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.
| SKF performance class |
SKF Explorer
|
| Design variant/feature |
TQOSN/GWSI
|
| Bore type |
Cylindrical with helical groove
|
| d |
355.6 mm
|
Bore diameter |
|---|---|---|
| D |
482.6 mm
|
Outside diameter |
| B |
265.113 mm
|
Total bearing width over inner rings |
| T |
269.875 mm
|
Total bearing width over outer rings |
| d1 |
≈ 383 mm
|
Abutment diameter shaft |
| D1 |
≈ 435 mm
|
Abutment diameter housing |
| r1,2 |
min. 1.5 mm
|
Chamfer dimension inner ring |
| r3,4 |
min. 3.3 mm
|
Outer ring radius (chamfer) |
| Basic dynamic load rating | C |
4 150 kN
|
|---|---|---|
| Basic static load rating | C0 |
8 150 kN
|
| Fatigue load limit | Pu |
670 kN
|
| Comparative radial load rating | CF |
865 kN
|
| Comparative axial load rating | CFa |
202 kN
|
| Thrust factor | K |
1.24
|
| Limiting value | e |
0.46
|
| Calculation factor | Y1 |
1.5
|
| Calculation factor | Y2 |
2.2
|
| Calculation factor | Y0 |
1.4
|
| Mass bearing |
138 kg
|
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