Description
| Design variant/feature | TDO |
Dimensions
| 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 | Shoulder diameter of inner ring (large side face) |
| r1,2 | min. 6 mm | Chamfer dimension of inner ring |
| r3,4 | min. 1.5 mm | Chamfer dimension of outer ring |
| a | 233 mm | Distance between pressure points |
Calculation data
| 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 |
Tolerances and clearances
General bearing specifications
- Tolerances:
bearings: Normal and CL7C, P5
inch bearings: Normal and CL - Internal clearance
Bearing interfaces
- Seat tolerances for standard conditions
- Tolerances and resultant fit
NR 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.
- High radial load carrying capacity
- Accommodate axial loads in both directions
- Relatively high stiffness
- Accommodate tilting moments
- Many variants, including a helical groove in the bore or lubrication grooves in the side faces of the bearing rings
- Ready to mount
