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Unit of Measure

Key Dimensions

Engineering Group

 N/A Mounted Bearing

Bearing Number

 N/A 22218

Shaft Size

 N/A 80 mm

Shaft Size Type

 N/A Metric

Full Timken Part Number

 N/A QAATP18A080SB QAATP18A080SC QAATP18A080SEB QAATP18A080SEC QAATP18A080SEM QAATP18A080SEN QAATP18A080SEO QAATP18A080SET QAATP18A080SM QAATP18A080SN QAATP18A080SO QAATP18A080ST

Locking Style

 N/A Double Concentric

Housing Construction

 N/A Top Pull Take-Up

Other Dimensions

Dimension A1

 N/A 4.32 in109.7 mm

Dimension B

 N/A 4.09 in103.9 mm

Dimension C

 N/A 5.13 in130.2 mm

Dimension D

 N/A 9.94 in252.5 mm

Dimension E

 N/A 8.41 in213.6 mm

Dimension F

 N/A 2.41 in61.3 mm

Dimension G

 N/A 3.54 in90 mm

Dimension H

 N/A 4.5 in114.3 mm

Dimension J

 N/A 2.25 in57.1 mm

Dimension L

 N/A 9.5 in241.3 mm

Dimension M

 N/A 2.59 in65.9 mm

Dimension N

 N/A 4.37 in110.9 mm

Dimension P

 N/A 9 in228.6 mm

Dimension Q

 N/A 1.31 in33.3 mm

Dimension RAA

 N/A 0.82 in20.8 mm

Dimension S

 N/A 1.38 in35.1 mm

Dimension TAA

 N/A 5.19 in131.8 mm

Dimension U

 N/A 0.81 in20.6 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 0.08 in2.03 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