Part Number QAAFY20A311S, Double Concentric Round Flange Block On The Timken Company


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	Part Number QAAFY20A311S, Double Concentric Round Flange Block

Timken-Mounted-Bearing-Double-Concentric-Round-Flange-Block

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Specifications · Dimensions · Radial and Thrust Factors · Engineering Seal Speed · Engineering Bearing Attributes · Engineering Internal Radial Clearance

Specifications

Engineering Group		Mounted Bearing

Bearing Number		22220

Shaft Size		3 11/16 in

Shaft Size Type		Imperial

Full Timken Part Number		QAAFY20A311SEM QAAFY20A311SM

Locking Style		Double Concentric

Housing Construction		Round Flange

UPC Code		883450851336 883450851343

Dimensions

Dimension BC		10.75 in 273.1 mm

Dimension C		6 in 152.4 mm

Dimension D		8.38 in 212.9 mm

Dimension E		7.6 in 193 mm

Dimension F		12.63 in 320.8 mm

Dimension H		1.13 in 28.7 mm

Dimension J (Bolt Size)		1 in 24 mm

Dimension L Exp		4.95 in 125.7 mm

Dimension L Fix		4.87 in 123.7 mm

Dimension M		2.97 in 75.4 mm

Dimension N		3.81 in 96.8 mm

Dimension RAA		1.05 in 26.7 mm

Dimension SAA		5.92 in 150.4 mm

Radial and Thrust Factors

C0 - Static Load		113000 lbf 502000 N

C - Dynamic Load (Basic)		97700 lbf 435000 N

e - Geometry Factor		0.24

Y1 - Geometry Factor		2.84

Y2 - Geometry Factor		4.23

Engineering Seal Speed

Oil Lubrication - M/N Seal		1200 rpm

Oil Lubrication - T Seal		2000 rpm

Oil Lubrication - B/C/O Seal		900 rpm

Grease Lubrication - M/N Seal		1200 rpm

Grease Lubrication - T Seal		1600 rpm

Grease Lubrication - B/C/O Seal		900 rpm

Engineering Bearing Attributes

Float		0.083 in 2.108 mm

Shaft Tolerance		0.0030 in 0.076 mm

Engineering Internal Radial Clearance

Eng Internal Radial Clearance - Min		0.0030

Eng Internal Radial Clearance - Max		0.0047

Pre Install Clearance Min		0.0030 in 0.075 mm

Pre Install Clearance Max		0.0047 in 0.120 mm

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	· Double Concentric Round Flange Block - Dimensional Drawing

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Part Number QAAFY20A311S, Double Concentric Round Flange Block

Engineering Group

Bearing Number

Shaft Size

Shaft Size Type

Full Timken Part Number

Locking Style

Housing Construction

UPC Code

Dimension BC

Dimension C

Dimension D

Dimension E

Dimension F

Dimension H

Dimension J (Bolt Size)

Dimension L Exp

Dimension L Fix

Dimension M

Dimension N

Dimension RAA

Dimension SAA

C0 - Static Load

C - Dynamic Load (Basic)

e - Geometry Factor

Y1 - Geometry Factor

Y2 - Geometry Factor

Oil Lubrication - M/N Seal

Oil Lubrication - T Seal

Oil Lubrication - B/C/O Seal

Grease Lubrication - M/N Seal

Grease Lubrication - T Seal

Grease Lubrication - B/C/O Seal

Float

Shaft Tolerance

Eng Internal Radial Clearance - Min

Eng Internal Radial Clearance - Max

Pre Install Clearance Min

Pre Install Clearance Max