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 QAAMC18A307SB QAAMC18A307SC QAAMC18A307SEB QAAMC18A307SEC QAAMC18A307SEM QAAMC18A307SEN QAAMC18A307SEO QAAMC18A307SET QAAMC18A307SM QAAMC18A307SN QAAMC18A307SO QAAMC18A307ST

Locking Style

 N/A Double Concentric

Housing Construction

 N/A Cartridge

UPC Code

 N/A 0883450024709 0883450024716 0883450024730 0883450024747 0883450024754 0883450024761 0883450024778 0883450024785 0883450194921 0883450195096 0883450272094 0883450272261

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