31320T125 X/DBMatched tapered roller bearings arranged back-to-back

SKU: 31320T125 X/DBMatched tapered roller bearings arranged back-to-back

Matched tapered roller bearings arranged back-to-back (O-arrangement, load lines diverge towards the bearing axis) accommodate high radial loads, axial loads in both directions, and tilting moments. The precision manufactured intermediate rings between the innner and outer rings enable 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:198819

Dimensions - 31320T125 X/DB

Dimensions

d
100 mm
Bore diameter
D
215 mm
Outside diameter
T
125 mm
Total width
d1
158.61 mm
Shoulder diameter of inner ring
C
82 mm
Width of outer rings
l
12 mm
Width of spacer ring
b
6 mm
Width of lubrication groove
K
3 mm
Diameter of lubrication hole
r1,2
min. 4 mm
Chamfer dimension
r5
min. 1 mm
Chamfer dimension
a
141.905 mm
Distance between pressure points

Abutment dimensions - 31320T125 X/DB

Abutment dimensions

db
min. 116 mm
Diameter of shaft abutment
Db
min. 202 mm
Diameter of shaft abutment
Cb
min. 21.5 mm
Minimum width of space required in housing on small 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
18.8 kg

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