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All Product Types > ENGINEERED BEARINGS > Mounted Bearings > Mounted Solid-Block Spherical Roller Bearings > Double Concentric Solid-Block Mounted Bearings > Double Concentric Take-Up Block > Part Number QAATU18A303S  
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Part Number QAATU18A303S, Double Concentric Take-Up Block



 



Unit of Measure: Imperial Metric Both

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

QAATU18A303SB
QAATU18A303SC

QAATU18A303SEB

QAATU18A303SEC

QAATU18A303SEM

QAATU18A303SEN

QAATU18A303SEO

QAATU18A303SET

QAATU18A303SM

QAATU18A303SN

QAATU18A303SO

QAATU18A303ST

Locking Style

Double Concentric

Housing Construction

Take-Up

UPC Code

0883450323468
0883450323475

0883450323482

0883450323499

0883450323505

0883450323512

0883450323529

0883450323536

0883450323543

0883450323550

0883450323567

0883450323574


Dimensions

Dimension A1

3.63 in
92.2
mm

Dimension C

1 in
25.4
mm

Dimension D

7.63 in
193.8
mm

Dimension E

6.81 in
173
mm

Dimension F

1.81 in
46
mm

Dimension G

1.88 in
47.8
mm

Dimension J

4.88 in
124
mm

Dimension L

10.12 in
257
mm

Dimension M

2.59 in
65.8
mm

Dimension N

4.22 in
107.2
mm

Dimension P

6.25 in
158.8
mm

Dimension S

1.81 in
46
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

0.08 in
2.03
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

Eng Seal Temperatures

TIMKEN® SPHERICAL ROLLER BEARING SOLID-BLOCK MOUNTED BEARINGS


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