SKF double row tapered roller bearings are ready-to-mount units, manufactured with a predetermined axial clearance or preload. TDO design bearings have a double row outer ring and two single inner rings that usually have an intermediate ring between them. Their roller sets are arranged back-to-back (O-arrangement), which enables them to accommodate tilting moments. Design variants include features such as a helical groove in the bore or lubrication grooves in the side faces of the bearing rings.
| Design variant/feature |
TDO
|
| d |
260 mm
|
Bore diameter |
|---|---|---|
| D |
480 mm
|
Outside diameter |
| T |
284 mm
|
Total width |
| C |
220 mm
|
Width of outer ring |
| d1 |
≈ 366 mm
|
Diameter of shaft abutment |
| D1 |
≈ 454 mm
|
Diameter of housing abutment |
| D1 |
≈ 454 mm
|
Diameter of housing abutment |
| r1,2 |
min. 5 mm
|
Chamfer dimension of inner ring |
| r3,4 |
min. 1.5 mm
|
Chamfer dimension of outer ring |
| a |
233 mm
|
Distance between pressure points |
| Basic dynamic load rating | C |
4 330 kN
|
|---|---|---|
| Basic static load rating | C0 |
7 350 kN
|
| Fatigue load limit | Pu |
600 kN
|
| Limiting value | e |
0.43
|
| Calculation factor | Y1 |
1.6
|
| Calculation factor | Y2 |
2.3
|
| Calculation factor | Y0 |
1.6
|
| Comparative radial load rating | CF |
1 080 kN
|
| Comparative axial load rating | CFa |
456 kN
|
| Thrust factor | K |
1.36
|
| Mass |
210 kg
|
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