AKMI 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 | 479.425 mm | Bore diameter |
|---|---|---|
| D | 679.45 mm | Outside diameter |
| T | 276.225 mm | Total width |
| C | 222.25 mm | Width of outer ring |
| d1 | 572.5 mm | Shoulder diameter of inner ring (large side face) |
| D1 | 647.812 mm | Raceway diameter of outer ring (large side face) |
| r1,2 | min. 6.4 mm | Chamfer dimension of inner ring |
| r3,4 | min. 1.5 mm | Chamfer dimension of outer ring |
| a | 256 mm | Distance between pressure points |
| Basic dynamic load rating | C | 5 010 kN |
|---|---|---|
| Basic static load rating | C0 | 12 700 kN |
| Fatigue load limit | Pu | 915 kN |
| Limiting value | e | 0.33 |
| Calculation factor | Y1 | 2 |
| Calculation factor | Y2 | 3 |
| Calculation factor | Y0 | 2 |
| Comparative radial load rating | CF | 1 250 kN |
| Comparative axial load rating | CFa | 409 kN |
| Thrust factor | K | 1.76 |
General bearing specifications
Bearing interfaces
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