Part Number QAAF18A303S, Double Concentric Flange Block On The Timken Company


All Product Types > ENGINEERED BEARINGS > Mounted Bearings > Mounted Solid-Block Spherical Roller Bearings > Double Concentric Solid-Block Mounted Bearings > Double Concentric Flange Block > Part Number QAAF18A303S


	Part Number QAAF18A303S, Double Concentric Flange Block

Timken-Mounted-Bearing-Double-Concentric-Four-Bolt-Square-Flange-Block

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Double Concentric Four Bolt Square 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 3/16 in

Shaft Size Type		Imperial

Full Timken Part Number		QAAF18A303SB QAAF18A303SC QAAF18A303SEB QAAF18A303SEC QAAF18A303SEM QAAF18A303SEN QAAF18A303SEO QAAF18A303SET QAAF18A303SM QAAF18A303SN QAAF18A303SO QAAF18A303ST

Locking Style		Double Concentric

Housing Construction		Flange Block

UPC Code		0883450118521 0883450118538 0883450118545 0883450118552 0883450118576 0883450118583 0883450118606 0883450118613 0883450118620 0883450118637 0883450118644 0883450118651

Dimensions

Dimension BC		9.91 in 251.7 mm

Dimension C		5.13 in 130.3 mm

Dimension D		7.63 in 193.8 mm

Dimension E		7 in 177.8 mm

Dimension F		8.63 in 219.2 mm

Dimension H		1.31 in 33.3 mm

Dimension J (Bolt Size)		0.75 in 20 mm

Dimension L Exp		4.3 in 109.2 mm

Dimension L Fix		4.22 in 107.2 mm

Dimension M		2.59 in 65.8 mm

Dimension N		3.31 in 84.1 mm

Dimension RAA		0.96 in 24.4 mm

Dimension SAA		5.18 in 131.6 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 QAAF18A303S, Double Concentric 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 L Exp

Dimension L Fix

Dimension M

Dimension N

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