S T A N D A R D
P A R T S
C A T A L O G
A N D
Engineering Design Guide
E l e c t r o n i c s W e b s i t e : w w w. e a r s h o c k a n d v i b e . c o m
C o m p a n y W e b s i t e : w w w. e a r s c . c o m
Toll-Free Solutions Hotline
(877) EAR-IDEA
(327-4332)
SOLUTION ENGINEERING FOR NOISE,
BROADEST LINES OF MATERIALS AND PARTS
ISODAMP ® C-1000 SERIES ELASTOMERS
• Optimized shock and vibration control via high internal damping
• Control shock pulses in minimal sway space
• Three temperature-tuned formulations
TYPICAL APPLICATIONS:
• Hard disk drive mounting in computers, DVRs and MP3 players
• Fan and blower mounting (tool-less) for noise control
• Low rebound bumpers, crash stops and shock pads
• Stepper motor mounting
ISODAMP ® C-8002 SERIES ELASTOMERS
• Environmentally-friendly, halogen-free formulation
• Optimized shock and vibration control via high internal damping
• Control shock pulses in minimal sway space
TYPICAL APPLICATIONS:
• Hard disk drive mounting in computers, DVRs and MP3 players
• Fan and blower mounting (tool-less) for noise control
• Low rebound bumpers, crash stops and shock pads
• Stepper motor mounting
VERSADAMP ™ 2000 SERIES ELASTOMERS
• Provide uniform performance over a broad temperature
range (-40C to 125C)
• Adjustable damping level from moderate to high
• Adjustable durometer (40 to 74 Shore A)
• Adjustable properties enable custom-tuned dynamic response
• 10 standard formulations
TYPICAL APPLICATIONS:
• Circuit board snubbers for portable electronics
• Hard disk drive protection in portable electronics
• LCD shock protection frames and bezels
• External bumpers for ruggedized portable electronics
• Microphone, speaker and other transducer isolation boots
• Isolation of vibration sources in automotive applications
ISOLOSS ® HD THERMOSET ELASTOMER
• High internal damping
• Excellent resistance to creep and compression set
• Can be metal-bonded during molding
TYPICAL APPLICATIONS:
• Rotational vibration control for hard disk drives in servers and
mass storage units (hot swap and fixed carrier designs)
• Isolation mounts for hard disk drive manufacturing test racks
• Standard and custom sandwich mounts
2
E-A-R Specialty Composites provides a wide range of materials
and component options for controlling complex noise, vibration,
motion and mechanical shock. Standard components include
grommets, fan mounts, bushings and equipment feet. This
extensive offering of standard parts will often provide an
“off-the-shelf” solution that meets design requirements.
In addition, E-A-R offers the industry’s broadest range of
engineered elastomer platforms specifically developed to
address mechanical energy control challenges that are
common in today’s complex OEM product designs.
Designers can choose from four standard materials platforms—
ISODAMP C-1000 Series elastomers, ISODAMP C-8002 Series
elastomers, VersaDamp 2000 Series TPEs and ISOLOSS HD
thermoset polyurethanes—to obtain precisely the right
combination of performance and physical properties.
The ISODAMP, ISOLOSS and VersaDamp material platforms are
highly damped elastomers, exhibiting extremely low rebound
characteristics. This ensures extremely low amplification at
resonance and rapid settling to equilibrium after impulsive
shock or vibration input.
In addition, the VersaDamp platform offers adjustable damping
and stiffness, enabling the design engineer to custom-tune a part’s
dynamic response. VersaDamp TPEs also offer an extended service
temperature range, making them ideal for portable electronics
and automotive applications.
E-A-R’s ISODAMP C-8002 Series thermoplastic molding material
combines excellent damping performance and mechanical
strength with compliance to environmental and other high
cleanliness specifications, for high performance solutions
in a wide variety of molded parts applications.
Additional features and typical applications for each of the
materials platforms are listed at left. More detailed information
on E-A-R’s full line of elastomers is contained in materials
summary sheets and technical data sheets available directly
from the company, on the Website at www.earsc.com or on
the electronics Website at www.earshockandvibe.com.
Ta b l e o f C o n t e n t s
4 .
7. .
8. .
9. .
10.
13
15.
16.
18.
19.
20.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
ISODAMP & VersaDamp Grommets
ISODAMP & VersaDamp Bushings
ISODAMP Equipment Mounts
ISODAMP Fan Mounts & Shoulder Bolts
Performance Calculation Guide
ISOLOSS Grommets & Mounts
ISOLOSS Performance Calculation Guide
Installation Hints
Reduced Frequency Nomograms
Typical Materials Properties
Elastomer Comparison Guide
25
Figure 1
Natural rubber
20
15
Transmissibility (dB)
Neoprene
VIBRATION, SHOCK, CUSHIONING
10
5
VersaDamp
0
1
2
-5
-10
ISODAMP
-15
-20
-25
Frequency Ratio
F/F s(log scale)
Poorly damped isolators can amplify incoming
vibration, causing damage and excess noise.
E-A-R isolators minimize this concern and better
accommodate variable-frequency, impulsive or
broadband vibration sources.
THE DIFFERENCE IS THE DAMPING
A poorly damped isolator (typically made from natural rubber
or silicone), that is soft enough for good vibration isolation,
may require more sway space for deflection during a shock
input than the product’s design can provide. So a stiffer isolator
may be needed to prevent crashing or bottoming out, but this
could have a negative effect on vibration performance. E-A-R’s
highly damped elastomers help mitigate this common conflict.
Traditional practice has dictated that the natural frequency of
an isolation mount be well below the operating frequency of
the vibration source. This tactic seeks to avoid a situation where
the source’s operational frequency is near the mount’s natural
frequency, causing excessive amplification of the transmitted
vibration. In practice, though, it is often difficult to avoid
excitation of the isolation system’s resonance, especially
in complex systems that cycle on and off, change speed
or produce broadband, multi-frequency vibration.
With E-A-R’s highly damped elastomers, vibration amplification
is minimized. Figure 1 illustrates how an elastomer’s loss factor
(m, a measure of hysteretic damping) influences vibration
amplification. E-A-R’s elastomers, with material loss factors
near 1.0, exhibit a maximum amplification of only 3 to 5 dB
(1.4X to 1.8X). Natural rubber or silicone isolators, with loss
factors as low as 0.05, can exhibit excessive amplification as
high as 25dB (18X). This reduced amplification minimizes
the traditional need for an isolation system with a low natural
frequency. As a result, a stiffer mount can be used to better
accommodate shock requirements while still providing the
vibration isolation performance necessary for most noise
control applications.
Shock Protection: Reducing Space, Time and Magnitude
For most OEM shock protection applications, E-A-R’s highly
damped elastomers offer two important advantages:
Figures 2 and 3 illustrate how the loss factor of an isolator
material can influence shock response (transmitted acceleration
and peak deflection). E-A-R’s highly damped elastomers, with
loss factors near 1.0, provide lower peak acceleration and
deflection resulting in a higher degree of shock protection
within a smaller package design. Poorly damped elastomers
often require twice as much sway space to provide the same
level of shock protection. This benefit is critical given the tight
space constraints that are common in today’s smaller portable
electronic devices and component-dense OEM products.
In addition, as shown in Figures 2 and 3, E-A-R elastomers provide
a quick return to equilibrium while the poorly damped system
continues to oscillate and flex. Post-shock, resonant oscillation
is a primary contributor to electromechanical system performance
loss and component fatigue failure in portable electronic devices.
E-A-R’s highly damped elastomers help to reduce these post-shock
oscillations, increase product performance and extend product life.
Shock Response
120
Input Pulse
Figure 2
Lightly Damped Isolator Response (Silicone, Rubber, etc.)
80
η ≈0.1
E-A-R elastomers result in
lower peak Gs and faster
settling, which can help
to increase product
performance.
m
Acceleration (G)
Optimized Shock and Vibration Control
Vibration is typically characterized by continuous oscillatory motion
of relatively small amplitude, while shock commonly features a
relatively large, sudden change in acceleration due to an applied
dynamic force. Consequently, vibration and shock considerations
often place conflicting requirements on an isolation system.
• Lower peak acceleration (Gs) and displacement (sway) response
to shock input, compared to poorly damped elastomers.
• Dramatically reduced settling time after shock input.
40
ISODAMP
Response
0
η ≈1.0
m
-40
-80
-120
0
0.005
0.01
0.015
0.02
Time (sec)
Displacement Response
0.04
Figure 3
0.03
Displacement (in)
E-A-R damped elastomers offer important advantages over
poorly damped materials, such as natural and synthetic rubber,
silicone and commodity TPEs. These advantages are especially
important when attempting to control noise, shock and vibration in today’s complex and component-dense OEM products.
E-A-R elastomers reduce
sway space requirements
by nearly half, allowing for
compact shock protection
systems.
Lightly Damped Isolator Response
(Silicone, Rubber, etc.)
η ≈0.1
m
0.02
0.01
ISODAMP
Response
η ≈1.0
m
0
-0.01
-0.02
-0.03
-0.04
0
0.005
0.01
Time (sec)
0.015
0.02
3
ISODAMP & VERSADAMP GROMMETS
PERFORMANCE GRAPH
3.0
G
F
B
E
H
STIFFNESS RATIO
Ribbed
Symmetric
C
1.0
A
D
Figure 1
0.1
0.1
Symmetric,
Internally Ribbed
F
B
E
H
C
A
I N S TA L L AT I O N H I N T S
1.0
LOAD RATIO
3.0
0.3
1.0
LOAD RATIO
3.0
3.0
STIFFNESS RATIO
G
0.3
1.0
D
Figure 2
SEE PAGE 16
0.1
0.1
S Y M M E T R I C / S Y M M E T R I C I N T E R N A L LY R I B B E D
Figure No. Part No.
