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 |
380 mm
|
Bore diameter |
|---|---|---|
| D |
540 mm
|
Outside diameter |
| B |
300 mm
|
Total bearing width over inner rings |
| T |
300 mm
|
Total bearing width over outer rings |
| d1 |
≈ 413 mm
|
Abutment diameter shaft |
| D1 |
≈ 470 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 |
4 180 kN
|
|---|---|---|
| Basic static load rating | C0 |
10 000 kN
|
| Fatigue load limit | Pu |
800 kN
|
| Comparative radial load rating | CF |
1 020 kN
|
| Comparative axial load rating | CFa |
195 kN
|
| Thrust factor | K |
1.49
|
| Limiting value | e |
0.4
|
| Calculation factor | Y1 |
1.7
|
| Calculation factor | Y2 |
2.5
|
| Calculation factor | Y0 |
1.6
|
| Mass bearing |
228 kg
|
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