31328 X/DFC330Matched tapered roller bearings arranged face-to-face

SKU: 31328 X/DFC330Matched 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:192942

Dimensions - 31328 X/DFC330

Dimensions

d
140 mm
Bore diameter
D
300 mm
Outside diameter
T
154 mm
Total width
2B
140 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 - 31328 X/DFC330

Abutment dimensions

da
max. 169 mm
Diameter of shaft abutment
Da
min. 235 mm
Diameter of housing abutment
Da
max. 284 mm
Diameter of housing abutment
Ca
min. 9 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
1 264 kN
Basic static load rating C0
1 800 kN
Fatigue load limit Pu
180 kN
Reference speed
1 200 r/min
Limiting speed
2 200 r/min
Limiting value e
0.83
Calculation factor Y1
0.81
Calculation factor Y2
1.2
Calculation factor Y0
0.8

Mass

Mass
49.1 kg

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