Figure 1
Figure 1
Figure 1
Figure 1
Figure 2
Figure 2
Figure 2
Figure 2
Axial
Load
Factor
(lb)
Stiffness
Factor
(lb/in)
1.6
1.6
1.6
1.6
1.7
1.8
1.7
1.8
2091
5130
3361
8200
1988
1911
1988
1911
G-401
G-402
G-403
G-404
G-410
G-411
G-412
G-414
Radial
Load (lb)
Load Stiffness
Factor Factor
(lb)
(lb/in)
A
B
C
Recommended
Maximum
Plate
Thckns.
Hole
Diam.
Inside
Diam.
6.0
6.0
6.0
6.0
3.0
6.0
3.0
6.0
.063
.125
.063
.125
.057
.063
.031
.043
.375
.375
.375
.375
.250
.375
.250
.375
.224
.226
.276
.281
.158
.188
.158
.188
0.9
1.8
0.9
1.8
0.5
0.9
0.5
0.9
6341
9719
7048
9836
2683
1153
2683
1153
Dimensions (inches)
D
E
Overall Outside
Height
Diam.
.313
.375
.313
.375
.230
.323
.230
.323
.563
.563
.625
.625
.379
.563
.379
.563
F
G
H
Edge
Radius
Rib
Height
Rib
Width
.125
.125
.125
.125
.050
.130
.050
.130
.063
.063
.063
.063
.040
.063
.040
.063
.063
.063
.063
.063
.050
.063
.050
.063
PERFORMANCE GRAPH
3.0
Asymmetric
STIFFNESS RATIO
F
A
G
CE
B
H
I
D
ASYMMETRIC
Part No.
G-430
G-431
Axial
Load
Factor
(lb)
Stiffness
Factor
(lb/in)
1.2
1.8
3724
3789
J
0.1
0.1
Radial
Load (lb)
Load Stiffness
Factor Factor
(lb)
(lb/in)
A
B
C
Recommended
Maximum
Plate
Thckns.
Hole
Diam.
Inside
Diam.
5.0
8.0
.055
.055
.375
.560
.180
.172
0.8
1.2
2704
2610
Dimensions given here are nominal. Exact specification print available on request.
Toll-free hotline
(877) EAR-IDEA
(327-4332)
www.earshockandvibe.com www.earsc.com
E-mail: solutions@earsc.com
4
•
0.3
1.0
LOAD RATIO
3.0
Dimensions (inches)
For C-1002 material, indicate “-1” after part number (e.g. G-401-1)
For C-1105 material, indicate “-2” after the part number (e.g. G-401-2)
For C-1100 material, indicate “-3” after the part number (e.g. G-401-3)
For C-8002 material, indicate “-8” after the part number (e.g. G-401-8)
For VersaDamp material, indicate “-formulation number” after the part number (e.g. G-401-2325)
Aearo Technologies
1.0
D
E
F/G
H/I
J
Overall Outside
Lg./Sm. Lg./Sm.Rib Rib
Height
Diam. Flg. Height Height Width
.395
.390
.560 .210/.130 .100/.065 .062
.750 .210/.125 .100/.065 .062
C-1002
Grommet Color
Peak Performance Temp.
Range at 1000 Hz
C-1105
C-1100
C-8002
VersaDamp
Blue
Turquoise Yellow
Sky Blue
Black
55F-105F 80F-130F 95F-145F 62F-105F -40F-122F
(13C-41C) (27C-54C) (35C-63C) (17C-41C) (-40C-50C)
*Refer to page 19 for additional temperature data.
7911 Zionsville Road
Indianapolis, IN 46268
Phone (317) 692-1111
Fax (317) 692-3111
650 Dawson Drive
Newark, DE 19713
Phone (302) 738-6800
Fax (302) 738-6811
a 3M company
ISODAMP & VERSADAMP GROMMETS
Symmetric,
Low-Load F
PERFORMANCE GRAPH
3.0
C
B
STIFFNESS RATIO
E
G
A
Figure 1
D
B
H
B
E
C
C
Figure 2
FG
SYMMETRIC, LOW-LOAD
Figure No. Part No.
Stiffness
Factor
(lb/in)
0.8
0.2
0.2
725
381
381
G-427
G-461
G-462
0.3
1.0
LOAD RATIO
AA
Radial
Load (lb)
Load Stiffness
Factor Factor
(lb)
(lb/in)
Recommended
Maximum
0.7
0.2
0.2
Non-Ribbed
3.0
Dimensions (inches)
A
3475
392
392
B
Plate
Hole
Thckns. Diam.
1.5
0.3
0.3
.049
.037
.047
.312
.298
.304
C
D
E
Inside
Diam.
Overall Outside
Height
Diam.
.180
.157
.153
.194
.271
.276
F
G
Rib
Height
Rib
Width
.025
.063
.063
.056
.051
.051
.440
.393
.393
I N S TA L L AT I O N H I N T S
SEE PAGE 16
D
E C
PERFORMANCE GRAPH
3.0
Symmetric
A
STIFFNESS RATIO
Figure 1
Figure 2
Figure 2
0.1
0.1
FE
D
D
Axial
Load
Factor
(lb)
1.0
F
B
1.0
0.1
0.1
0.3
1.0
LOAD RATIO
3.0
SYMMETRIC
Part No.
G-501
G-502
G-503
G-504
G-505
G-506
G-507
Axial
Load
Factor
(lb)
Stiffness
Factor
(lb/in)
4.2
4.3
2.1
3.0
4.3
3.3
9.0
17983
12985
6640
12744
14745
12805
7775
Radial
Load Stiffness
Factor Factor
(lb)
(lb/in)
0.5
0.8
0.5
0.7
0.8
0.8
1.4
40450
10640
14495
9170
15099
7252
9739
Load (lb)
Dimensions (inches)
A
Recommended
Maximum
17.0
17.0
10.0
13.0
17.0
14.0
40.0
B
C
Plate
Hole
Thckns. Diam.
.060
.063
.054
.063
.062
.043
.070
.360
.338
.244
.309
.375
.319
.503
Inside
Diam.
.187
.182
.190
.183
.190
.177
.277
D
E
Overall Outside
Height Diam.
.120
.182
.306
.187
.175
.220
.396
.500
.500
.385
.437
.500
.460
.751
F
G
H
Edge
Radius
Lg. Flg.
Height
Sm. Flg
Height
n/a
n/a
.020
n/a
n/a
.020
.050
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
C-1100
C-8002
For C-1002 material, indicate “-1” after part number (e.g. G-401-1)
For C-1105 material, indicate “-2” after the part number (e.g. G-401-2)
For C-1100 material, indicate “-3” after the part number (e.g. G-401-3)
For C-8002 material, indicate “-8” after the part number (e.g. G-401-8)
For VersaDamp material, indicate “-formulation number” after the part number (e.g. G-401-2325)
Grommet Color
Peak Performance Temp.
Range at 1000 Hz
Dimensions given here are nominal. Exact specification print available on request.
*Refer to page 19 for additional temperature data.
Toll-free hotline
(877) EAR-IDEA
(327-4332)
www.earshockandvibe.com www.earsc.com
E-mail: solutions@earsc.com
Aearo Technologies
•
C-1002
C-1105
VersaDamp
Blue
Turquoise Yellow
Sky Blue
Black
55F-105F 80F-130F 95F-145F 62F-105F -40F-122F
(13C-41C) (27C-54C) (35C-63C) (17C-41C) (-40C-50C)
7911 Zionsville Road
Indianapolis, IN 46268
Phone (317) 692-1111
Fax (317) 692-3111
650 Dawson Drive
Newark, DE 19713
Phone (302) 738-6800
Fax (302) 738-6811
a 3M company
5
ISODAMP & VERSADAMP GROMMETS
PERFORMANCE GRAPH
Non-ribbed
3.0
STIFFNESS RATIO
Symmetric,
Radiused-Edge
F
A
E
C
B
D
0.1
0.1
Figure 1
Asymmetric
STIFFNESS RATIO
A
H
C
E
B
D
Axial
Load
Factor
(lb)
Stiffness
Factor
(lb/in)
5.3
9.8
6.5
6.6
5593
8467
5844
11465
G-521
G-511
G-512
G-513
Radial
Load (lb)
Load Stiffness
Factor Factor
(lb)
(lb/in)
Recommended
Maximum
0.9
1.4
1.9
1.4
1.0
LOAD RATIO
3.0
0.3
1.0
LOAD RATIO
3.0
1.0
0.1
0.1
SYMMETRIC, RADIUS-EDGE / ASYMMETRIC
Figure No. Part No.
0.3
3.0
G
Figure 2
Figure 1
Figure 2
Figure 2
Figure 2
1.0
Dimensions (inches)
A
7470
5159
6951
12687
B
C
Plate
Hole
Thckns. Diam.
25.0
40.0
26.0
40.0
.062
.063
.115
.078
.375
.562
.437
.500
D
Inside
Diam.
E
Overall Outside
Height
Diam.
.270
.180
.245
.304
.325
.395
.620
.500
.625
.753
.625
.750
F
G
H
Edge
Radius
Lg. Flg.
Height
Sm. Flg.
Height
.125
n/a
n/a
n/a
n/a
.214
.380
.290
n/a
.118
.125
.132
PERFORMANCE GRAPH
3.0
STIFFNESS RATIO
I N S TA L L AT I O N H I N T S
Shear
SEE PAGE 16
D
E
C
BG
F
0.1
0.1
SHEAR
Part No.
G-601
Axial
Radial
Load (lb)
Load Stiffness
Factor
Factor
(lb)
(lb/in)
Load Stiffness
Factor Factor
(lb)
(lb/in)
Recommended
Maximum
1.8
382
2.1
2.0
.056
Dimensions given here are nominal. Exact specification print available on request.
