Part Number QMPX20J312S, Eccentric Four-Bolt Pillow Block On The Timken Company


All Product Types > ENGINEERED BEARINGS > Mounted Bearings > Mounted Solid-Block Spherical Roller Bearings > Eccentric Solid-Block Mounted Bearings > Eccentric Four-Bolt Pillow Block > Part Number QMPX20J312S


	Part Number QMPX20J312S, 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 3/4 in

Shaft Size Type		Imperial

Full Timken Part Number		QMPX20J312SB QMPX20J312SC QMPX20J312SEB QMPX20J312SEC QMPX20J312SEM QMPX20J312SEN QMPX20J312SEO QMPX20J312SET QMPX20J312SM QMPX20J312SN QMPX20J312SO QMPX20J312ST

Locking Style		Eccentric

Housing Construction		Four-Bolt Pillow Block

UPC Code		0883450094429 0883450094436 0883450094450 0883450094467 0883450094474 0883450094481 0883450094498 0883450094504 0883450159500 0883450160230 0883450252799 0883450253215

Dimensions

Dimension A		5 in 127 mm

Dimension B		9.44 in 239.8 mm

Dimension C		6 in 152.4 mm

Dimension D Min		12.5 in 317.5 mm

Dimension D Max		14 in 355.6 mm

Dimension E		3.5 in 88.9 mm

Dimension F		16.75 in 425.5 mm

Dimension G		5.5 in 139.7 mm

Dimension H		1.63 in 41.4 mm

Dimension J (Bolt Size)		0.875 in 24 mm

Dimension K		1.63 in 41.4 mm

Dimension L		5.72 in 145.3 mm

Dimension M		2.96 in 75.2 mm

Dimension R		0.34 in 8.6 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 QMPX20J312S, 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