Part Number QAC18A308S, Single Concentric Piloted Flange Cartridge On The Timken Company


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	Part Number QAC18A308S, Single Concentric Piloted Flange Cartridge

Timken-Mounted-Bearing-Single-Concentric-Piloted-Flange-Cartridge

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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		22218

Shaft Size		3 1/2 in

Shaft Size Type		Imperial

Full Timken Part Number		QAC18A308SB QAC18A308SC QAC18A308SEB QAC18A308SEC QAC18A308SEM QAC18A308SEN QAC18A308SEO QAC18A308SET QAC18A308SM QAC18A308SN QAC18A308SO QAC18A308ST

Locking Style		Single Concentric

Housing Construction		Piloted Flange Cartridge

UPC Code		0883450035903 0883450035910 0883450035934 0883450035941 0883450035958 0883450035965 0883450035972 0883450035989 0883450193252 0883450193412 0883450270441 0883450270601

Dimensions

Dimension BC		8.63 in 219.2 mm

Dimension B Exp		2.96 in 75.2 mm

Dimension B Fix		2.88 in 73.2 mm

Dimension C		5.13 in 130.3 mm

Dimension D		7.38 in 187.5 mm

Dimension E		6.1 in 154.9 mm

Dimension F		10.34 in 262.6 mm

Dimension G		7.375 in 187.3 mm

Dimension H		1 in 25.4 mm

Dimension J (Bolt Size)		0.75 in 20 mm

Dimension KA		1.44 in 36.6 mm

Dimension L Exp		4.27 in 108.5 mm

Dimension L Fix		4.19 in 106.4 mm

Dimension M		2.59 in 65.8 mm

Dimension N		1.31 in 33.3 mm

Dimension RA		0.16 in 4.1 mm

Dimension SA		4.03 in 102.4 mm

Radial and Thrust Factors

C0 - Static Load		87200 lbf 388000 N

C - Dynamic Load (Basic)		79700 lbf 355000 N

e - Geometry Factor		0.23

Y1 - Geometry Factor		2.90

Y2 - Geometry Factor		4.31

Engineering Seal Speed

Oil Lubrication - M/N Seal		1400 rpm

Oil Lubrication - T Seal		2400 rpm

Oil Lubrication - B/C/O Seal		1000 rpm

Grease Lubrication - M/N Seal		1400 rpm

Grease Lubrication - T Seal		2000 rpm

Grease Lubrication - B/C/O Seal		1000 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		0.0024

Eng Internal Radial Clearance - Max		0.0039

Pre Install Clearance Min		0.0024 in 0.060 mm

Pre Install Clearance Max		0.0039 in 0.100 mm

MORE IMAGES


	· Single Concentric Piloted Flange Cartridge - Dimensional Drawing

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 QAC18A308S, Single Concentric Piloted Flange Cartridge

Engineering Group

Bearing Number

Shaft Size

Shaft Size Type

Full Timken Part Number

Locking Style

Housing Construction

UPC Code

Dimension BC

Dimension B Exp

Dimension B Fix

Dimension C

Dimension D

Dimension E

Dimension F

Dimension G

Dimension H

Dimension J (Bolt Size)

Dimension KA

Dimension L Exp

Dimension L Fix

Dimension M

Dimension N

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