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 |
TQOS/GWISI
|
| Bore type |
Cylindrical with helical groove
|
| d |
440 mm
|
Bore diameter |
|---|---|---|
| D |
650 mm
|
Outside diameter |
| B |
353.5 mm
|
Total bearing width over inner rings |
| T |
353.5 mm
|
Total bearing width over outer rings |
| d1 |
≈ 488 mm
|
Abutment diameter shaft |
| D1 |
≈ 580 mm
|
Abutment diameter housing |
| r1,2 |
min. 6.4 mm
|
Chamfer dimension inner ring |
| r3,4 |
min. 6.4 mm
|
Outer ring radius (chamfer) |
| Basic dynamic load rating | C |
6 710 kN
|
|---|---|---|
| Basic static load rating | C0 |
13 200 kN
|
| Fatigue load limit | Pu |
1 020 kN
|
| Comparative radial load rating | CF |
1 630 kN
|
| Comparative axial load rating | CFa |
255 kN
|
| Thrust factor | K |
1.82
|
| Limiting value | e |
0.33
|
| Calculation factor | Y1 |
2
|
| Calculation factor | Y2 |
3
|
| Calculation factor | Y0 |
2
|
| Mass bearing |
379 kg
|
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