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All Product Types > ENGINEERED BEARINGS > Mounted Bearings > Mounted Solid-Block Spherical Roller Bearings > Double Concentric Solid-Block Mounted Bearings > Double Concentric Two-Bolt Pillow Block > Part Number QAASN18A308S  
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Part Number QAASN18A308S, Double Concentric Two-Bolt Pillow Block


 



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 1/2 in

Shaft Size Type
Imperial

Full Timken Part Number
QAASN18A308SB
QAASN18A308SC
QAASN18A308SEB
QAASN18A308SEC
QAASN18A308SEM
QAASN18A308SEN
QAASN18A308SEO
QAASN18A308SET
QAASN18A308SM
QAASN18A308SN
QAASN18A308SO
QAASN18A308ST

Locking Style
Double Concentric

Housing Construction
Two-Bolt Pillow Block

UPC Code
0883450351027
0883450351034
0883450351041
0883450351058
0883450351065
0883450351072
0883450351089
0883450351096
0883450351102
0883450351119
0883450351126
0883450351133


Dimensions

Dimension A
4.41 in
112 mm

Dimension B
8.35 in
212 mm

Dimension C
5.12 in
130 mm

Dimension D Min
11.42 in
290 mm

Dimension D Max
12.87 in
327 mm

Dimension F
14.96 in
380 mm

Dimension G
3.39 in
86 mm

Dimension H
1.54 in
39 mm

Dimension J (Bolt Size)
0.875 in
24 mm

Dimension L
4.29 in
109 mm

Dimension M
2.59 in
65.8 mm

Dimension RAA
0.91 in
23 mm

Dimension SAA
5.2 in
132 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



 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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