Information……………………………….……………….…1
Description and Dimensions ………………………..….. 2
Physical Analysis ………………………………………….. 4
Graph: Statics …...………............................................... 5
Graph: Dynamics (Natural Frequency) ……………...… 7
Insulation Grade Graph ………...…………………..……. 7
Uses…………………………………………………..………9
Index
Supply Version and Installation …………....... 3
Sag test to measure the
resistance of the spring
attached to the framework
The VIB 40.000 insulators are metal spring
isolators formed by the parallel assembly of
four basic insulators from to the VIB 1.000
SERIES (see DT-1000).
They provide a very high vibration insulation
due to its very low damping factor (t= 0,001).
Three main vibroacustics objectives are
covered:
Information
Description and dimensions
- Decreasing vibrations transmission.
- Reducing structural noise induced by mechanical vibrations in buildings and facilities.
- Highly recommended for insulating machinery operating at low working cycles (above
600 rpm).
- Natural Frequency 7 to 3 Hz.
1. Steel spring with high resistance that is compliant
with DIN standards, subsequently treated with shot
peeling to extend its resistance to fatigue under
permanent conditions of stress. Surface finish coated
with EPOXY protection.
1. Steel bushings, fixed by two systems:
1.2 Mechanically, by means of two protuberances
that imprison the last turn of the spring and prevent
the spring from buckling (see the buckling image of
an insulator under test).
2.2 By means of viscoelastic putty that joins both
parts and avoids the direct contact of the metallic
parts and favors the acoustic opacity to the metallic
noise.
2. Closed internal flexible polyethylene filler, to
prevent solid elements from entering and
damaging the spirals under load.
3. Metal base, with rib for increased stiffness. Oval
holes to facilitate its centering and anchoring to the
ground.
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Description and dimensions
131
206
119
172
12
24
165
M16
2
Supply Versions and Installation
Accesory: leveling
bolt M-16
AS FOR THE FINISH, TWO VERSIONS AVAILABLE
STANDART version
Galvanized protection
Versión “E” Epoxy
Protección anticorrosión
Antioxidant EPOXY coating finish
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Accessory for precompressed version Large base insulation accessories
Levelling installation
Assembly with special top base
Direct installation
Assembly with plain top
base for free positioning
3
Physical Analysis
Nota:1 kgf (kilogramo fuerza) = 9,807 N = 0,98 daN = 1kp
• Working temperature range: -90ºC to 200ºC
• Admissible overload: 50% of its maximum load
LATERAL SHIFTING
Should the structure where the isolator is attached expand, isolators may shift laterally the
maximum values shown in the following table:
Compression
[mm]
shear
[mm]
MÁX.
deflection25mm
MÁX.
deflection10-16mm
Vibcon
Modelo
Elastic constant
K
[kgf/mm]
Static compression load/
Minimun and maximun [kgf ](1)Isolator’s
Weight
[kg]
Mínima Máxima Optima
Kz Kx/Kz
Ky/Kz kgf mm kgf mm kgf
VIB 40.400 16 1,6 40
2,5 mm
400
25 mm
80-368 4,5
VIB 40.450 18 1,6 45 450 90-414 4,5
VIB 40.500 20 1,6 50 500 100-460 4,5
VIB 40.550 22 1,6 55 550 110-506 4,5
VIB 40.600 24 1,5 60 600 120-552 4,5
VIB 40.700 28 1,5 70 700 140-644 4,5
VIB 40.800 32 1,5 80 800 160-736 4,5
VIB 41.000 40 1,5 100 1.000 200-920 4,5
VIB 41.200 48 1,5 120 1.200 240-1.104 5,5
VIB 41.400 56 1,5 140 1.400 280-1.288 5,5
VIB 41.600 64 1,5 160 1.600 320-1.472 5,5
VIB 41.800 72 1,5 180 1.800 360-1.656 6
VIB 42.000 80 1,5 200 2.000 400-1.840 6
