Part Number QMPF20J311S, Eccentric Four-Bolt Pillow Block On The Timken Company


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	Part Number QMPF20J311S, Eccentric Four-Bolt Pillow Block

Timken-Mounted-Bearing-Eccentric-Four-Bolt-Pillow-Block

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Eccentric Four-Bolt Pillow Block - Dimensional Drawing

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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		QMPF20J311SB QMPF20J311SC QMPF20J311SEB QMPF20J311SEC QMPF20J311SEM QMPF20J311SEN QMPF20J311SEO QMPF20J311SET QMPF20J311SM QMPF20J311SN QMPF20J311SO QMPF20J311ST

Locking Style		Eccentric

Housing Construction		Four-Bolt Pillow Block

UPC Code		0883450084826 0883450084833 0883450084857 0883450084864 0883450084871 0883450084888 0883450084895 0883450084901 0883450155823 0883450156554 0883450250764 0883450251181

Dimensions

Dimension A		4.25 in 108 mm

Dimension B		8.78 in 223 mm

Dimension C		6 in 152.4 mm

Dimension D Min		10.88 in 276.4 mm

Dimension D Max		13.38 in 339.9 mm

Dimension E		2-1/4 in 57.2 mm

Dimension F		14.88 in 378 mm

Dimension G		4.31 in 109.5 mm

Dimension H		1.4 in 35.6 mm

Dimension J (Bolt Size)		0.75 in 20 mm

Dimension K		1.63 in 41.4 mm

Dimension L		5.13 in 130.3 mm

Dimension M		2.96 in 75.2 mm

Dimension R		0.36 in 9.1 mm

Dimension S		4.59 in 116.6 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

VIEW CAD DRAWING



· 3D


· 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 QMPF20J311S, Eccentric Four-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 E

Dimension F

Dimension G

Dimension H

Dimension J (Bolt Size)

Dimension K

Dimension L

Dimension M

Dimension R

Dimension S

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