Toll-free hotline
(877) EAR-IDEA
(327-4332)
www.earshockandvibe.com www.earsc.com
E-mail: solutions@earsc.com
6
•
B
C
Plate
Hole
Thckns. Diam.
For C-1002 material, indicate “-1” after part number (e.g. G-401-1)
For C-1105 material, indicate “-2” after the part number (e.g. G-401-2)
For C-1100 material, indicate “-3” after the part number (e.g. G-401-3)
For C-8002 material, indicate “-8” after the part number (e.g. G-401-8)
For VersaDamp material, indicate “-formulation number” after the part number (e.g. G-401-2325)
Aearo Technologies
0.3
1.0
LOAD RATIO
3.0
Dimensions (inches)
A
721
1.0
.560
Inside
Diam.
.248
D
E
F
Overall Outside
Height
Diam.
.375
.750
n/a
C-1002
Grommet Color
Peak Performance Temp.
Range at 1000 Hz
G
Flange Boss Out.
Thickns.
Diam.
C-1105
n/a
C-1100
C-8002
VersaDamp
Blue
Turquoise Yellow
Sky Blue
Black
55F-105F 80F-130F 95F-145F 62F-105F -40F-122F
(13C-41C) (27C-54C) (35C-63C) (17C-41C) (-40C-50C)
*Refer to page 19 for additional temperature data.
7911 Zionsville Road
Indianapolis, IN 46268
Phone (317) 692-1111
Fax (317) 692-3111
650 Dawson Drive
Newark, DE 19713
Phone (302) 738-6800
Fax (302) 738-6811
a 3M company
ISODAMP & VERSADAMP BUSHINGS
Ribbed Bushings
PERFORMANCE GRAPH
G
3.0
STIFFNESS RATIO
D
H
R-444
E C
Ribbed
A
B
B-434
E
0.1
0.1
C
0.3
1.0
LOAD RATIO
D
H
3.0
G
D
D
C
R-445
E
H
Part No.
R-444
B-434
R-445
B-435
F
1.0
Axial*
Load
Factor
(lb)
Stiffness
Factor
(lb/in)
2.1
2.1
6.3
6.3
1192
1192
650
650
G
Radial*
1.5
1.5
2.5
2.5
A
C
Load (lb)
Load Stiffness
Factor
Factor
(lb)
(lb/in)
B-435
BE
Dimensions (inches)
A
B
C
D
E
F
G
H
Recommended
Maximum
Shank
Height
Shank
Diam.
Inside
Diam.
Overall
Height
Flange
Diam.
Flange
Height
Rib
Height
Rib
Width
10.0
10.0
25.0
25.0
n/a
.313
n/a
.544
n/a
.469
n/a
.473
.460 .250 .813
.260 .563 .813
.457 .520 1.000
.260 1.060 1.000
n/a
.250
n/a
.516
.078
.078
.132
.132
.085
.085
.125
.135
1095
1095
1000
1000
* Normalized data using rings and bushings together
Non-ribbed
I N S TA L L AT I O N H I N T S
SEE PAGE 16
D
B
C
0.1
0.1
Axial
Radial
1.0
LOAD RATIO
3.0
Dimensions (inches)
Load
Factor
(lb)
Stiffness
Factor
(lb/in)
Load
Factor
(lb)
Stiffness
Factor
(lb/in)
A
B
C
D
E
F
G
H
Recommended
Maximum
Shank
Height
Shank
Diam.
Inside
Diam.
Overall
Height
Flange
Diam.
Flange
Height
Rib
Height
Rib
Width
4.1
9.5
28.5
20235
30725
30500
3.5
4.2
5.0
15575
20772
11500
17.0
40.0
100.0
.120
.139
.085
.360
.420
.750
.189
.271
.427
.175
.259
.325
.500
.750
1.265
.055
.120
.240
n/a
n/a
n/a
n/a
n/a
n/a
Dimensions given here are nominal. Exact specification print available on request.
Toll-free hotline
(877) EAR-IDEA
(327-4332)
www.earshockandvibe.com www.earsc.com
E-mail: solutions@earsc.com
•
0.3
Load (lb)
For C-1002 material, indicate “-1” after part number (e.g. G-401-1)
For C-1105 material, indicate “-2” after the part number (e.g. G-401-2)
For C-1100 material, indicate “-3” after the part number (e.g. G-401-3)
For C-8002 material, indicate “-8” after the part number (e.g. G-401-8)
For VersaDamp material, indicate “-formulation number” after the part number (e.g. G-401-2325)
Aearo Technologies
1.0
A
Part No.
B-531
B-532
B-533
STIFFNESS RATIO
F
E
PERFORMANCE GRAPH
3.0
Non-ribbed Bushings
C-1002
Grommet Color
Peak Performance Temp.
Range at 1000 Hz
C-1105
C-1100
C-8002
VersaDamp
Blue
Turquoise Yellow
Sky Blue
Black
55F-105F 80F-130F 95F-145F 62F-105F -40F-122F
(13C-41C) (27C-54C) (35C-63C) (17C-41C) (-40C-50C)
*Refer to page 19 for additional temperature data.
7911 Zionsville Road
Indianapolis, IN 46268
Phone (317) 692-1111
Fax (317) 692-3111
650 Dawson Drive
Newark, DE 19713
Phone (302) 738-6800
Fax (302) 738-6811
a 3M company
7
ISODAMP EQUIPMENT MOUNTS
B
A
C - 1 0 0 2 M O U N T I N G PA D S
Part No.
MP-506
MP-512
MP-725
MP-1025
Load (lb)
Dimensions (inches)
A
B
C
D
E
F
Recommended
Maximum
Diam.
Overall
Height
Inside
Diam.
Overall
Height
Outside
Diam.
Bolt Flg.
Height
15.0
15.0
30.0
30.0
.500
.500
.743
0.98
.060
.125
.260
.240
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
E
B
C
C-1002 MOUNTING FEET
A
D
Part No.
Load (lb)
Dimensions (inches)
A
Recommended
Maximum
MF-1010
MF-1010PSA
B
Bolt Flg. Bolt Flg.
Height
Diam.
15.0
15.0
.270
.270
.493
.493
C
D
E
F
Inside
Diam.
Overall
Height
Outside
Diam.
Bolt Flg.
Height
.123
.123
.521
.521
.982
.982
n/a
n/a
F
BE
C
C-1002 MOUNTING FEET
Part No.
L-020
L-021
L-030
L-031
A
D
Load (lb)
Dimensions (inches)
A
B
C
D
E
F
Recommended
Maximum
Shank
Height
Shank
Diam.
Inside
Diam.
Mount
Height
Mount
Diam.
Bolt Flg.
Height
20.0
20.0
20.0
20.0
.215
n/a
.215
n/a
.500
n/a
.509
n/a
.194
.194
.325
.320
.755
.755
.755
.755
1.502
1.502
1.502
1.502
.410
.410
.410
.410
B E
C
A
C-1002 EQUIPMENT MOUNTS
Part No.
ML-4250
ML-42100
ML-42200
ML-42500
D
Load (lb)
Dimensions (inches)
A
B
C
D
E
F
Recommended
Maximum
Shank
Height
Shank
Diam.
Inside
Diam.
Mount
Height
Mount
Diam.
Bolt Flg.
Height
70.0
140.0
300.0
700.0
.125
.188
.260
.355
.500
.750
1.010
1.000
.327
.443
.575
.549
.625
.820
1.007
1.385
1.172
1.656
2.371
3.667
n/a
n/a
n/a
n/a
Dimensions given here are nominal. Exact specification print available on request.
Toll-free hotline
(877) EAR-IDEA
(327-4332)
www.earshockandvibe.com www.earsc.com
E-mail: solutions@earsc.com
Aearo Technologies
8
•
7911 Zionsville Road
Indianapolis, IN 46268
Phone (317) 692-1111
Fax (317) 692-3111
650 Dawson Drive
Newark, DE 19713
Phone (302) 738-6800
Fax (302) 738-6811
a 3M company
ISODAMP FAN MOUNTS
F-340
C
F-344
Dimensions (mm)
▲
▲
B
B
C
A
F-340
F-344
F-345
F-347
A
F-345
F-347
D
Suggested Fan Sizes (mm)
A
B
C
D
Fan Hole
Diam
Fan Hole
Depth
Plate
Thickness
Plate Hole
Diam
Flange
Thickness
Hole
Diameter
2.5
4.4
3.5
4.4
5.0
3.0
3.8
4.5
.80
1.3
1.3
0.8
2.75
4.4
3.5
4.5
4.5-5.5
2.5-3.5
3.3-4.3
3.9-5.0
2.5-3.5
3.8-4.7
3.9-5.3
3.7-4.7
D
D
I N S TA L L AT I O N H I N T S
▲
▲
▲
▲
D
B
C
Part No.
SEE PAGE 16 & 17
B
C
A
A
S H O U L D E R B O LT S
Material: low-carbon steel with zinc chromate coating
Part No.
SB-4102
SB-4105
SB-4107
SB-4112
SB-4114
SB-4118
Grommet
Dimensions (inches)
G-410
G-410
G-410
G-411
G-411
G-411
A
A
D
F
G
Head
+ .020
Shoulder Length
+ .005
Shoulder
+ .0025
Thread
.350
.350
.350
.500
.500
.500
.214
.214
.214
.300
.300
.250
.161
.161
.161
.196
.194
.188
6-32 UNC-2A
M3-0.5
M3-0.5
6-32 UNC-2A
M4-0.7
6-32 UNC-2A
D
E
F
G
ISODAMP & VERSADAMP ISOLATORS
Plug Grommet
E
F
B
E
E
Pin Grommet
Corner Bumper
AG
F
B
C
A
D
C
B
C
B
A
C
H
D
D
D
E
Family
Product
Dimensions (inches)
B
C
D
A
I S O D A M P / Ve r s a D a m p
PLUG GROMMETS
P-410
P-411
P-415
Plate
Thckns.
