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31324 X/DF

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31324 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

Description

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Dimensions - 31324 X/DF

Dimensions

d

120 mm

Bore diameter
D

260 mm

Outside diameter
T

136 mm

Total width
2B

124 mm

Width of inner rings
b

24 mm

Width of lubrication groove
K

14 mm

Diameter of lubrication hole
r3,4

min. 3 mm

Chamfer dimension
r5

min. 1 mm

Chamfer dimension

Abutment dimensions - 31324 X/DF

Abutment dimensions

da

max. 146 mm

Diameter of shaft abutment
Da

min. 203 mm

Diameter of housing abutment
Da

max. 246.5 mm

Diameter of housing abutment
Ca

min. 9 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 ratingC

992 kN

Basic static load ratingC0

1 400 kN

Fatigue load limitPu

146 kN

Reference speed

1 400 r/min

Limiting speed

2 400 r/min

Limiting valuee

0.83

Calculation factorY1

0.81

Calculation factorY2

1.2

Calculation factorY0

0.8

Mass

Mass

32.5 kg

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