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Spherical Roller Bearing Solid-Block Housed Units
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Housed Unit Bearings
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Spherical Roller Bearing Solid-Block Housed Units
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Timken Part Number QAAFY18A307S
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Timken Part Number QAAFY18A307S, Double Concentric
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Spherical Roller Bearing Solid-Block Housed Units feature rugged cast-steel housings and double-row spherical roller bearings. Designed to offer protection from contaminants, these housed units accommodate shaft sizes from 1-7/16” to 7” (40 mm to 180 mm) and most metric sizes. This product line was formerly known as “QM Blue Brute Bearings.”
Note:
Some products have both imperial and metric dimensions. Selecting “Metric” below will hide the imperial dimensions. Selecting “Both” will display all dimensions.
Unit of Measure:
Imperial |
Metric |
Both
Specifications
·
Dimensions
·
Radial and Thrust Factors
·
Eng Seal Speed
·
Eng Bearing Attributes
·
Eng Internal Radial Clearance
Specifications
Engineering Group
Mounted Bearing
Bearing Number
22218
Shaft Size
3-7/16 in
Shaft Size Type
Imperial
Weight
42.000 lb
Locking Style
Double Concentric
Full Timken Part Number
QAAFY18A307S
QAAFY18A307SB
QAAFY18A307SC
QAAFY18A307SEB
QAAFY18A307SEC
QAAFY18A307SEM
QAAFY18A307SEN
QAAFY18A307SEO
QAAFY18A307SET
QAAFY18A307SM
QAAFY18A307SN
QAAFY18A307SO
QAAFY18A307ST
Dimensions
Dimension BC
9.50 in
Dimension C
5.13 in
Dimension D
7.630 in
Dimension E
6.7200 in
Dimension F
11.130 in
Dimension H
1.1300 in
Dimension J
0.8750 in
Dimension L Exp
4.36 in
Dimension L Fix
4.28 in
Dimension M
2.59 in
Dimension N
3.36 in
Dimension RAA
0.90 in
Dimension SAA
5.18 in
Radial and Thrust Factors
C - Dynamic Load (Basic)
79700 lb
355 kN
C0 - Dynamic Load (Static)
87200 lb
388 kN
e - Geometry Factor
0.23
Y1 - Geometry Factor
2.9
Y2 - Geometry Factor
4.31
Eng 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
Eng Bearing Attributes
Float
0.083 in
2.108 mm
Shaft Tolerance
0.003 in
0.076 mm
Eng Internal Radial Clearance
Eng Internal Radial Clearance - Min
0.0024
Eng Internal Radial Clearance - Max
0.0039
Pre Install Clearance Min
0.060 mm
Pre Install Clearance Max
0.100 mm
DOWNLOADS
Eng Seal Temperatures
(JPG, 26KB)
Eng Mounted Bearing Load Ratings
(JPG, 31KB)
QAAFY18A307S.dxf
QAAFY18A307S.igs
QAAFY Series IPart.ipt
Bearing Life Calculator
Bearing Life Calculator
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The Timken Company. ©
The Timken Company. 
©
The Timken Company.