30309 Series 2

  • High radial and axial load carrying capacity
  • Accommodate axial loads in one direction
  • Low friction and long service life
  • Separable and interchangeable components
Category:

Description

Single row tapered roller bearing

Single row tapered roller bearings are designed to accommodate combined radial and axial loads and provide low friction during operation. The inner ring, with rollers and cage, can be mounted separately from the outer ring. These separable and interchangeable components facilitate mounting, dismounting and maintenance. By mounting one single row tapered roller bearing against another and applying a preload, a rigid bearing application can be achieved.

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Dimension series
2FB
Dimensions - 30309

Dimensions

d
45 mm
 Bore diameter
D
100 mm
 Outside diameter
T
27.25 mm
 Total width
d1
≈ 70.2 mm
 Shoulder diameter of inner ring
B
25 mm
 Width of inner ring
C
22 mm
 Width of outer ring
r1,2
min. 2 mm
 Chamfer dimension of inner ring
r3,4
min. 1.5 mm
 Chamfer dimension of outer ring
a
20.75 mm
 Distance side face to pressure point
Abutment dimensions - 30309

Abutment dimensions

da
max. 59 mm
 Diameter of shaft abutment
db
min. 55 mm
 Diameter of shaft abutment
Da
min. 86 mm
 Diameter of housing abutment
Da
max. 92 mm
 Diameter of housing abutment
Db
min. 92 mm
 Diameter of housing abutment
Ca
min. 3 mm
 Minimum width of space required in housing on large side face
Cb
min. 5 mm
 Minimum width of space required in housing on small side face
ra
max. 2 mm
 Radius of shaft fillet
rb
max. 1.5 mm
 Radius of housing fillet

Calculation data

SKF performance class
SKF Explorer
Basic dynamic load rating C
132 kN
Basic static load rating C0
120 kN
Fatigue load limit Pu
14.3 kN
Reference speed
5 600 r/min
Limiting speed
7 000 r/min
Limiting value e
0.35
Calculation factor Y
1.7
Calculation factor Y0
0.9

Dimension series
2FB
Dimensions - 30309

Dimensions

d
1.7717 in
 Bore diameter
D
3.937 in
 Outside diameter
T
1.0728 in
 Total width
d1
≈ 2.7638 in
 Shoulder diameter of inner ring
B
0.9843 in
 Width of inner ring
C
0.8661 in
 Width of outer ring
r1,2
min. 0.0787 in
 Chamfer dimension of inner ring
r3,4
min. 0.0591 in
 Chamfer dimension of outer ring
a
0.8169 in
 Distance side face to pressure point
Abutment dimensions - 30309

Abutment dimensions

da
max. 2.3228 in
 Diameter of shaft abutment
db
min. 2.1654 in
 Diameter of shaft abutment
Da
min. 3.3858 in
 Diameter of housing abutment
Da
max. 3.622 in
 Diameter of housing abutment
Db
min. 3.622 in
 Diameter of housing abutment
Ca
min. 0.1181 in
 Minimum width of space required in housing on large side face
Cb
min. 0.1969 in
 Minimum width of space required in housing on small side face
ra
max. 0.0787 in
 Radius of shaft fillet
rb
max. 0.0591 in
 Radius of housing fillet

Calculation data

SKF performance class
SKF Explorer
Basic dynamic load rating C
29 675 lbf
Basic static load rating C0
26 977 lbf
Fatigue load limit Pu
3 215 lbf
Reference speed
5 600 r/min
Limiting speed
7 000 r/min
Limiting value e
0.35
Calculation factor Y
1.7
Calculation factor Y0
0.9

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