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All Product Types > ENGINEERED BEARINGS > Mounted Bearings > Mounted Solid-Block Spherical Roller Bearings > Single Concentric Solid-Block Mounted Bearings > Single Concentric Four Bolt Square Flange Block > Part Number QAFL18A308S  
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Part Number QAFL18A308S, Single Concentric Four Bolt Square Flange 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
QAFL18A308SB
QAFL18A308SC
QAFL18A308SEB
QAFL18A308SEC
QAFL18A308SEM
QAFL18A308SEN
QAFL18A308SEO
QAFL18A308SET
QAFL18A308SM
QAFL18A308SN
QAFL18A308SO
QAFL18A308ST

Locking Style
Single Concentric

Housing Construction
Four-Bolt Square Flange

UPC Code
0883450040709
0883450040716
0883450040730
0883450040747
0883450040754
0883450040761
0883450040778
0883450040785
0883450191401
0883450191562
0883450268769
0883450268929


Dimensions

Dimension BC
9.5 in
241.3 mm

Dimension C
5.13 in
130.3 mm

Dimension D
7.63 in
193.8 mm

Dimension E
6.72 in
170.7 mm

Dimension F
8.38 in
212.9 mm

Dimension H
1.28 in
32.5 mm

Dimension J (Bolt Size)
0.75 in
20 mm

Dimension KA
1.44 in
36.6 mm

Dimension L Exp
4.27 in
108.5 mm

Dimension L Fix
4.19 in
106.4 mm

Dimension M
2.59 in
65.8 mm

Dimension N
3.4 in
86.4 mm

Dimension RA
0.16 in
4.1 mm

Dimension SA
4.03 in
102.4 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

Eng Seal Temperatures

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