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/XDC
|
| d |
498.475 mm
|
Bore diameter |
|---|---|---|
| D |
634.873 mm
|
Outside diameter |
| T |
177.8 mm
|
Total width |
| C |
142.875 mm
|
Width of outer ring |
| d1 |
≈ 556 mm
|
Diameter of shaft abutment |
| D1 |
≈ 609.265 mm
|
Diameter of housing abutment |
| D1 |
≈ 610 mm
|
Diameter of housing abutment |
| r1,2 |
min. 6.4 mm
|
Chamfer dimension of inner ring |
| r3,4 |
min. 1.5 mm
|
Chamfer dimension of outer ring |
| a |
213 mm
|
Distance between pressure points |
| Basic dynamic load rating | C |
2 750 kN
|
|---|---|---|
| Basic static load rating | C0 |
7 350 kN
|
| Fatigue load limit | Pu |
540 kN
|
| Limiting value | e |
0.35
|
| Calculation factor | Y1 |
1.9
|
| Calculation factor | Y2 |
2.9
|
| Calculation factor | Y0 |
1.8
|
| Comparative radial load rating | CF |
670 kN
|
| Comparative axial load rating | CFa |
224 kN
|
| Thrust factor | K |
1.7
|
| Mass |
125 kg
|
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