31326 X/DF
Matched tapered roller bearings arranged face-to-face
Matched tapered roller bearings arranged face-to-face (X-arrangement, load lines diverge towards the bearing axis) accommodate high radial loads and axial loads in both directions.
The precision manufactured intermediate ring between the outer rings enables a defined internal clearance or preload to be achieved when mounted. Matched tapered roller bearings are typically used in gearboxes, hoisting equipment, rolling mills, and machines in the mining industry.
- High radial load carrying capacity
- Designed for axial loads in both directions
- Relatively high stiffness
- Surface finish on the contact surfaces of the rollers and raceways that enhances operational reliability
Dimensions
d |
130 mm
|
Bore diameter |
D |
280 mm
|
Outside diameter |
T |
144 mm
|
Total width |
2B |
132 mm
|
Width of inner rings |
b |
20 mm
|
Width of lubrication groove |
K |
15 mm
|
Diameter of lubrication hole |
r3,4 |
min.4 mm
|
Chamfer dimension |
r5 |
min.1.5 mm
|
Chamfer dimension |
Abutment dimensions
da |
max.157 mm
|
Diameter of shaft abutment |
Da |
min.218 mm
|
Diameter of housing abutment |
Da |
max.264.5 mm
|
Diameter of housing abutment |
Ca |
min.8 mm
|
Minimum width of space required in housing on large side face |
ra |
max.5 mm
|
Radius of fillet |
rc |
max.1.5 mm
|
Radius of fillet |
Calculation data
Basic dynamic load rating |
C |
1 110 kN
|
Basic static load rating |
C0 |
1 560 kN
|
Fatigue load limit |
Pu |
160 kN
|
Reference speed |
|
1 300 r/min
|
Limiting speed |
|
2 400 r/min
|
Limiting value |
e |
0.83
|
Calculation factor |
Y1 |
0.81
|
Calculation factor |
Y2 |
1.2
|
Calculation factor |
Y0 |
0.8
|