.057
.063
.039
A
Plate
Thckns.
PIN GROMMETS
PG-100
1.5
A
CORNER BUMPERS
CB-100
CB-101
Hole
Diam.
Hole
Diam.
Toll-free hotline
(877) EAR-IDEA
(327-4332)
www.earshockandvibe.com www.earsc.com
E-mail: solutions@earsc.com
Pin
Diam.
Grommet
Height
6.4
2.5
5.0
Dimensions (mm)
B
C
D
Drive
Thckns.
Bumper
Height
Bumper
Length
Side Wall
Thckns.
5.0
5.0
9.75
8.00
6.00
6.75
1.5
1.5
Dimensions given here are nominal. Exact specification print available on request.
•
Overall
Height
E
F
Outside
Diam.
Snap-fit
Diam.
.250
.158
.255
.379
.375
.188
.323
.563
.250
.158
.255
.379
Dimensions (mm)
B
C
D
E
For C-1002 material, indicate “-1” after part number (e.g. G-401-1)
For C-1105 material, indicate “-2” after the part number (e.g. G-401-2)
For C-1100 material, indicate “-3” after the part number (e.g. G-401-3)
For C-8002 material, indicate “-8” after the part number (e.g. G-401-8)
For VersaDamp material, indicate “-formulation number” after the part number (e.g. G-401-2325)
Aearo Technologies
Inside
Diam.
.344
.457
.365
F
G
H
Outside
Diam.
Edge
radius.
Lg Flg.
Height
Sm Flg.
Height
9.8
1.27
1.75
1.75
E
F
Bottom
Top Wall
Wall Thckns. Thckns.
1.5
1.5
3.25
1.50
C-1002
Grommet Color
Peak Performance Temp.
Range at 1000 Hz
C-1105
C-1100
C-8002
VersaDamp
Blue
Turquoise Yellow
Sky Blue
Black
55F-105F 80F-130F 95F-145F 62F-105F -40F-122F
(13C-41C) (27C-54C) (35C-63C) (17C-41C) (-40C-50C)
*Refer to page 19 for additional temperature data.
7911 Zionsville Road
Indianapolis, IN 46268
Phone (317) 692-1111
Fax (317) 692-3111
650 Dawson Drive
Newark, DE 19713
Phone (302) 738-6800
Fax (302) 738-6811
a 3M company
9
PERFORMANCE CALCULATION GUIDE
HOW TO CALCULATE MOUNT STIFFNESS AND NATURAL FREQUENCY FOR ISODAMP AND VERSADAMP ISOLATORS
TEMPERATURE/FORMULATION CORRECTION CHART
Temperature
F (C)
45F (7C)
50F (10C)
55F (13C)
60F (16C)
65F (18C)
70F (21C)
75F (24C)
80F (27C)
85F (29C)
90F (32C)
95F (35C)
100F (38C)
105F (41C)
110F (43C)
115F (46C)
120F (49C)
125F (52C)
130F (54C)
135F (57C)
140F (60C)
145F (63C)
150F (66C)
155F (68C)
160F (71C)
C-1002
Correction
Factor
8.58
5.86
2.80
1.94
1.39
1.00
.075
0.56
0.44
0.35
0.29
0.25
0.22
0.20
0.18
0.17
0.16
0.16
0.15
0.15
0.15
0.14
0.14
0.14
C-1105
Correction
Factor
—
—
8.26
5.90
4.28
3.11
2.28
1.70
1.30
1.00
0.78
0.63
0.51
0.42
0.34
0.29
0.28
0.27
0.24
0.22
0.20
0.19
0.18
0.17
C-1100
Correction
Factor
—
—
—
—
—
8.85
6.25
4.45
3.24
2.36
1.74
1.30
1.00
0.77
0.61
0.49
0.43
0.41
0.34
0.30
0.26
0.23
0.22
0.20
C-8002
Correction
Factor
31.61
22.22
15.33
10.39
7.95
5.28
3.51
2.38
1.87
1.34
1.01
0.80
0.67
0.61
0.55
0.50
0.48
0.47
0.45
0.44
0.44
0.43
0.43
0.43
V-2325
Correction
Factor
0.53
0.49
0.46
0.43
0.41
0.39
0.37
0.35
0.34
0.33
0.32
0.32
0.31
0.31
0.30
0.30
0.30
0.30
0.29
0.29
0.29
0.29
0.29
0.29
V-2590
Correction
Factor
1.85
1.56
1.24
1.16
1.07
0.96
0.87
0.80
0.77
0.72
0.69
0.66
0.64
0.63
0.62
0.61
0.60
0.59
0.59
0.58
0.58
0.57
0.57
0.57
V-2599
Correction
Factor
2.18
1.85
1.9
1.39
1.27
1.14
1.03
0.95
0.90
0.84
0.80
0.77
0.74
0.73
0.71
0.70
0.69
0.68
0.67
0.66
0.66
0.66
0.66
0.65
V-2750
Correction
Factor
1.30
1.22
1.15
1.10
1.07
1.02
0.97
0.91
0.87
0.81
0.76
0.71
0.67
0.65
0.63
0.61
0.60
0.60
0.59
0.58
0.58
0.58
0.58
0.58
Non-shaded area indicates peak damping performance temperature range.
Predicting E-A-R isolator performance is simple. Just follow the
performance graphs represents the dynamic stiffness for a C-1002
instructions below and refer to the grommet data tables and
grommet at 70F (21C). The Temperature/ Formulation Correction
performance graphs beginning on Page 4.
Chart above makes it easy to determine the dynamic stiffness of any
ISODAMP or VersaDamp grommet for any operating temperature.
DETERMINING DYNAMIC STIFFNESS
Select a candidate ISODAMP or VersaDamp grommet based on your
application parameters—load per isolator, axial (horizontal plate) or
radial (vertical plate) orientation, and plate dimensions. Follow these
steps to determine a grommet’s dynamic stiffness by using the data table
and performance graph for the grommet style you have chosen.
• From the data table—Locate the load factor for the chosen grommet
and orientation (axial or radial). Now, divide the grommet load
(lb/grommet) by the load factor. The result is the load ratio.
Simply multiply the correction factor from this chart by the stiffness
just calculated to get the dynamic stiffness value (lb/in) of the grommet
in the material of choice for your operating temperature range.
N AT U R A L F R E Q U E N C Y C A L C U L AT I O N
Calculations from the grommet data tables and grommet performance
graphs are intended to determine dynamic stiffness values for E-A-R
grommets. This stiffness data is basic to predicting overall system
response and system natural frequency.
• To the performance graph—Locate the load ratio value on the
curve (x-axis), and read the resulting stiffness ratio from the y-axis.
• Back to the data table—Multiply this stiffness ratio value by the
The natural frequency of a particular E-A-R grommet can now be
calculated using the following formula:
stiffness factor. And this is the per grommet stiffness (lb/in).
CORRECTION FOR ELASTOMER FORMULAT I O N A N D O P E R AT I N G T E M P E R AT U R E
Toll-free hotline
(877) EAR-IDEA
(327-4332)
www.earshockandvibe.com www.earsc.com
E-mail: solutions@earsc.com
10
•
K = Dynamic stiffness (lb/in)
W = Load per grommet (lb)
The stiffness calculated from the grommet data tables and
Aearo Technologies
Fn = 3.13 √ K ÷ W
WHERE: Fn = Natural frequency of the grommet (Hz)
7911 Zionsville Road
Indianapolis, IN 46268
Phone (317) 692-1111
Fax (317) 692-3111
650 Dawson Drive
Newark, DE 19713
Phone (302) 738-6800
Fax (302) 738-6811
a 3M company
PERFORMANCE CALCULATION GUIDE
Vibration Isolation
HOW TO CALCULATE VIBRATION ISOLATION PERFORMANCE
Figure 2
Figure 1
EXAMPLE CALCULATION: COMPUTER HARD DRIVE
K = Dynamic stiffness (lb/in)
W = Load per grommet (lb)
Problem Statement
• Our example is a 1.5 lb hard drive isolated with four G-411-2 (ISODAMP C-1105)
grommets at 100F. Lateral hard drive vibration produces axial grommet deflection (y direction, see Figure 2). We therefore will utilize the axial mount data for
the stiffness calculation. Four grommets will be used to support the hard drive.
Two grommets are shown in Figure 1 and two are located on the opposite side.
Natural Frequency (Hz)
(resonance)
√
Fn = 3.13
K÷W
Cross-Over Frequency
(where isolation begins)
√
Fx = 4.42
K÷W =
√2
Stiffness and Natural Frequency Calculation
Fn
Peak Transmissibility
(maximum amplification)
0.375 ÷ 1.8 = 0.208
• Use the performance graph to determine the stiffness ratio: load ratio of
0.208 corresponds to stiffness ratio of 3.0
Isolation System Transmissibility
• From the data table: stiffness factor = 1911 lb/in
• Effective stiffness is stiffness factor x stiffness ratio: 1911 lb/in x 3 = 5733 lb/in
3
Transmissibility
• From the data table on Page 4: load factor = 1.8
• Divide load per grommet by load factor to get load ratio:
Tmax = √ 1 + 2
1.6
• Load per grommet: 1.5 lb ÷ 4 = 0.375 lb/grommet
B
High Damping (E-A-R C-1105)
• Determine the temperature correction factor for C-1105 material @ 100F.
A
1
C
.3
Temperature correction factor=0.63.
