331640 A
Double row tapered roller bearing, TDO designSKF 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
Description
| Design variant/feature | TDO/DC |
Dimensions
| d | 558.8 mm | Bore diameter |
|---|---|---|
| D | 736.6 mm | Outside diameter |
| T | 225.425 mm | Total width |
| C | 177.8 mm | Width of outer ring |
| d1 | ≈ 640 mm | Diameter of shaft abutment |
| D1 | ≈ 707 mm | Diameter of housing abutment |
| D1 | ≈ 707 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 | 255 mm | Distance between pressure points |
Calculation data
| Basic dynamic load rating | C | 4 290 kN |
|---|---|---|
| Basic static load rating | C0 | 11 600 kN |
| Fatigue load limit | Pu | 815 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 | 1 060 kN |
| Comparative axial load rating | CFa | 355 kN |
| Thrust factor | K | 1.69 |
Mass
| Mass | 150 kg |
Tolerances and clearances
Bearing data
- Tolerances:
metric bearings: Normal and CL7C, P5
inch bearings: Normal and CL - Internal clearance
Bearing interfaces
