Part Number QAFY18A308S, Single Concentric Round Flange Block On The Timken Company


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	Part Number QAFY18A308S, Single Concentric Round Flange Block

Timken-Mounted-Bearing-Single-Concentric-Round-Flange-Block

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Single Concentric Round Flange 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		22218

Shaft Size		3 1/2 in

Shaft Size Type		Imperial

Full Timken Part Number		QAFY18A308SB QAFY18A308SC QAFY18A308SEB QAFY18A308SEC QAFY18A308SEM QAFY18A308SEN QAFY18A308SEO QAFY18A308SET QAFY18A308SM QAFY18A308SN QAFY18A308SO QAFY18A308ST

Locking Style		Single Concentric

Housing Construction		Round Flange

UPC Code		0883450042307 0883450042314 0883450042345 0883450042352 0883450042369 0883450042376 0883450042383 0883450192040 0883450192200 0883450192361 0883450269407 0883450269568

Dimensions

Dimension BC		9.5 in 241.3 mm

Dimension C		5.13 in 130.3 mm

Dimension D		7.63 in 193.8 mm

Dimension E		6.72 in 170.7 mm

Dimension F		11.13 in 282.7 mm

Dimension H		1.13 in 28.7 mm

Dimension J (Bolt Size)		0.875 in 24 mm

Dimension KA		1.44 in 36.6 mm

Dimension L Exp		4.36 in 110.7 mm

Dimension L Fix		4.28 in 108.7 mm

Dimension M		2.59 in 65.8 mm

Dimension N		3.36 in 85.3 mm

Dimension RA		0.25 in 6.4 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

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 QAFY18A308S, Single Concentric Round Flange Block

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 F

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