Isolation Region
.2
• Actual grommet dynamic stiffness: 5733 lb/in x 0.63 = 3612 lb/in
D
.1
Isolation Performance Calculation
6
2
4
8
√2
Frequency Ratio (Fd/Fn)
1
• Cross-Over Frequency =
Figure 3
11
70 60 50 40 30
√
2 x 307 = 434 Hz
• Fd = Resonant Frequencies to avoid in computer housings: 1000 to 2000 Hz.
• Frequency Ratio = Fd/Fn = 1000 Hz ÷ 307 Hz & 2000 Hz ÷ 307 Hz = 3.25 & 6.5
C-1105
DEGREES CELSIUS
10
√ (3612 ÷ 0.375) = 307 Hz
• Natural Frequency Fn = 3.13
.15
20
10
0
-10
• Per the graph in Figure 3 using frequency ratios, there will be 0.3 to 0.15
10000
Transmissibility (or 70 percent to 85 percent isolation) in that range
10
• To estimate peak transmissibility as shown in Figure 3, use loss factor from
1000
10
the material nomogram (Figure 4) and equation at left. (m=0.8, Tmax=1.6)
9
100
10
(1.0)
FREQUENCY (Hz)
DYNAMIC MODULUS (DYNES/CM2)
(LOSS FACTOR)
MODULUS
Note: For instructions on how to read a material nomogram, see Page 18.
LOSS FACTOR
8
10
7
1
10
(0.1)
10
Figure 4
Toll-free hotline
(877) EAR-IDEA
(327-4332)
www.earshockandvibe.com www.earsc.com
E-mail: solutions@earsc.com
Aearo Technologies
•
7911 Zionsville Road
Indianapolis, IN 46268
Phone (317) 692-1111
Fax (317) 692-3111
650 Dawson Drive
Newark, DE 19713
Phone (302) 738-6800
Fax (302) 738-6811
a 3M company
11
PERFORMANCE CALCULATION GUIDE
HOW TO CALCULATE SHOCK RESPONSE PERFORMANCE
Acceleration Response
= 0.0
1.8
0.10
100
0.20
0.40
0.60
1.6
Transmissibility
120
1.4
0.0
1.00
1.2
Acceleration (G)
Protection
Shock Transmissibility
0.10
0.20
1.0
2.00
0.8
Response
60
40
20
0
0.6
-20
0.4
-40
0
0.2
0
Input
80
0
2
4
6
8
10
12
14
16
18
20
0.002
0.004
0.006
0.01
Time (ms)
22
Figure 2
Natural Frequency x Effective Duration
Figure 1
COMPUTER HARD DRIVE SHOCK PROTECTION
Problem Statement
K = Dynamic stiffness (lb/in)
W = Load per grommet (lb)
• Our example is a 1.5 lb hard drive isolated with four G-411-2 grommets at
100F. The shock input: Half Sine 100G @ 2ms. The shock input creates radial
loading of grommets (z direction in Figure 2, Page 11). Therefore, we will
utilize radial mount data for our stiffness calculation. Four grommets are
used to support the hard drive (see Figure 1, Page 11).
Shock
Natural Frequency (rad/sec)
(resonance)
n = 19.65
√
K÷W
Stiffness and Natural Frequency Calculation
Shock Input: Half Sine
(100G, 2ms)
• Load per grommet: 1.5 lb ÷ 4 = 0.375 lb/grommet
• From the data table on Page 4: load factor = 0.9
• Divide load per grommet by load factor to get load ratio: 0.375 ÷ 0.9 = 0.417
• Use the performance graph to get the stiffness ratio: load ratio of 0.417
corresponds to stiffness ratio of 1.5
• From the data table: stiffness factor = 1153 lb/in
• Effective stiffness will be stiffness factor x stiffness ratio = 1.5 x 1153= 1730 lb/in
Peak Deflection Response (100G, 2ms half sine pulses)
1
• Determine the temperature correction factor for C-1105 material @ 100F.
Temperature correction factor= 0.63.
Displacement (in)
m = 1.0
• Actual grommet dynamic stiffness: 1730 lb/in x 0.63 = 1090 lb/in
m = 0.1
• Natural Frequency n = 1059 rad/sec (167 Hz)
0.1
Shock Protection Performance Calculation
• Effective time duration for half sine shock is 0.637 x actual duration:
0.637 x 0.002 sec = 0.00127 sec
• Take natural frequency x effective duration = 1059 rad/sec x 0.00127 sec =
1.35 and find response in Figure 1 using loss factor = 1.0 curve.
0.01
0
500
1000
Natural Frequency ( n )
Figure 3
1500
• Transmissibility is just slightly less than one. Calculated time response
(via computer algorithm) in Figure 2 confirms this. Often, this is quite
acceptable where the designer wants to ensure that the system does
not amplify shock.
• Peak deflection for this system is 0.022 inch as determined from graph
in Figure 3 using the C-1105 material. A curve is shown for poorly damped
material such as natural rubber (m=0.1). The peak displacement would
then be 0.039 inch which is 77 percent higher than the ISODAMP C-1105
material. This graph is valid for 100G, 2ms half sine pulses only.
• Additional theory on shock protection calculations can be found in most
shock and vibration handbooks.
Toll-free hotline
(877) EAR-IDEA
(327-4332)
www.earshockandvibe.com www.earsc.com
E-mail: solutions@earsc.com
Aearo Technologies
12
•
7911 Zionsville Road
Indianapolis, IN 46268
Phone (317) 692-1111
Fax (317) 692-3111
650 Dawson Drive
Newark, DE 19713
Phone (302) 738-6800
Fax (302) 738-6811
a 3M company
ISOLOSS GROMMETS / MOUNTS
I N S TA L L AT I O N H I N T S
SEE PAGE 17
Symmetric,
Internally Ribbed
G
F
B
E
H
C
A
D
S Y M M E T R I C , I N T E R N A L LY R I B B E D G R O M M E T S
Part No.
Dynamic Stiffness (lb/in)
G-411-H
G-411-SL20100
G-411-SL25200
Load (lb)
Dimensions (inches)
A
B
C
Axial
Radial
Recommended
Maximum
Plate
Thckns.
Hole
Diam.
Inside
Diam.
D
1470
226
318
887
110
154
6.0
1.0
1.0
.063
.059
.059
E
Overall Outside
Height
Diam.
.375 .188
.375 .188
.375 .188
.313
.308
.308
F
G
H
Edge
Radius
Rib
Height
Rib
Width
.125
.123
.123
.063
.059
.059
.063
.063
.063
G
H
.555
.555
.555
Shear
D
C
E
SHEAR
BG
F
GROMMETS
Part No.
Dynamic Stiffness (lb/in)
G-601-H
G-601-SL20100
G-601-SL25200
Load (lb)
Dimensions (inches)
A
B
C
Axial
Radial
Recommended
Maximum
Plate
Thckns.
Hole
Diam.
Inside
Diam.
D
294
57
67
557
111
131
2.0
.3
.3
.056
.050
.050
.565
.569
.569
.245
.245
.245
E
F
Overall Outside
Height
Diam.
.375
.380
.380
Flange
Thckns.
.750
.755
.755
Boss Out. Rib
Diam.
Width
.237
.245
.245
.375
.380
.380
n/a
n/a
n/a
Equipment Mounts
B E
C
A
D
EQUIPMENT MOUNTS
Part No.
ML-4250-H
ML-4250-SL20100
ML-4250-SL25200
Load (lb)
Dimensions (inches)
A
B
C
D
E
F
G
H
Recommended
Maximum
Shank
Height
Shank
Diam.
Inside
Diam.
Overall
Height
Flange
Diam.
Flange
Thckns.
Boss Out.
Diam.
Rib
Width
70.0
10.0
10.0
.125
.126
.126
.495
.500
.500
.309
.313
.313
.629
.625
.625
1.169
1.165
1.165
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
“H” after part number indicates ISOLOSS HD material; “V” after part number indicates ISOLOSS VL material.
Dimensions given here are nominal. Exact specification print available on request.
Toll-free hotline
(877) EAR-IDEA
(327-4332)
www.earshockandvibe.com www.earsc.com
E-mail: solutions@earsc.com
Aearo Technologies
•
7911 Zionsville Road
Indianapolis, IN 46268
Phone (317) 692-1111
Fax (317) 692-3111
650 Dawson Drive
Newark, DE 19713
Phone (302) 738-6800
Fax (302) 738-6811
a 3M company
13
ISOLOSS MOUNTS
MALE-MALE / MALE-BLANK SANDWICH MOUNTS
Part No.
Male-Male Sandwich Mounts
P
P
L
MM-100-UC04-H
MM-100-UC04-SL20100
MM-100-UC04-SL25200
MM-200-UC06-H
MM-200-UC06-SL20100
MM-200-UC06-SL25200
MM-200-UC08-H
MM-200-UC08-SL20100
MM-200-UC08-SL25200
MM-300-UC25-H
MM-400-UC31-H
MB-100-UC04-H
MB-100-UC04-SL20100
MB-100-UC04-SL25200
MB-200-UC06-H
MB-200-UC06-SL20100
MB-200-UC06-SL25200
MB-200-UC08-H
MB-200-UC08-SL20100
MB-200-UC08-SL25200
MB-300-UC25-H
MB-400-UC31-H
D
G
G
Male-Blank Sandwich Mounts
L
P
D
G
Dynamic Stiffness
(lb/in)
Load (lbs)
Dimensions
Threads
D
L
Compression
Shear
Max.
Compressive
Max.
Shear
Diam.
