30312 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.

Reviews

There are no reviews yet.

Be the first to review “30312 Series 2”

Your email address will not be published. Required fields are marked *

Dimension series
2FB
Dimensions - 30312

Dimensions

d
60 mm
 Bore diameter
D
130 mm
 Outside diameter
T
33.5 mm
 Total width
d1
≈ 91.87 mm
 Shoulder diameter of inner ring
B
31 mm
 Width of inner ring
C
26 mm
 Width of outer ring
r1,2
min. 3 mm
 Chamfer dimension of inner ring
r3,4
min. 2.5 mm
 Chamfer dimension of outer ring
a
25.713 mm
 Distance side face to pressure point
Abutment dimensions - 30312

Abutment dimensions

da
max. 77 mm
 Diameter of shaft abutment
db
min. 72.5 mm
 Diameter of shaft abutment
Da
min. 112 mm
 Diameter of housing abutment
Da
max. 119.5 mm
 Diameter of housing abutment
Db
min. 120 mm
 Diameter of housing abutment
Ca
min. 5 mm
 Minimum width of space required in housing on large side face
Cb
min. 7.5 mm
 Minimum width of space required in housing on small side face
ra
max. 3 mm
 Radius of shaft fillet
rb
max. 2.5 mm
 Radius of housing fillet

Calculation data

SKF performance class
SKF Explorer
Basic dynamic load rating C
208 kN
Basic static load rating C0
196 kN
Fatigue load limit Pu
23.6 kN
Reference speed
4 300 r/min
Limiting speed
5 300 r/min
Limiting value e
0.35
Calculation factor Y
1.7
Calculation factor Y0
0.9

Dimension series
2FB
Dimensions - 30312

Dimensions

d
2.3622 in
 Bore diameter
D
5.1181 in
 Outside diameter
T
1.3189 in
 Total width
d1
≈ 3.6169 in
 Shoulder diameter of inner ring
B
1.2205 in
 Width of inner ring
C
1.0236 in
 Width of outer ring
r1,2
min. 0.1181 in
 Chamfer dimension of inner ring
r3,4
min. 0.0984 in
 Chamfer dimension of outer ring
a
1.0123 in
 Distance side face to pressure point
Abutment dimensions - 30312

Abutment dimensions

da
max. 3.0315 in
 Diameter of shaft abutment
db
min. 2.8543 in
 Diameter of shaft abutment
Da
min. 4.4094 in
 Diameter of housing abutment
Da
max. 4.7047 in
 Diameter of housing abutment
Db
min. 4.7244 in
 Diameter of housing abutment
Ca
min. 0.1969 in
 Minimum width of space required in housing on large side face
Cb
min. 0.2953 in
 Minimum width of space required in housing on small side face
ra
max. 0.1181 in
 Radius of shaft fillet
rb
max. 0.0984 in
 Radius of housing fillet

Calculation data

SKF performance class
SKF Explorer
Basic dynamic load rating C
46 760 lbf
Basic static load rating C0
44 063 lbf
Fatigue load limit Pu
5 305 lbf
Reference speed
4 300 r/min
Limiting speed
5 300 r/min
Limiting value e
0.35
Calculation factor Y
1.7
Calculation factor Y0
0.9

Related products