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 QAAFL20A312S  

Part Number QAAFL20A312S, 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
22220

Shaft Size
3 3/4 in

Shaft Size Type
Imperial

Full Timken Part Number
QAAFL20A312SB
QAAFL20A312SC
QAAFL20A312SEB
QAAFL20A312SEC
QAAFL20A312SEM
QAAFL20A312SEN
QAAFL20A312SEO
QAAFL20A312SET
QAAFL20A312SM
QAAFL20A312SN
QAAFL20A312SO
QAAFL20A312ST

Locking Style
Double Concentric

Housing Construction
Flange Block


Dimensions

Dimension BC
10.75 in
273.1 mm

Dimension C
6 in
152.4 mm

Dimension D
8.39 in
213.1 mm

Dimension E
7.6 in
193 mm

Dimension F
9.5 in
241.3 mm

Dimension H
1.5 in
38.1 mm

Dimension J (Bolt Size)
1 in
24 mm

Dimension L Exp
5.29 in
134.4 mm

Dimension L Fix
5.21 in
132.3 mm

Dimension M
2.97 in
75.4 mm

Dimension N
4.12 in
104.6 mm

Dimension RAA
0.71 in
18 mm

Dimension SAA
5.92 in
150.4 mm

Dimension G
8.5 in
215.9 mm


Radial and Thrust Factors

C0 - Static Load
113000 lbf
502000 N

C - Dynamic Load (Basic)
97700 lbf
435000 N

e - Geometry Factor
0.24

Y1 - Geometry Factor
2.84

Y2 - Geometry Factor
4.23


Engineering Seal Speed

Oil Lubrication - M/N Seal
1200 rpm

Oil Lubrication - T Seal
2000 rpm

Oil Lubrication - B/C/O Seal
900 rpm

Grease Lubrication - M/N Seal
1200 rpm

Grease Lubrication - T Seal
1600 rpm

Grease Lubrication - B/C/O Seal
900 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
0.0030

Eng Internal Radial Clearance - Max
0.0047

Pre Install Clearance Min
0.0030 in
0.075 mm

Pre Install Clearance Max
0.0047 in
0.120 mm


 MORE IMAGES 

·  Double Concentric Four Bolt Square Flange Block - Dimensional Drawing



 DOWNLOADS 

Bearing Life Calculation Tool

Primary Sealing
(PDF, 280KB)

TIMKEN® SPHERICAL ROLLER BEARING SOLID-BLOCK MOUNTED BEARINGS



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