(in)
Length
(in)
262
126
185
285
133
133
285
108
152
471
1108
262
96
132
285
116
133
285
101
139
471
1108
59
12
15
74
12
15
74
12
15
120
270
4.0
0.5
0.5
8.0
1.0
1.0
8.0
1.0
1.0
20.0
50.0
4.0
0.5
0.5
8.0
1.0
1.0
8.0
1.0
1.0
20.0
50.0
1.5
0.2
0.2
3.0
0.4
0.4
3.0
0.4
0.4
5.0
13.0
.275
.280
.280
.400
.405
.405
.400
.405
.405
.615
1.00
.275
.280
.280
.400
.405
.405
.400
.405
.405
.615
1.00
.320 #4-40 .200
.320 #4-40 .200
.320 #4-40 .200
.500 #6-32 .375
.500 #6-32 .375
.500 #6-32 .375
.500 #8-32 .375
.500 #8-32 .375
.500 #8-32 .375
.625 1/4-20 .500
.750 5/16-18 .625
.320 #4-40 .200
.320 #4-40 .200
.320 #4-40 .200
.500 #6-32 .375
.500 #6-32 .375
.500 #6-32 .375
.500 #8-32 .375
.500 #8-32 .375
.500 #8-32 .375
.625 1/4-20 .500
.750 5/16-18 .625
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
Type
P
G
TD
Overall
Height
Grip
(in)
Depth
(in)
.060
.060
.060
.060
.060
.060
.060
.060
.060
.100
.100
.060
.060
.060
.060
.060
.060
.060
.060
.060
.100
.100
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
I N S TA L L AT I O N H I N T S
SEE PAGE 17
MALE-FEMALE / FEMALE-BLANK SANDWICH MOUNTS
Part No.
Dynamic Stiffness
(lb/in)
Load (lbs)
Dimensions
Male-Female Sandwich Mounts
P
L
MF-100-UC04-H
MF-100-UC04-SL20100
MF-100-UC04-SL25200
MF-200-UC06-H
MF-200-UC06-SL20100
MF-200-UC06-SL25200
MF-200-UC08-H
MF-200-UC08-SL20100
MF-200-UC08-SL25200
MF-300-UC25-H
MF-400-UC31-H
FB-100-UC04-H
FB-100-UC04-SL20100
FB-100-UC04-SL25200
FB-200-UC06-H
FB-200-UC06-SL20100
FB-200-UC06-SL25200
FB-200-UC08-H
FB-200-UC08-SL20100
FB-200-UC08-SL25200
FB-300-UC25-H
FB-400-UC31-H
D
G
TD
Female-Blank Sandwich Mounts
L
D
TD
Threads
D
L
P
G
TD
Compression
Shear
Max.
Compressive
Max.
Shear
Diam.
(in)
Length
(in)
Type
Overall
Height
Grip
(in)
Depth
(in)
765
205
154
1049
242
428
1049
242
270
2350
6727
765
159
169
1049
228
123
1049
186
198
2530
6727
148
20
22
208
19
22
208
18
22
385
896
2.0
0.3
0.3
4.0
0.6
0.6
4.0
0.6
0.6
12.0
45.0
2.0
0.3
0.3
4.0
0.6
0.6
4.0
0.6
0.6
12.0
45.0
0.8
0.1
0.1
2.0
0.3
0.3
2.0
0.3
0.3
3.5
10.0
.275
.280
.280
.400
.405
.405
.400
.405
.405
.615
1.00
.275
.280
.280
.400
.405
.405
.400
.405
.405
.615
1.00
.320
.320
.320
.500
.500
.500
.500
.500
.500
.625
.750
.320
.320
.320
.500
.500
.500
.500
.500
.500
.625
.750
#4-40
#4-40
#4-40
#6-32
#6-32
#6-32
#8-32
#8-32
#8-32
1/4-20
5/16-18
#4-40
#4-40
#4-40
#6-32
#6-32
#6-32
#8-32
#8-32
#8-32
1/4-20
5/16-18
.200
.200
.200
.375
.375
.375
.375
.375
.375
.500
.625
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
.060
.060
.060
.060
.060
.060
.060
.060
.060
.100
.100
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
.110
.110
.110
.160
.160
.160
.160
.160
.160
.260
.290
.110
.110
.110
.160
.160
.160
.160
.160
.160
.260
.290
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
n/a
“H” after part number indicates ISOLOSS HD material.
Dimensions given here are nominal. Exact specification print available on request.
Toll-free hotline
(877) EAR-IDEA
(327-4332)
www.earshockandvibe.com www.earsc.com
E-mail: solutions@earsc.com
Aearo Technologies
14
•
7911 Zionsville Road
Indianapolis, IN 46268
Phone (317) 692-1111
Fax (317) 692-3111
650 Dawson Drive
Newark, DE 19713
Phone (302) 738-6800
Fax (302) 738-6811
a 3M company
ISOLOSS PERFORMANCE CALCULATION GUIDE
WORKSHEET
TO
DETERMINE
ISOLATOR
STIFFNESS
AND
NATURAL
FREQUENCY
The dynamic stiffness values presented in the tables on Pages 13-14
CALCULATION WORKSHEET
are based on a mount temperature of 68F (20C). To determine
1. Choice of isolator
2. Weight/isolator
3. Orientation of the installed isolator
4. Dynamic stiffness of the isolator at 68F (20C)
5. Operating temperature of the application
6. Temperature correction factor
7. Multiply the dynamic stiffness value
(lb/in)
by the temperature correction factor
8. Calculate natural frequency using equation provided
below left.
whether a particular ISOLOSS HD or VL isolator has the required
dynamic stiffness for a particular application, simply use the
Stiffness-Temperature Correction Graph below and follow
these steps.
CALCULATING STIFFNESS WITH TEMPERATURE
1. Select an ISOLOSS HD or VL isolator for your application.
2. Consult the tables on Pages 13-14 to find the dynamic stiffness
value for the particular isolator you have chosen. Use the value
given for either axial (horizontal plate) or radial (vertical plate),
depending on how the grommet will be used. For a sandwich
mount, choose the value for compression or shear mounting.
3. Using the operating temperature of the application, find the
temperature correction factor for the material you are
considering from the graph below.
4. Multiply the dynamic stiffness value by the temperature
correction factor to obtain the dynamic stiffness at the
specified temperature of the application.
NATURAL FREQUENCY CALCULATION
EXAMPLE CALCULATION
1. Choice of isolator
G-411-H
2. Weight per isolator
= 3 lbs.
3. Orientation of the installed isolator
Axial mount
4. Dynamic stiffness of the isolator at 68F (20C)
= 1470
5. Operating temperature of the application
= 86F (30C)
6. Temperature correction factor
= 0.5
7. Multiply by the dynamic stiffness value
= 735 lb/in
by the temperature correction factor
8. Calculate natural frequency: Fn = 3.13 √ 735/3 = 49Hz
9. Refer to Pages 11 and 12 for additional isolator performance
calculations.
The natural frequency of a particular E-A-R grommet or sandwich
mount can now be calculated by using the dynamic stiffness
calculated above.
STIFFNESS-TEMPERATURE
CORRECTION GRAPH
Fn = 3.13 √ K ÷ W
WHERE: Fn = Natural frequency of the grommet (Hz)
100.0
K = Dynamic stiffness (lb/in)
CORRECTION FACTOR
W = Load per grommet (lb)
Refer to Pages 11 and 12 for remainder of isolator
performance calculations.
10.0
ISOLOSS HD
ISOLOSS VL
1.0
0.1
0
5
10
15
20
25
30
35
40
TEMPERATURE (C)
Toll-free hotline
(877) EAR-IDEA
(327-4332)
www.earshockandvibe.com www.earsc.com
E-mail: solutions@earsc.com
Aearo Technologies
•
7911 Zionsville Road
Indianapolis, IN 46268
Phone (317) 692-1111
Fax (317) 692-3111
650 Dawson Drive
Newark, DE 19713
Phone (302) 738-6800
Fax (302) 738-6811
a 3M company
15
I S O L AT O R I N S TA L L AT I O N H I N T S
GROMMETS
To meet a wide range of performance and assembly needs, E-A-R offers both
one-piece and two-piece styles of grommets.
GROMMET INSERTION
Figure 1
One-piece grommets—ribbed and non-ribbed
Here are typical methods for installing one-piece E-A-R grommets in a frame
or panel.
• For use in automated assembly, the preferred method of grommet
installation is the straight-side or keyhole slot. See Figure 1. This method
accommodates robotic assembly and is the easiest for manual assembly
as well. Using this method, the grommet and the hardware recommended
to optimize performance can be installed in a single step, or the hardware
can be added later. See Figure 2.
D
= 80% of
D
TYPICAL ISODAMP GROMMET INSTALLATIONS
Figure 2
• For manual assembly without keyhole slots, E-A-R grommets can
be heated to make them more pliable. They can then more easily
be pushed into position in the frame or plate.
TYPICAL ISODAMP BUSHING AND RING INSTALLATIONS
Figure 3
Ring & bushing
Double bushing
Two-piece grommets—bushings and rings
For non-standard-thickness panels or frames, use of two-piece grommets
(bushings and rings, or two bushings, as shown in Figure 3) can provide
a major installation advantage. Two-piece grommets eliminate the need
for preheating. The two pieces are installed from opposite sides to
accommodate many panel thicknesses.
Double bushing
RECOMMENDED HARDWARE TO OPTIMIZE PERFORMANCE
Figure 4
Shoulder
bolt with
washer
Metal
ferrule
Plastic
ferrule
Lock nut
FOR PRELOAD CALCULATION
Figure 5
Hardware
Common hardware, typically used with E-A-R grommets to mechanically limit
preload, is shown in Figure 4. The hardware may include a shoulder bolt with
washer, plastic or metal spacer, sleeve, or locking nuts with bolt and washers.
Sleeve
Optimum performance of vibration and shock is generally achieved with
5 to 10 percent preloading of E-A-R grommets, especially for ribbed styles.
