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Unit of Measure

Specifications

Engineering Group

N/A Mounted Bearing

Bearing Number

N/A 22218

Shaft Size

N/A 3 3/16 in

Shaft Size Type

N/A Imperial

Full Timken Part Number

N/A QAF18A303SB QAF18A303SC QAF18A303SEB QAF18A303SEC QAF18A303SEM QAF18A303SEN QAF18A303SEO QAF18A303SET QAF18A303SM QAF18A303SN QAF18A303SO QAF18A303ST

Locking Style

N/A Single Concentric

Housing Construction

N/A Four-Bolt Square Flange

UPC Code

N/A 0883450325981 0883450325998 0883450326001 0883450326018 0883450326025 0883450326032 0883450326049 0883450326056 0883450326063 0883450326070 0883450326087 0883450326094

Dimensions

Dimension BC

N/A 9.91 in251.7 mm

Dimension C

N/A 5.13 in130.3 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 KA

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 RA

N/A 0.19 in4.8 mm

Dimension SA

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
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