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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 1/2 in

Shaft Size Type

 N/A Imperial

Full Timken Part Number

 N/A QAAMC18A308SB QAAMC18A308SC QAAMC18A308SEB QAAMC18A308SEC QAAMC18A308SEM QAAMC18A308SEN QAAMC18A308SEO QAAMC18A308SET QAAMC18A308SM QAAMC18A308SN QAAMC18A308SO QAAMC18A308ST

Locking Style

 N/A Double Concentric

Housing Construction

 N/A Cartridge

UPC Code

 N/A 0883450024808 0883450024815 0883450024839 0883450024846 0883450024853 0883450024860 0883450024877 0883450024884 0883450194938 0883450195102 0883450272100 0883450272278

Other Dimensions

Dimension A

 N/A 0.59 in15 mm

Dimension B

 N/A 1.06 in26.9 mm

Dimension C

 N/A 5.13 in130.3 mm

Dimension D

 N/A 0.23 in5.8 mm

Dimension F

 N/A 6.7500 in171.5 mm

Dimension G

 N/A 3.45 in87.6 mm

Dimension L Exp

 N/A 4.42 in112.3 mm

Dimension L Fix

 N/A 4.34 in110.2 mm

Dimension M

 N/A 2.59 in65.8 mm

Dimension RAA

 N/A 0.84 in21.3 mm

Dimension SAA

 N/A 5.18 in131.6 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