All Product Types > ENGINEERED BEARINGS > Mounted Bearings > Mounted Solid-Block Spherical Roller Bearings > Double Concentric Solid-Block Mounted Bearings > Double Concentric Two-Bolt Pillow Block > Part Number QAASN18A304S  

Part Number QAASN18A304S, Double Concentric Two-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
QAASN18A304SB
QAASN18A304SC
QAASN18A304SEB
QAASN18A304SEC
QAASN18A304SEM
QAASN18A304SEN
QAASN18A304SEO
QAASN18A304SET
QAASN18A304SM
QAASN18A304SN
QAASN18A304SO
QAASN18A304ST

Locking Style
Double Concentric

Housing Construction
Two-Bolt Pillow Block

UPC Code
0883450350785
0883450350792
0883450350808
0883450350815
0883450350822
0883450350839
0883450350846
0883450350853
0883450350860
0883450350877
0883450350884
0883450350891


Dimensions

Dimension A
3.94 in
100 mm

Dimension B
7.87 in
200 mm

Dimension C
5.12 in
130 mm

Dimension D Min
10.98 in
279 mm

Dimension D Max
11.5 in
292 mm

Dimension F
13.58 in
345 mm

Dimension G
3.39 in
86 mm

Dimension H
1.54 in
39 mm

Dimension J (Bolt Size)
0.75 in
20 mm

Dimension L
4.29 in
109 mm

Dimension M
2.59 in
65.8 mm

Dimension RAA
0.91 in
23 mm

Dimension SAA
5.2 in
132 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