The ideal hardware height to obtain maximum recommended preload can
be calculated from the formula Hardware Height = 0.91 (H) + 0.09(G),
where H is the overall grommet height and G is the thickness of the mounting plate. See Figure 5.
H
G
FAN MOUNT INSTALLATION
Figure 6
Isolation Disk
FAN MOUNTS
Here are typical methods for installing ISODAMP fan mounts.
• Pull one opening of the “isolation disk” into the hole in the sheet metal. Pull
the fan mount into sheet metal hole in a rotational motion. See Figure 6.
Repeat until all the fan mounts are in all the sheet metal holes.
Figure 7
• Align all the fan holes to the fan mounts. Push the fan into the fan mounts
while pulling the tip of each individual fan mount through the holes in the
fan. See Figure 7.
Toll-free hotline
(877) EAR-IDEA
(327-4332)
www.earshockandvibe.com www.earsc.com
E-mail: solutions@earsc.com
Aearo Technologies
16
•
7911 Zionsville Road
Indianapolis, IN 46268
Phone (317) 692-1111
Fax (317) 692-3111
650 Dawson Drive
Newark, DE 19713
Phone (302) 738-6800
Fax (302) 738-6811
a 3M company
I S O L AT O R I N S TA L L AT I O N H I N T S
Alternate fan mount installations
Figures 8 and 9 illustrate two alternate installation methods.
• Basic Keyhole: Slide fan mounts into the keyholes on the sheet metal. Align
all the fan holes to the fan mounts. Push the fan into the mounts, pulling
each mount through the corresponding hole in the fan. See Figure 8.
• Rotational Keyhole: First pull all the fan mounts through the holes on the
fan. Position the fan and mount assembly over the sheet metal. Push all the
fan mount bases into the large portion of the keyhole. Rotate the assembly
until it locks in place. See Figure 9.
Custom design options
E-A-R fan mounts can be designed with a throw-away tip that breaks away
with a firm tug after the fan has been installed. See Figure 10. The force
ALTERNATE INSTALLATION
Figure 8: Basic Keyhole
required to pull the mount through the fan holes should be less than 1.5 lbf.
Keyhole Detail
Break-off force for the tip is about 3 lbf. Figure 11 shows another option—a
D
“double Xmas tree design”— which can accommodate two different flange
thicknesses.
For even greater flexibility in manufacturing assembly, fan mounts can be
designed for two-way pull-through installation. See Figure 12. This allows the
choice of pulling the mount through either the fan holes or the sheet metal
holes first.
= 90% of
D
Sheet Metal
Figure 9: Rotational Keyhole
Keyhole Details
= 90% of
D
ISOLOSS SANDWICH MOUNTS
As shown in Figure 13, ISOLOSS sandwich mounts can be used to support
D
loads in either compression or shear, or, as in most cases, some combination
of the two. Here are some installation tips to consider when installing a mount.
Sheet Metal
Loading conditions vs. stiffness
ISOLOSS HD and VL elastomers are stiffer under compressive load than
CUSTOM FAN MOUNT DESIGN OPTIONS
Figure 10: Break-off Tip
under shear load. Consequently, when the elastomers are used in shear,
Break-off point
they cannot be load-rated as highly as when used in compression.
The dynamic shear stiffness generally is between 20 and 30 percent of the
compressive stiffness. Thus, a mount’s natural frequency under compres-
Figure 11: Double X-mas Tree
sion loading is twice what it is under shear loading. Therefore, a mount
can be used in static compression up to its material strength limits
while providing very good isolation of lateral, or shear, vibration.
Figure 12: 2-Way Pull Through
Deflection in overload conditions
ISOLOSS sandwich mounts are self-snubbing under compressive overload. As
a mount is loaded to its design limit, the effective stiffness begins to increase,
thus offsetting excessive deflection under overload conditions. By contrast,
overload in the shear direction will increase shear stiffness only slightly. Consequently, shear overload is not self-snubbing. The same is true for tensile overload.
This behavior makes a strong case for engineering sandwich mounts to
SANDWICH MOUNT
Figure 13
W
be used primarily in compression, especially in cases where occasional
overload or excessive temperatures may occur. As a rule, sandwich
W
mounts should never be used primarily in tension. If they must be used
in tension or shear, however, a fail-safe design, e.g., use of a retention
strap, is especially critical.
Shear
Lock Washer
Compression
Toll-free hotline
(877) EAR-IDEA
(327-4332)
www.earshockandvibe.com www.earsc.com
E-mail: solutions@earsc.com
Aearo Technologies
•
7911 Zionsville Road
Indianapolis, IN 46268
Phone (317) 692-1111
Fax (317) 692-3111
650 Dawson Drive
Newark, DE 19713
Phone (302) 738-6800
Fax (302) 738-6811
a 3M company
17
MATERIAL NOMOGRAMS & PROPERTIES
C-1000 Series
C-1105
11
10
30
C-1100
DEGREES CELSIUS
20
10
0
-10
-20
11
10
10000
DEGREES CELSIUS
70 60 50 40 30
20
10
-10
0
70
11
10000
10
60
50
40
30
20
100
LOSS FACTOR
8
10
(0.1)
10
10
7
1000
9
100
10
10
(1.0)
LOSS FACTOR
10
1
8
10
7
1
10
(0.1)
DYNAMIC MODULUS (DYNES/CM2)
(LOSS FACTOR)
9
10
(1.0)
0
10000
MODULUS
MODULUS
10
FREQUENCY (Hz)
1000
10
DYNAMIC YOUNG'S MODULUS (DYNES/CM2)
(LOSS FACTOR)
10
FREQUENCY (Hz)
DYNAMIC MODULUS (DYNES/CM2)
(LOSS FACTOR)
MODULUS
10
10
1000
9
100
10
10
(1.0)
LOSS FACTOR
8
10
10
(0.1)
10
FREQUENCY (Hz)
C-1002
DEGREES CELSIUS
70 60 50 40
7
1
VERSADAMP
VERSADAMP V-2590
40
20
0
-20
-40
1000
109
(1.0)
100
LOSS FACTOR
MODULUS
10 8
(0.1)
10
10 7
1
DYNAMIC MODULUS (DYNES/CM2)
(LOSS FACTOR)
10000
1010
60
40
20
DEGREES CELSIUS
0
-20
120 100 80
-40
1011
FREQUENCY (Hz)
DYNAMIC MODULUS (DYNES/CM2)
(LOSS FACTOR)
1011
120 100 80
10000
1000
1010
MODULUS
100
109
(1.0)
LOSS FACTOR
10 8
(0.1)
10
10 7
1
ISOLOSS HD
VERSADAMP V-2750
DEGREES CELCIUS
DEGREES CELSIUS
40
20
0
-20
11
MODULUS
100
109
(1.0)
10 8
(0.1)
LOSS FACTOR
10
DYNAMIC YOUNG'S MODULES (DYNES/CM2)
(LOSS FACTOR)
1000
1010
60 50 40 30
20
10
0
-10
10
10000
FREQUENCY (Hz)
DYNAMIC MODULUS (DYNES/CM2)
(LOSS FACTOR)
1011
-40
-20
1
10000
1)
10
10
1000
9
10
(1.0)
100
2)
3)
LOSS FACTOR
8
10
(0.1)
10
7
1
10
5)
Note: Downloadable versions of these nomograms are available on our Websites.
Toll-free hotline
(877) EAR-IDEA
(327-4332)
www.earshockandvibe.com www.earsc.com
E-mail: solutions@earsc.com
Aearo Technologies
18
•
0
-20
-40
10000
1000
1010
MODULUS
100
109
(1.0)
10 8
(0.1)
LOSS FACTOR
10
1
Reduced Frequency Nomograms
The reduced frequency format is the standard
method for displaying damping material performance data. To determine dynamic Young’s modulus and material loss factor at a given temperature
and frequency, use the following steps.
4)
10 7
20
MODULUS
FREQUENCY (Hz)
60
40
10 7
ISOLOSS HD
120 100 80
60
1011
DYNAMIC MODULUS (DYNES/CM2)
(LOSS FACTOR)
60
FREQUENCY (Hz)
120 100 80
VERSADAMP V-2599
DEGREES CELSIUS
DEGREES CELSIUS
FREQUENCY (Hz)
VERSADAMP V-2325
Select the frequency of interest on the righthand vertical axis.
Follow the selected frequency line horizontally
to the left until the selected diagonal temperature isotherm is intersected.
Draw a vertical line up and down through the
frequency/isotherm intersection, intersecting
the dynamic Young’s modulus and material
loss factor curves.
Draw horizontal lines from these points to
intersect the left-hand vertical axis.
The dynamic Young’s modulus value is read
using the Dynamic Modulus scale and the
loss factor from the Loss Factor scale.
