Part Number QAAC18A308S, Double Concentric Piloted Flange Cartridge On The Timken Company


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	Part Number QAAC18A308S, Double Concentric Piloted Flange Cartridge

Timken-Mounted-Bearing-Double-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		QAAC18A308SB QAAC18A308SC QAAC18A308SEB QAAC18A308SEC QAAC18A308SEM QAAC18A308SEN QAAC18A308SEO QAAC18A308SET QAAC18A308SM QAAC18A308SN QAAC18A308SO QAAC18A308ST

Locking Style		Double Concentric

Housing Construction		Piloted Flange Cartridge

UPC Code		0883450016209 0883450016216 0883450016230 0883450016247 0883450016254 0883450016261 0883450016278 0883450016285 0883450193573 0883450193764 0883450270762 0883450270939

Dimensions

Dimension BC		8.63 in 219.2 mm

Dimension C		5.125 in 130.2 mm

Dimension D		7.38 in 187.5 mm

Dimension E		6.1 in 154.9 mm

Dimension B Exp		2.96 in 75.2 mm

Dimension B Fix		2.88 in 73.2 mm

Dimension F		10.34 in 262.6 mm

Dimension H		1 in 25.4 mm

Dimension J (Bolt Size)		0.75 in 20 mm

Dimension M		2.59 in 65.8 mm

Dimension L Exp		4.27 in 108.5 mm

Dimension L Fix		4.19 in 106.4 mm

Dimension RAA		1 in 25.4 mm

Dimension SAA		5.19 in 131.8 mm

Dimension G		7.375 in 187.3 mm

Dimension N		1.31 in 33.3 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		0.060 in 0.0024 mm

Pre Install Clearance Max		0.100 in 0.0039 mm

MORE IMAGES


	· Double 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 QAAC18A308S, Double 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 C

Dimension D

Dimension E

Dimension B Exp

Dimension B Fix

Dimension F

Dimension H

Dimension J (Bolt Size)

Dimension M

Dimension L Exp

Dimension L Fix

Dimension RAA

Dimension SAA

Dimension G

Dimension N

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