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Unit of Measure

Key Dimensions

Engineering Group

 N/A Mounted Bearing

Bearing Number

 N/A 22218

Shaft Size

 N/A 3 1/4 in

Shaft Size Type

 N/A Imperial

Full Timken Part Number

 N/A QMF18J304SB QMF18J304SC QMF18J304SEB QMF18J304SEC QMF18J304SEM QMF18J304SEN QMF18J304SEO QMF18J304SET QMF18J304SM QMF18J304SN QMF18J304SO QMF18J304ST

Locking Style

 N/A Eccentric

Housing Construction

 N/A Four-Bolt Square Flange

UPC Code

 N/A 0883450067720 0883450067737 0883450067751 0883450067768 0883450067775 0883450067782 0883450067799 0883450067805 0883450161701 0883450162388 0883450254465 0883450254946

Other Dimensions

Dimension BC

 N/A 9.91 in251.7 mm

Dimension C

 N/A 4.76 in120.9 mm

Dimension D

 N/A 7.63 in193.8 mm

Dimension E

 N/A 7 in177.8 mm

Dimension F

 N/A 8.63 in219.2 mm

Dimension H

 N/A 1.31 in33.3 mm

Dimension J (Bolt Size)

 N/A 0.75 in20 mm

Dimension K

 N/A 1.44 in36.6 mm

Dimension L Exp

 N/A 4.3 in109.2 mm

Dimension L Fix

 N/A 4.22 in107.2 mm

Dimension M

 N/A 2.59 in65.8 mm

Dimension N

 N/A 3.31 in84.1 mm

Dimension R

 N/A 0.19 in4.8 mm

Dimension S

 N/A 4.03 in102.4 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 0.083 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