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 QAAF18A308S  

Part Number QAAF18A308S, Double Concentric Flange Block

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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
QAAF18A308SB
QAAF18A308SC
QAAF18A308SEB
QAAF18A308SEC
QAAF18A308SEM
QAAF18A308SEN
QAAF18A308SEO
QAAF18A308SET
QAAF18A308SM
QAAF18A308SN
QAAF18A308SO
QAAF18A308ST

Locking Style
Double Concentric

Housing Construction
Flange Block

UPC Code
0883450019705
0883450019712
0883450019736
0883450019743
0883450019750
0883450019767
0883450019774
0883450019781
0883450191067
0883450191234
0883450268424
0883450268592


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



 DOWNLOADS 

Bearing Life Calculation Tool

Primary Sealing
(PDF, 411KB)

Secondary Sealing
(PDF, 720KB)

TIMKEN® SPHERICAL ROLLER BEARING SOLID-BLOCK MOUNTED BEARINGS