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30220/DF

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30220/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

Display in:

SKF performance class

SKF Explorer

Dimensions - 30220/DF

Dimensions

d

100 mm

Bore diameter
D

180 mm

Outside diameter
T

74 mm

Total width
2B

68 mm

Width of inner rings
b

8 mm

Width of lubrication groove
K

6 mm

Diameter of lubrication hole
r3,4

min. 2.5 mm

Chamfer dimension
r5

min. 1 mm

Chamfer dimension

Abutment dimensions - 30220/DF

Abutment dimensions

da

max. 116 mm

Diameter of shaft abutment
Da

min. 157 mm

Diameter of housing abutment
Da

max. 168.5 mm

Diameter of housing abutment
Ca

min. 5 mm

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

max. 3 mm

Radius of fillet
rc

max. 1 mm

Radius of fillet

Calculation data

Basic dynamic load ratingC

521 kN

Basic static load ratingC0

640 kN

Fatigue load limitPu

72 kN

Reference speed

2 400 r/min

Limiting speed

3 600 r/min

Limiting valuee

0.43

Calculation factorY1

1.6

Calculation factorY2

2.3

Calculation factorY0

1.6

Mass

Mass

7.52 kg

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