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 QAAPX18A304S  

Part Number QAAPX18A304S, Double Concentric Four-Bolt Pillow 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 1/4 in

Shaft Size Type
Imperial

Full Timken Part Number
QAAPX18A304SB
QAAPX18A304SC
QAAPX18A304SEB
QAAPX18A304SEC
QAAPX18A304SEM
QAAPX18A304SEN
QAAPX18A304SEO
QAAPX18A304SET
QAAPX18A304SM
QAAPX18A304SN
QAAPX18A304SO
QAAPX18A304ST

Locking Style
Double Concentric

Housing Construction
Four-Bolt Pillow Block

UPC Code
0883450012256
0883450012263
0883450012270
0883450012287
0883450012294
0883450012300
0883450012317
0883450012324
0883450012331
0883450012348
0883450267649
0883450267861


Dimensions

Dimension A
4 in
101.6 mm

Dimension B
7.92 in
201.2 mm

Dimension C
5.13 in
130.3 mm

Dimension D Min
10.81 in
274.6 mm

Dimension D Max
12.19 in
309.6 mm

Dimension E
3 in
76.2 mm

Dimension F
15 in
381 mm

Dimension G
4.75 in
120.7 mm

Dimension H
1.5 in
38.1 mm

Dimension J (Bolt Size)
0.75 in
20 mm

Dimension L
4.97 in
126.2 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