The Timken Company
The Timken Company
4500 Mt Pleasant St. NW
N. Canton, OH 44720
Phone: (234) 262-3000
E-Mail: CustomerCAD@timken.com • Web site: www.timken.com
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Unit of Measure

Specifications

Engineering Group

 N/A Mounted Bearing

Bearing Number

 N/A 22218

Shaft Size

 N/A 3 7/16 in

Shaft Size Type

 N/A Imperial

Full Timken Part Number

 N/A QATU18A307SB QATU18A307SC QATU18A307SEB QATU18A307SEC QATU18A307SEM QATU18A307SEN QATU18A307SEO QATU18A307SET QATU18A307SM QATU18A307SN QATU18A307SO QATU18A307ST

Locking Style

 N/A Single Concentric

Housing Construction

 N/A Take-Up

UPC Code

 N/A 0883450050807 0883450050814 0883450050838 0883450050845 0883450050852 0883450050869 0883450050876 0883450050883 0883450195263 0883450195423 0883450272445 0883450272612

Dimensions

Dimension A1

 N/A 3.63 in92.2 mm

Dimension C

 N/A 1 in25.4 mm

Dimension D

 N/A 7.63 in193.8 mm

Dimension E

 N/A 6.81 in173 mm

Dimension F

 N/A 1.81 in46 mm

Dimension G

 N/A 1.88 in47.8 mm

Dimension J

 N/A 4.88 in124 mm

Dimension L

 N/A 10.12 in257 mm

Dimension KA

 N/A 1.44 in36.6 mm

Dimension M

 N/A 2.59 in65.8 mm

Dimension N

 N/A 4.22 in107.2 mm

Dimension P

 N/A 6.25 in158.8 mm

Dimension S

 N/A 1.81 in46 mm

Radial and Thrust Factors

C0 - Static Load

 N/A 87200 lbf388000 N

C - Dynamic Load (Basic)

 N/A 79700 lbf355000 N

e - Geometry Factor

 N/A 0.23

Y1 - Geometry Factor

 N/A 2.90

Y2 - Geometry Factor

 N/A 4.31

Engineering Seal Speed

Oil Lubrication - M/N Seal

 N/A 1400 rpm

Oil Lubrication - T Seal

 N/A 2400 rpm

Oil Lubrication - B/C/O Seal

 N/A 1000 rpm

Grease Lubrication - M/N Seal

 N/A 1400 rpm

Grease Lubrication - T Seal

 N/A 2000 rpm

Grease Lubrication - B/C/O Seal

 N/A 1000 rpm

Engineering Bearing Attributes

Float

 N/A 0.08 in2.03 mm

Shaft Tolerance

 N/A 0.0030 in0.076 mm

Engineering Internal Radial Clearance

Eng Internal Radial Clearance - Min

 N/A 0.0024

Eng Internal Radial Clearance - Max

 N/A 0.0039

Pre Install Clearance Min

 N/A 0.0024 in0.060 mm

Pre Install Clearance Max

 N/A 0.0039 in0.100 mm