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Unit of Measure

Key Dimensions

Engineering Group

 N/A Mounted Bearing

Bearing Number

 N/A 22220

Shaft Size

 N/A 3 3/4 in

Shaft Size Type

 N/A Imperial

Full Timken Part Number

 N/A QMFX20J312SB QMFX20J312SC QMFX20J312SEB QMFX20J312SEC QMFX20J312SEM QMFX20J312SEN QMFX20J312SEO QMFX20J312SET QMFX20J312SM QMFX20J312SN QMFX20J312SO QMFX20J312ST

Locking Style

 N/A Eccentric

Housing Construction

 N/A Four-Bolt Square Flange

UPC Code

 N/A 0883450144766 0883450144773 0883450144780 0883450144797 0883450144803 0883450144810 0883450144827 0883450144834 0883450164924 0883450165426 0883450257220 0883450257640

Other Dimensions

Dimension BC

 N/A 11.75 in298.5 mm

Dimension C

 N/A 6 in152.4 mm

Dimension D

 N/A 8.5 in215.9 mm

Dimension E

 N/A 8.31 in211.1 mm

Dimension F

 N/A 10.56 in268.2 mm

Dimension H

 N/A 1.5 in38.1 mm

Dimension J (Bolt Size)

 N/A 0.875 in24 mm

Dimension K

 N/A 1.63 in41.4 mm

Dimension L Exp

 N/A 5.04 in128 mm

Dimension L Fix

 N/A 4.96 in126 mm

Dimension M

 N/A 2.96 in75.2 mm

Dimension N

 N/A 4.06 in103.1 mm

Dimension R

 N/A 0.37 in9.4 mm

Dimension S

 N/A 4.6 in116.8 mm

Radial and Thrust Factors

C0 - Static Load

 N/A 113000 lbf502000 N

C - Dynamic Load (Basic)

 N/A 97700 lbf435000 N

e - Geometry Factor

 N/A 0.24

Y1 - Geometry Factor

 N/A 2.84

Y2 - Geometry Factor

 N/A 4.23

Engineering Seal Speed

Oil Lubrication - M/N Seal

 N/A 1200 rpm

Oil Lubrication - T Seal

 N/A 2000 rpm

Oil Lubrication - B/C/O Seal

 N/A 900 rpm

Grease Lubrication - M/N Seal

 N/A 1200 rpm

Grease Lubrication - T Seal

 N/A 1600 rpm

Grease Lubrication - B/C/O Seal

 N/A 900 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 0.003

Eng Internal Radial Clearance - Max

 N/A 0.0047

Pre Install Clearance Min

 N/A 0.0030 in0.075 mm

Pre Install Clearance Max

 N/A 0.0047 in0.120 mm