VIB 42.200 88 1,5 220 2.200 440-2.024 6
VIB 42.400 96 1,5 240 2.400 480-2.208 6
VIB 42.500 109 1,5 250 2.504
23 mm
501-2.304 6
VIB 42.800 122 1,5 280 2.800 560-2.576 6
VIB 43.000 130 1,4 300 3.000 600-2.760 6
VIB 43.200 139 1,4 320 3.200 640-2.944 6
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Kz
KxKy
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Graph: Statics
0,0 kgf
100,0 kgf
200,0 kgf
300,0 kgf
400,0 kgf
500,0 kgf
600,0 kgf
0 mm 5 mm 10 mm 15 mm 20 mm 25 mm
VIB 40.400
VIB 40.450
VIB 40.500
VIB 40.550
VIB 40.600
0,0 kgf
200,0 kgf
400,0 kgf
600,0 kgf
800,0 kgf
1000,0 kgf
1200,0 kgf
1400,0 kgf
0 mm 5 mm 10 mm 15 mm 20 mm 25 mm
VIB 40.700
VIB 40.800
VIB 41.000
VIB 41.200
VIB 41.400
0,0 kgf
400,0 kgf
800,0 kgf
1200,0 kgf
1600,0 kgf
2000,0 kgf
0 mm 5 mm 10 mm 15 mm 20 mm 25 mm
VIB 41.400
VIB 41.600
VIB 41.800
VIB 42.000
VIB 42.200
5
0,0 kgf
250,0 kgf
500,0 kgf
750,0 kgf
1000,0 kgf
1250,0 kgf
1500,0 kgf
1750,0 kgf
2000,0 kgf
2250,0 kgf
2500,0 kgf
2750,0 kgf
3000,0 kgf
3250,0 kgf
0 mm 5 mm 10 mm 15 mm 20 mm 25 mm
VIB 42.400
VIB 42.500
VIB 42.800
VIB 43.000
VIB 43.200
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Graph: Statics
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Graph: Dynamics (Natural Frequency)…
Insulation Grade Graph
This graph is used to select the precise compression deflection for obtaining an
Insulation Grade, expressed in %, depending on the minimum revolutions of the
equipment.
This graph is only valid for Vibcon metal spring insulators and is not applicable for any
other countertype on the market.
2
4
6
8
10
12
14
16
1 3 5 7 9 11 13 15 17 19 21 23 25
[Hz]
[mm]
0
5
10
15
20
25
500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000
Fle
ch
a d
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om
pre
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n [m
m]
Frecuencia excitatriz en rpm
70% 80% 85% 90% 95% 98% 99%
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Insulation Grade Graph
EXAMPLE: Air-water cooling plant with compressors working at 25% (750 rpm).
• The TURBULENCE FREQUENCY is taken as the minimum revolutions, i.e., 750
rpm
• For compliance with the RITE an insulation of ≥ al 90% is required
• A vertical line is drawn on axis x in 750 until it intersects with the curve of 90%
• Then a horizontal line is drawn from the intersection point obtained to the axis, to
OBTAIN THE MINIMUM DEFLECTION (18 mm) the load insulator must comply
with the insulation conditions based on RITE.
• If once under load the insulator is compressed to obtain a deflection of > 18mm, it
will be compliant with RITE.
WHEN CALCULATING INSULATION GRADE, LOAD AND MINIMUM TURBULENCE
FREQUENCY ARE ALWAYS REQUIRED
CALCULATIONS TAKING ONLY INTO ACCOUNT THE LOAD ARE NOT PROPER
CRITERION FOR SELECTING THE INSULATION GRADE
ZONE Description GRADE IN %
NON-CRITICAL
ZONE
Industrial warehouses on industrial estates
Basements.
Areas far from places that are sensitive to
structural noise and vibrations.
85%
CRITICAL ZONE
Roofs of apartment blocks, offices or public
buildings.
Zones that are sensitive to the transmission
of structural noise and vibrations.
90-95 %
VERY CRITICAL
ZONE
Auditoriums, theatres, cinemas, congress
halls, hospitals, etc.
Zones in which very low levels of noise and
vibrations are required.
>95%
Criterio R.Torres s/estudiós Higini Arau
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Uses
• Air conditioners
• Heating pumps
• Water/air chillers
• Generating sets
• Estructures
• Etc.
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