31320 X/DFMatched tapered roller bearings arranged face-to-face

SKU: 31320 X/DFMatched 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.

ID:192568

Dimensions - 31320 X/DF

Dimensions

d
100 mm
Bore diameter
D
215 mm
Outside diameter
T
113 mm
Total width
2B
102 mm
Width of inner rings
b
13.15 mm
Width of lubrication groove
K
10 mm
Diameter of lubrication hole
r3,4
min. 3 mm
Chamfer dimension
r5
min. 1 mm
Chamfer dimension

Abutment dimensions - 31320 X/DF

Abutment dimensions

da
max. 121 mm
Diameter of shaft abutment
Da
min. 168 mm
Diameter of housing abutment
Da
max. 202.5 mm
Diameter of housing abutment
Ca
min. 7 mm
Minimum width of space required in housing on large side face
ra
max. 4 mm
Radius of fillet
rc
max. 1 mm
Radius of fillet

Calculation data

Basic dynamic load rating C
685 kN
Basic static load rating C0
930 kN
Fatigue load limit Pu
102 kN
Reference speed
1 700 r/min
Limiting speed
3 000 r/min
Limiting value e
0.83
Calculation factor Y1
0.81
Calculation factor Y2
1.2
Calculation factor Y0
0.8

Mass

Mass
18.4 kg

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