Part Number QASN20A311S, Single Concentric Two-Bolt Pillow Block On The Timken Company


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	Part Number QASN20A311S, Single Concentric Two-Bolt Pillow Block

Timken-Mounted-Bearing-SIngle-Concentric-Two-Bolt-Pillow-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		QASN20A311SB QASN20A311SC QASN20A311SEB QASN20A311SEC QASN20A311SEM QASN20A311SEN QASN20A311SEO QASN20A311SET QASN20A311SM QASN20A311SN QASN20A311SO QASN20A311ST

Locking Style		Single Concentric

Housing Construction		Two-Bolt Pillow Block

UPC Code		883450355599 883450355605 883450355612 883450355629 883450355636 883450355643 883450355650 883450355667 883450355674 883450355681 883450355698 883450355704

Dimensions

Dimension A		4.92 in 125 mm

Dimension B		9.49 in 241 mm

Dimension C		5.98 in 152 mm

Dimension D Min		12.56 in 319 mm

Dimension D Max		14.41 in 366 mm

Dimension F		16.14 in 410 mm

Dimension G		3.98 in 101 mm

Dimension H		1.97 in 50 mm

Dimension J (Bolt Size)		0.875 in 24 mm

Dimension KA		1.61 in 41 mm

Dimension L		4.96 in 126 mm

Dimension M		2.95 in 75 mm

Dimension RA		0.39 in 10 mm

Dimension SA		4.61 in 117 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		2.85

Y2 - Geometry Factor		4.24

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

MORE IMAGES


	· Single Concentric Two-Bolt Pillow Block - Dimensional Drawing

VIEW CAD DRAWING



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· 2D Front View


· 2D Left View


· 2D Sales Drawing

DOWNLOADS


		Bearing Life Calculation Tool

		Primary Sealing (PDF, 280KB)

		TIMKEN® SPHERICAL ROLLER BEARING SOLID-BLOCK MOUNTED BEARINGS

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Part Number QASN20A311S, Single Concentric Two-Bolt Pillow Block

Engineering Group

Bearing Number

Shaft Size

Shaft Size Type

Full Timken Part Number

Locking Style

Housing Construction

UPC Code

Dimension A

Dimension B

Dimension C

Dimension D Min

Dimension D Max

Dimension F

Dimension G

Dimension H

Dimension J (Bolt Size)

Dimension KA

Dimension L

Dimension M

Dimension RA

Dimension SA

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