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Double Concentric Two-Bolt Pillow Block
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ENGINEERED BEARINGS
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Mounted Bearings
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Mounted Solid-Block Spherical Roller Bearings
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Double Concentric Solid-Block Mounted Bearings
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Double Concentric Two-Bolt Pillow Block
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Part Number QAAPL18A303S
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Part Number QAAPL18A303S, 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
QAAPL18A303SB
QAAPL18A303SC
QAAPL18A303SEB
QAAPL18A303SEC
QAAPL18A303SEM
QAAPL18A303SEN
QAAPL18A303SEO
QAAPL18A303SET
QAAPL18A303SM
QAAPL18A303SN
QAAPL18A303SO
QAAPL18A303ST
Locking Style
Double Concentric
Housing Construction
Two-Bolt Pillow Block
UPC Code
0883450321297
0883450321303
0883450321310
0883450321327
0883450321334
0883450321341
0883450321358
0883450321365
0883450321372
0883450321389
0883450321396
0883450321402
Dimensions
Dimension A
3-3/4
in
95.3
mm
Dimension B
7.69
in
195.3
mm
Dimension C
5.13
in
130.3
mm
Dimension D Min
9.25
in
235
mm
Dimension D Max
10.75
in
273.1
mm
Dimension F
13
in
330.2
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
0.0030
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
Eng Seal Temperatures
TIMKEN® SPHERICAL ROLLER BEARING SOLID-BLOCK MOUNTED BEARINGS
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