7911 Zionsville Road
Indianapolis, IN 46268
Phone (317) 692-1111
Fax (317) 692-3111
650 Dawson Drive
Newark, DE 19713
Phone (302) 738-6800
Fax (302) 738-6811
a 3M company
TYPICAL PROPERTIES
ISODAMP
ISOLOSS
VersaDamp
Property
C-1002
C-1105
C-1100
C-8002
V-2325
V-2590
V-2599
ISOLOSS HD
SL-20100
SL-25200
Description
Vinyl Solid
Vinyl Solid
Vinyl Solid
TPE Solid
TPR Solid
TPR Solid
TPR Solid
Urethane Solid
Synthetic
Rubber
Synthetic
Rubber
57
50
21
27
Hardness
ASTM D2240
Shore A Durometer 23C (73F)
On Impact
58
5 sec impact
15 sec impact
56
63
70
57
40
Listed V-0
Listed V-0
Listed V-0
Listed V-0
Listed HB
Listed HB
@ 0.072 cm
@ 0.15 cm
@ 0.15 cm
@ 0.28 cm
@ 0.32 cm
@ 0.15 cm
(0.28 in)
(0.06 in)
(0.06 in)
(0.110 in)
(0.125 in)
Meets at
Meets at
Flammability
UL 94
MVSS-302
Meets at
Meets at
Meets at
(0.06 in)
Meets at
Meets at
0.040 cm
0.15 cm
0.32 cm
0.32 cm
0.32cm
0.32 cm
0.32 cm
(0.015 in)
(0.06 in)
(0.125 in)
(0.125 in)
(0.125 in)
(0.125 in)
(0.125 in)
FAR 25.853 (a) Appendix F
Meets at
Part I (a) (1) (ii) (12 sec)
.152 cm
(.060 in)
Canadian Stds. Assoc. (CSA)
Listed 0.6 V-0
Listed 0.6 V-0
0.15 cm
0.15 cm
Listed 0.6 HB
0.32 cm
(0.06 in)
(0.06 in)
(0.06 in)
Compression Load
Deflection kPa (psi)
ASTM D575
at 0.51 cm/min (0.2 in/min)
10%
kPa (psi)
490 (71)
634 (92)
1069 (155)
751 (109)
20%
kPa (psi)
1682 (244)
30%
kPa (psi)
3682 (534)
210 (30)
2206 (320)
3413 (495)
1530 (222)
450 (65)
4785 (694)
7122 (1033)
2440 (354)
817 (118)
551 (80)
469 (68)
565 (82)
124 (18)
179 (26)
1102 (160)
855 (124)
1241 (180)
241 (35)
352 (51)
1719 (249)
1448 (210)
2103 (305)
393 (57)
565 (82)
Compression Set (%)
ASTM D395 Method B
22 hr at 22C (72F)
14
23
24
18
15
15
16
4.5
3
5
22 hr at 70C (158F) *50C (122F)
62
51
55
66*
26
26
32
6.1
8
8
22 hr at 90C (194F)
30
7.9
Tensile Strength kPa (psi)
ASTM D412
10852
12459
14190
7930
2620
4502
4930
8963
3653
4384
(1574)
(1807)
(2058)
(1150)
(380)
(653)
(715)
(1300)
(530)
(636)
15.6
Tear Strength kN/m (lbf/in)
ASTM D624
35
42
53
30
10.2
23.1
21.5
38
12.2
(202)
(241)
(305)
(173)
(58)
(132)
(123)
(218)
(69)
(88)
@1,000 HZ
@1,000 HZ
8C to 51C
8C to 45C
Temperature Range C (F)
Peak Damping
13C to 41C
Performance Temperature Range
27C to 54C
(55F to 105F) (80F to 130F)
35C to 63C
17C to 41C
(95F to 145F)
(62F-105F)
-40C to 50C
-40C to 50C
-40C to 50C
(-40F to 122F) (-40F to 122F) (-40F to 122F)
13C to 41C
(55F to 105F)
(46F to 123F) (46F to 113F)
Recommended Maximum
82C
82C
82C
80C
125C
125C
125C
107C
100C
100C
Intermittent Temperature
(180F)
(180F)
(180F)
(176F)
(257F)
(257F)
(257F)
(225F)
(212F)
(212F)
Maximum Continuous
Service Temperature
RoHS Compliant
70C
70C
70C
70C
100C
100C
100C
90C
70C
70C
(158F)
(158F)
(158F)
(158F)
(212F)
(212F)
(212F)
(194F)
(158F)
(158F)
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Toll-free hotline
(877) EAR-IDEA
(327-4332)
www.earshockandvibe.com www.earsc.com
E-mail: solutions@earsc.com
Aearo Technologies
•
7911 Zionsville Road
Indianapolis, IN 46268
Phone (317) 692-1111
Fax (317) 692-3111
650 Dawson Drive
Newark, DE 19713
Phone (302) 738-6800
Fax (302) 738-6811
a 3M company
19
ELASTOMER COMPARISON GUIDE
E-A-R Highly Damped Materials
VersaDamp
V-2590
ISODAMP
ISODAMP
C-8002
ISOLOSS
HD
Other Common Materials
ISOLOSS
HDF
Other
TPE
Urethane
Thermoset
Butyl
Rubber
Natural
Rubber
Neoprene
Nitrile
Rubber
18
Damping T max (dB)
7
3
3
4
4
15
4
8.6
23
20
Durometer Shore A
57
56,63,70
57
58
61
55
35
55
50
50
55
Resilience %
12
5.3
4
4.5
4.5
49
4.8
15.6
68
238
28.4
Tensile Strength PSI
653
1574, 1807,
2058
1150
1300
1348
674
225
786
1741
584
1103
Percent Elongation
344
459
754
424
424
396
400
335
776
675
669
Tear Strength
Good
Excellent
Good
Excellent
Excellent
Good
Excellent
Good
Good
Poor
Good
Poor
Excellent
Excellent
Poor
Poor
Fair
Abrasion Resistance
Poor
Good
Excellent
Good to Excellent
Excellent
Compression Set Resistance
Good
Fair
Fair
Excellent
Excellent
Good
Excellent
Fair
Good
Fair to Good
Good
Low Temperature
-70C
-20C
-12C
-27C
-27C
-70C
-50C
-50C
-80C
-45C
-85C
125C
82C
80C
107C
107C
125C
82C
135C
121C
135C
125C
Heat Aging 100C
Excellent
Good to
Excellent
Good
Fair to
Good
Fair to
Good
Excellent
Fair to Good
Excellent
Good
Good
Good
Flame resistance
UL 94 HB
UL 94 V-0
UL 94 V-0
UL 94 HB
UL 94 V-2
UL 94 HBF
Poor to Fair
Poor
Poor
Good
Poor to Fair
Injection
Molding
Injection
Molding
Transfer
Molding
Transfer
Molding
Injection Reaction Mold
or Cast
Molding
Compression
Mold
Compression
Mold
Compression
Mold
Compression
Mold
Embrittlement Point
High Temperature
Max Intermittent
Typical Process
Method
Injection
Molding
Bonding
Poor
Fair
Excellent
Good
Good
Poor
Fair to Good
Fair to Excellent
Excellent
Good to Excellent
Excellent
Weather
Excellent
Excellent
Excellent
Excellent
Excellent
Excellent
Excellent
Fair
Excellent
Good
Oxidation
Excellent
Good to
Excellent
Excellent
Excellent
Excellent
Excellent
Excellent
Excellent
Excellent
Good
Good
Fair to Good
Ozone
Excellent
Excellent
Good
Excellent
Excellent
Excellent
Excellent
Excellent
Poor
Excellent
Poor
Water
Good
Excellent
Excellent
Good
Good
Good
Good
Excellent
Excellent
Good
Excellent
Acid
Excellent
Excellent
Good
Good
Good
Excellent
Poor to Fair
Excellent
Fair to Good
Good
Good
Alkali
Excellent
Good
Good
Good
Good
Excellent
Poor to Fair
Excellent
Fair to Good
Good
Fair to Good
Poor
Good
Poor
Excellent
Excellent
Poor
Excellent
Poor
Poor
Good
Excellent
Poor
Fair
Poor
Poor
Poor
Poor
Poor to Fair
Fair to Good
Poor
Poor
Good
Alcohol
Good
Poor
Good
Fair
Fair
Good
Good
Excellent
Good
Fair
Excellent
Degreaser Solvents
Poor
Fair to Poor
Poor
Fair to Poor
Fair to Poor
Poor
Fair to Poor
Poor
Poor
Poor
Poor
Resistance Data
Gasoline, Kerosene, Etc.
(Aliphatic Hydrocarbons)
Benzol, Toluol, Etc.
(Aromatic Hydrocarbons)
(Halogenated Hydrocarbons)
PUT E-A-R ON YOUR DESIGN TEAM
Incorporating preventive measures early in a product’s development
process can help sidestep unwanted noise and vibration, as well as disruptive and destructive shock energy that can affect marketability. It
also can prevent the need to re-engineer, redesign or retool. Retrofitting
is rarely as cost-effective as designed-in controls, and may be much
more costly to implement in the long run.
Assistance from an E-A-R applications engineer may entail a quick
phone call, complete in-house lab diagnosis or even a visit to the customer’s site. Our NOVICON lab can effectively diagnose problems and
validate our proposed solutions, utilizing state-of-the-art diagnostic and
analytical tools. Vibration shakers, drop shock tables, high-speed video
and a hemi-anechoic chamber are just a few of the tools commonly used.
E-A-R engineers and technicians routinely consult with product designers about materials selection, design configurations, potential problems
and other critical noise, vibration and shock issues while the design is still
on the drawing board. We don’t supply just materials. We offer our technical expertise, applications experience and testing capabilities as well.
E-A-R also utilizes the latest 3D solid modeling CAD systems—ProE,
CATIA, SolidWorks and SDRC-Ideas—to examine a customer’s product
during the design stage and to develop custom solutions. Electronic
transfer of large files is available through our Websites.
The data listed in this guide are typical or average values based on tests conducted by independent laboratories or by the manufacturer. They are indicative only of the results obtained in such tests and
should not be considered as guaranteed maximums or minimums. Materials must be tested under actual service to determine their suitability for a particular purpose.
Toll-free hotline
(877) EAR-IDEA
(327-4332)
www.earshockandvibe.com www.earsc.com
E-mail: solutions@earsc.com
Aearo Technologies
20
•
7911 Zionsville Road
Indianapolis, IN 46268
Phone (317) 692-1111
Fax (317) 692-3111
650 Dawson Drive
Newark, DE 19713
Phone (302) 738-6800
Fax (302) 738-6811
a 3M company
©2005 Aearo Company • Printed 1.09 • Cat. 200
工商网监
湘ICP备2023018690号
