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 |
TQO/GWI
|
| Bore type |
Cylindrical with helical groove
|
| d |
395 mm
|
Bore diameter |
|---|---|---|
| D |
545 mm
|
Outside diameter |
| B |
268 mm
|
Total bearing width over inner rings |
| T |
288.9 mm
|
Total bearing width over outer rings |
| d1 |
≈ 440 mm
|
Abutment diameter shaft |
| D1 |
≈ 489 mm
|
Abutment diameter housing |
| r1,2 |
min. 5 mm
|
Chamfer dimension inner ring |
| r3,4 |
min. 10 mm
|
Outer ring radius (chamfer) |
| Basic dynamic load rating | C |
3 910 kN
|
|---|---|---|
| Basic static load rating | C0 |
9 500 kN
|
| Fatigue load limit | Pu |
750 kN
|
| Comparative radial load rating | CF |
1 020 kN
|
| Comparative axial load rating | CFa |
238 kN
|
| Thrust factor | K |
1.22
|
| Limiting value | e |
0.48
|
| Calculation factor | Y1 |
1.4
|
| Calculation factor | Y2 |
2.1
|
| Calculation factor | Y0 |
1.4
|
| Mass bearing |
195 kg
|
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