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31309/CL7CDF

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31309/CL7CDF

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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SKF performance class

SKF Explorer

Dimensions - 31309/CL7CDF

Dimensions

d

45 mm

Bore diameter
D

100 mm

Outside diameter
T

54.5 mm

Total width
2B

50 mm

Width of inner rings
b

10.5 mm

Width of lubrication groove
K

8.5 mm

Diameter of lubrication hole
r3,4

min. 1.5 mm

Chamfer dimension
r5

min. 0.6 mm

Chamfer dimension

Abutment dimensions - 31309/CL7CDF

Abutment dimensions

da

max. 57 mm

Diameter of shaft abutment
Da

min. 79 mm

Diameter of housing abutment
Da

max. 92 mm

Diameter of housing abutment
Ca

min. 4 mm

Minimum width of space required in housing on large side face
ra

max. 2 mm

Radius of fillet
rc

max. 0.6 mm

Radius of fillet

Calculation data

Basic dynamic load ratingC

194 kN

Basic static load ratingC0

204 kN

Fatigue load limitPu

24.5 kN

Reference speed

4 000 r/min

Limiting speed

6 700 r/min

Limiting valuee

0.83

Calculation factorY1

0.81

Calculation factorY2

1.2

Calculation factorY0

0.8

Mass

Mass

1.98 kg

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