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 |
558.8 mm
|
Bore diameter |
|---|---|---|
| D |
736.6 mm
|
Outside diameter |
| B |
409.575 mm
|
Total bearing width over inner rings |
| T |
409.575 mm
|
Total bearing width over outer rings |
| d1 |
≈ 594 mm
|
Abutment diameter shaft |
| D1 |
≈ 672 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 |
8 580 kN
|
|---|---|---|
| Basic static load rating | C0 |
23 200 kN
|
| Fatigue load limit | Pu |
1 630 kN
|
| Comparative radial load rating | CF |
2 120 kN
|
| Comparative axial load rating | CFa |
355 kN
|
| Thrust factor | K |
1.69
|
| Limiting value | e |
0.35
|
| Calculation factor | Y1 |
1.9
|
| Calculation factor | Y2 |
2.9
|
| Calculation factor | Y0 |
1.8
|
| Mass bearing |
480 kg
|
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