius (chamfer) |
| Basic dynamic load rating | C |
7 650 kN
|
|---|---|---|
| Basic static load rating | C0 |
19 300 kN
|
| Fatigue load limit | Pu |
1 340 kN
|
| Comparative radial load rating | CF |
1 830 kN
|
| Comparative axial load rating | CFa |
344 kN
|
| Thrust factor | K |
1.54
|
| Limiting value | e |
0.37
|
| Calculation factor | Y1 |
1.8
|
| Calculation factor | Y2 |
2.7
|
| Calculation factor | Y0 |
1.8
|
| Mass bearing |
600 kg
|
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