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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 QAAFX20A312SB QAAFX20A312SC QAAFX20A312SEB QAAFX20A312SEC QAAFX20A312SEM QAAFX20A312SEN QAAFX20A312SEO QAAFX20A312SET QAAFX20A312SM QAAFX20A312SN QAAFX20A312SO QAAFX20A312ST

Locking Style

 N/A Double Concentric

Housing Construction

 N/A Flange Block

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 L Exp

 N/A 5.04 in128 mm

Dimension L Fix

 N/A 4.96 in126 mm

Dimension M

 N/A 2.97 in75.4 mm

Dimension N

 N/A 4.06 in103.1 mm

Dimension RAA

 N/A 0.97 in24.6 mm

Dimension SAA

 N/A 5.92 in150.4 mm

Dimension G

 N/A 8.875 in225.43 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 0.0030

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