Part Number QAAMC20A311S, Double Concentric Cartridge Block On The Timken Company


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	Part Number QAAMC20A311S, Double Concentric Cartridge Block

Timken-Mounted-Bearing-Double-Concentric-Cartridge-Block

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Double Concentric Cartridge 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		QAAMC20A311SB QAAMC20A311SC QAAMC20A311SEB QAAMC20A311SEC QAAMC20A311SEM QAAMC20A311SEN QAAMC20A311SEO QAAMC20A311SET QAAMC20A311SM QAAMC20A311SN QAAMC20A311SO QAAMC20A311ST

Locking Style		Double Concentric

Housing Construction		Cartridge

Dimensions

Dimension A		0.78 in 19.8 mm

Dimension B		1.28 in 32.5 mm

Dimension C		6 in 152.4 mm

Dimension D		0.31 in 7.9 mm

Dimension F		8.1250 in 206.4 mm

Dimension G		4.14 in 105.2 mm

Dimension L Exp		5.13 in 130.3 mm

Dimension L Fix		5.05 in 128.3 mm

Dimension M		2.97 in 75.4 mm

Dimension RAA		0.89 in 22.6 mm

Dimension SAA		5.94 in 150.9 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

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		TIMKEN® SPHERICAL ROLLER BEARING SOLID-BLOCK MOUNTED BEARINGS

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Part Number QAAMC20A311S, Double Concentric Cartridge Block

Engineering Group

Bearing Number

Shaft Size

Shaft Size Type

Full Timken Part Number

Locking Style

Housing Construction

Dimension A

Dimension B

Dimension C

Dimension D

Dimension F

Dimension G

Dimension L Exp

Dimension L Fix

Dimension M

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