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 1/2 in

Shaft Size Type

 N/A Imperial

Full Timken Part Number

 N/A QMMH18J308SB QMMH18J308SC QMMH18J308SEB QMMH18J308SEC QMMH18J308SEM QMMH18J308SEN QMMH18J308SEO QMMH18J308SET QMMH18J308SM QMMH18J308SN QMMH18J308SO QMMH18J308ST

Locking Style

 N/A Eccentric

UPC Code

 N/A 0883450418881 0883450418898 0883450418904 0883450418911 0883450418928 0883450418935 0883450418942 0883450418959 0883450418966 0883450418973 0883450418980 0883450418997

Dimensions

Dimension A

 N/A 6.31 in160.3 mm

Dimension B

 N/A 10 1/4 in260.4 mm

Dimension C

 N/A 4.76 in120.9 mm

Dimension D

 N/A 7.88 in200.2 mm

Dimension E

 N/A 2.5 in63.5 mm

Dimension F

 N/A 3 in76.2 mm

Dimension G

 N/A 3 in76.2 mm

Dimension K

 N/A 1.44 in36.6 mm

Dimension L

 N/A 3.91 in99.3 mm

Dimension M

 N/A 2.59 in65.8 mm

Dimension R

 N/A 0.12 in3 mm

Dimension S

 N/A 4.03 in102.4 mm

Thread Size J

 N/A 1 1/4-7UNC

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 0.083 in2.108 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