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Double Concentric Two-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 Two-Bolt Pillow Block
>
Part Number QAAP18A303S
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Part Number QAAP18A303S, Double Concentric Two-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
22218
Shaft Size
3 3/16
in
Shaft Size Type
Imperial
Full Timken Part Number
QAAP18A303SB
QAAP18A303SC
QAAP18A303SEB
QAAP18A303SEC
QAAP18A303SEM
QAAP18A303SEN
QAAP18A303SEO
QAAP18A303SET
QAAP18A303SM
QAAP18A303SN
QAAP18A303SO
QAAP18A303ST
Locking Style
Double Concentric
Housing Construction
Two-Bolt Pillow Block
UPC Code
0883450319492
0883450319508
0883450319515
0883450319522
0883450319539
0883450319546
0883450319553
0883450319560
0883450319577
0883450319584
0883450319591
0883450319607
Dimensions
Dimension A
3.75
in
95.3
mm
Dimension B
7.69
in
195.3
mm
Dimension C
5.13
in
130.3
mm
Dimension D Min
9.38
in
238.3
mm
Dimension D Max
11.25
in
285.8
mm
Dimension F
13.5
in
342.9
mm
Dimension G
3.41
in
86.6
mm
Dimension H
1.88
in
47.8
mm
Dimension J (Bolt Size)
0.875
in
24
mm
Dimension L
4.3
in
109.2
mm
Dimension M
2.59
in
65.8
mm
Dimension RAA
0.89
in
22.6
mm
Dimension SAA
5.18
in
131.6
mm
Radial and Thrust Factors
C0 - Static Load
87200
lbf
388000
N
C - Dynamic Load (Basic)
79700
lbf
355000
N
e - Geometry Factor
0.23
Y1 - Geometry Factor
2.90
Y2 - Geometry Factor
4.31
Engineering Seal Speed
Oil Lubrication - M/N Seal
1400
rpm
Oil Lubrication - T Seal
2400
rpm
Oil Lubrication - B/C/O Seal
1000
rpm
Grease Lubrication - M/N Seal
1400
rpm
Grease Lubrication - T Seal
2000
rpm
Grease Lubrication - B/C/O Seal
1000
rpm
Engineering Bearing Attributes
Float
0.083
in
2.108
mm
Shaft Tolerance
0.003
in
0.076
mm
Engineering Internal Radial Clearance
Eng Internal Radial Clearance - Min
0.0024
Eng Internal Radial Clearance - Max
0.0039
Pre Install Clearance Min
0.0024
in
0.060
mm
Pre Install Clearance Max
0.0039
in
0.100
mm
VIEW CAD DRAWING
·
3D
·
2D Front View
·
2D Left View
·
2D Sales Drawing
DOWNLOADS
Bearing Life Calculation Tool
Primary Sealing
(PDF, 411KB)
Secondary Sealing
(PDF, 720KB)
TIMKEN® SPHERICAL ROLLER BEARING SOLID-BLOCK MOUNTED BEARINGS
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©
The Timken Company. ©
The Timken Company.
©
The Timken Company.