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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 Four-Bolt Pillow Block > Part Number QAAPF18A303S  
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Part Number QAAPF18A303S, Double Concentric Four-Bolt Pillow 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
QAAPF18A303SB
QAAPF18A303SC
QAAPF18A303SEB
QAAPF18A303SEC
QAAPF18A303SEM
QAAPF18A303SEN
QAAPF18A303SEO
QAAPF18A303SET
QAAPF18A303SM
QAAPF18A303SN
QAAPF18A303SO
QAAPF18A303ST

Locking Style
Double Concentric

Housing Construction
Four-Bolt Pillow Block

UPC Code
0883450320337
0883450320344
0883450320351
0883450320368
0883450320375
0883450320382
0883450320399
0883450320405
0883450320412
0883450320429
0883450320436
0883450320443


Dimensions

Dimension A
3.75 in
95.3 mm

Dimension B
7.69 in
195.3 mm

Dimension C
5.13 in
130.3 mm

Dimension D Min
8.88 in
225.6 mm

Dimension D Max
10.88 in
276.4 mm

Dimension E
2 in
50.8 mm

Dimension F
12.3 in
312.4 mm

Dimension G
3.75 in
95.3 mm

Dimension H
1.56 in
39.6 mm

Dimension J (Bolt Size)
0.753 in
20 mm

Dimension L
4.47 in
113.5 mm

Dimension M
2.59 in
65.8 mm

Dimension RAA
0.84 in
21.3 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


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