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Double Concentric Four-Bolt Pillow Block
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All Product Types
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ENGINEERED BEARINGS
>
Mounted Bearings
>
Mounted Solid-Block Spherical Roller Bearings
>
Double Concentric Solid-Block Mounted Bearings
>
Double Concentric Four-Bolt Pillow Block
>
Part Number QAAPR20A312S
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Part Number QAAPR20A312S, Double Concentric Four-Bolt Pillow Block
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Unit of Measure:
Imperial
Metric
Both
Specifications
·
Dimensions
·
Radial and Thrust Factors
·
Engineering Seal Speed
·
Engineering Bearing Attributes
·
Engineering Internal Radial Clearance
Specifications
Engineering Group
Mounted Bearing
Bearing Number
22220
Shaft Size
3 3/4
in
Shaft Size Type
Imperial
Locking Style
Double Concentric
Housing Construction
Four-Bolt Pillow Block
Dimensions
Dimension A
4-1/4
in
108
mm
Dimension B
8.78
in
223
mm
Dimension C
6
in
152.4
mm
Dimension D Min
10.88
in
276.4
mm
Dimension D Max
13.38
in
339.9
mm
Dimension E
2-1/4
in
57.2
mm
Dimension F
14.88
in
378
mm
Dimension G
4.31
in
109.5
mm
Dimension H
1.4
in
35.6
mm
Dimension J (Bolt Size)
0.75
in
20
mm
Dimension L
5.13
in
130.3
mm
Dimension M
2.97
in
75.4
mm
Dimension RAA
0.99
in
25.1
mm
Dimension SAA
5.94
in
150.82
mm
Radial and Thrust Factors
C0 - Static Load
113000
lbf
502000
N
C - Dynamic Load (Basic)
97700
lbf
435000
N
e - Geometry Factor
0.24
Y1 - Geometry Factor
2.85
Y2 - Geometry Factor
4.24
Engineering Seal Speed
Oil Lubrication - M/N Seal
1200
rpm
Oil Lubrication - T Seal
2000
rpm
Oil Lubrication - B/C/O Seal
900
rpm
Grease Lubrication - M/N Seal
1200
rpm
Grease Lubrication - T Seal
1600
rpm
Grease Lubrication - B/C/O Seal
900
rpm
Engineering Bearing Attributes
Float
0.083
in
2.108
mm
Shaft Tolerance
0.0030
in
0.076
mm
Engineering Internal Radial Clearance
Eng Internal Radial Clearance - Min
0.0030
Eng Internal Radial Clearance - Max
0.0047
Pre Install Clearance Min
0.0030
in
0.075
mm
Pre Install Clearance Max
0.0047
in
0.120
mm
VIEW CAD DRAWING
·
3D
·
2D Front View
·
2D Left View
·
2D Sales Drawing
DOWNLOADS
Bearing Life Calculation Tool
Eng Seal Temperatures
TIMKEN® SPHERICAL ROLLER BEARING SOLID-BLOCK MOUNTED BEARINGS
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The Timken Company. ©
The Timken Company.
©
The Timken Company.