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STACIS® is the world's most advanced active vibration cancellation system. Employing advanced inertial vibration sensors and state-of-the-art piezoelectric actuators, STACIS® 2100 cancels vibration in real time by sensing floor vibration, then expanding and contracting piezoelectric actuators to filter out floor motion. Isolation starts at 0.6 Hz and the active bandwidth is 250 Hz.
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Smaller than traditional wire rope isolators, these unique isolators provide unsurpassed multi-axis shock / vibration isolation with maximum reliability where sway space is a premium. Compact WRI are unaffected by temperature extremes and chemical exposure. Featuring a patented crimping pattern, they are ideal for lightweight applications such as disk drives, sensitive mobile electronics, medical equipment, and small pumps / motors.
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Pumps may rotate or reciprocate. Rotating pumps are usually well balanced. Nevertheless their elastic support makes sense when these pumps are installed on the upper floor levels inside a building, since in this way vibration and structure borne noise can be avoided.
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EGA MARINE
Initially designed to be used for marine applications
that mount is commonly used too for both
static and mobile equipment such as:
Gen-sets
Pumps
Compressors
Marine engines
Industrial engines
They are fitted with a mechanical stop or failsafe (rebound).
That machine mount allows controlling vibrations
in three directions and guarantees different degrees
of stiffness in the three main axes.
The metal cup (Cover) gives a good protection
against oils, greases and corrosion.
Natural frequencies as low as 8 Hz are possible.
There are 2 sizes in the standard range with
various degrees of rubber hardnesses.
NEW: Available in stainless steel too.
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Originally designed for use with marine engines, this compact low
profile mounting is easy to install. It combines 3 way control of
the suspended equipment with relatively large static deflections
where the rubber is loaded in shear and compression.
The design incorporates bump and rebound control features
which limit excessive movements under shock loading. Top metal
cover gives protection against oil contamination and protective
finish resists corrosion attack. Propeller thrust on marine applications
is accommodated. There are four sizes in the standard range
with varying degrees of rubber hardness cater for point loads from
32 kg to 3000 kg. Natural frequencies as low as 8 Hz are possible.
Note: When used in marine engine applications with thrust forces
involved, the maximum load capacity is substantially reduced, see
table below!
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UNISORB® GK™ Low Frequency Foundation Blocks :
The GK™ Low Frequency Foundation Block is specifically used for isolating equipment where low interfering frequencies are encountered. They are typically used under concrete foundations supporting either source or sensitive machines. The highly specialized rubber compounds used, unique geometrical shape and carefully controlled load deflection characteristics make the GK block an excellent lower cost alternative to installations normally required to reach system natural frequencies as low as 4 Hz. GK™ Blocks are available in load ratings from 4,000 to 18,000 lbs.
Examples of GK™ Low Frequency Foundation Block applications include:
- Coordinate measuring machines
- Precision optical equipment
- Precision grinders
- Vibrating conveyors
- Lab equipment
- Automated equipment or robotics
- Equipment operating in severe shock and vibration environments
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INFAB™ Foundation Isolation
In some applications, it is not feasible to mount a machine directly on vibration isolators. An integral part of most machine tool installations is a properly designed foundation which will meet the machine's support requirements. Isolating a vibration-sensitive or vibration-producing machine requires isolation of its support mass or foundation.
INFAB™ elastomeric (rubber) isolators provide low frequency isolation from induced shock and vibration for applications requiring support foundations and inertia blocks. INFAB™ isolation systems can be designed to have a natural frequency as low as 6.0 Hz.
A vibration site survey/analysis will determine the levels of vibration existing at your site, which is essential for proper vibration control recommendations to be made. Please contact Fabreeka's® Engineering Department for assistance with your particular application or if you would like information regarding a vibration site survey.
Some features and benefits of INFAB™ foundation isolation:
* Standard INFAB™ isolators are available in load ranges from 1,800 lbs to 4,400 lbs per isolator
* Dynamically tested for natural frequency and damping data
* Natural frequency as low as 6.0 Hz
* Compatible with a variety of foundation structural support designs to meet project requirements
* Alternative isolator characteristics and complete system designs available
* Extensive database and history of installations and system designs
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Precision machine tools like Roll Grinders, Machining Centres, 3-D Measuring Machines, Microscopes or Test Equipment, located typically in the middle of a plant, are often sensitive to vibrations, excited somewhere in the surroundings.
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2 ranges of shock absorbers for heavy machines:
Hybrid shock absorbers made up of helical springs combined with a viscous damping. Recommended for the important loads and the requests low frequency.
Applications:
Insulation of rotary machines of average and great importance, with a rotation higher than 400 rpm and comprising great dynamic stresses (unbalances, blockings, eccentricities). Generators example, pumps, centrifugal machines and compressors. Insulation of presses of average and great importance with rates higher than 150 blows per minutes.
Entirely metal shock absorbers made up of helical springs and internal cushions in stainless steel wire. Recommended for the important loads and the requests low frequency.
Applications:
Insulation of rotary machines or shocks, with or without basic use d´inertie: ventilators, compressors, generator groups, hammer of forging mill, presses eccentric, insulation passivates large equipment.
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The VIBROSTOP TSZ damper was designed for the isolation of large machinery, with significant weight and unfavourable ratio between the height of the centre of gravity and the base area, without fear of their falling. Loads range from 2000 to 20000 daN.
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The new, patented ISOLOC MULTIDAM machine mounting system for especially demanding requirements in vibration insulation and vibration damping as well as good machine stability in vertical and horizontal direction.
These new ISOLOC elements provide a very efficient vibration insulation, particularly for machines with high dynamic mass forces. The machines stand very quiet – a significant technical advantage of this new construction. MULTIDAM provides adjustable dynamic characteristics, adaptation to machine requirements, equal vertical and horizontal rigidity, excellent vibration, structure-borne sound and impact insulation. MULTIDAM machine mounting system is adjusted individually to your machine - just ask us.
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UNISORB® Novibra®¹ Anti-vibration Mounts
The Novibra® product line includes various rubber to metal bonded anti-vibration mounts. Natural rubber is used, generally loaded in a combination of shear and compression to achieve the most effective levels of vibration isolation and to ensure long life for the mounts and machinery mounted on them.
UNISORB® Novibra® Mounts are available in a wide range of shapes and sizes which vary according to the application. Many models are available from stock.
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RA and EF uses the rubber profi le in shear and compression,
obtaining good vertical fl exibility with the advantage
of horizontal stability. For normal speeds of approx. 1500 rpm, the RA and EF type provides a degree of isolation
of 75-85%. For better isolation, the alternative RAEM or
M can be chosen.
Its unique construction and the latest production methods
make Novibra® type RA and EF a high performance
mounting having a number of advantages:
• Rubber features are utilised effectively combining
compression and shear.
• Wide load rating options, 40-2100 kg.
• Corrosion protected to cope with arduous environments
on land or marine applications (Fe/Zn8C as per ISO
2081).
• Fitted as standard with an integral fail-safe design device
with resilient stop, making RA and EF ideal for use in
mobile or marine applications. The RA/EF-mounts can
accomodate occasional shock loads to 5 g reference to the
weight in hardness 60° IRH. The mount will withstand
shock loads up to 2 g without plastic deformation.
• Clear and durable product marking so that mountings
can be identifi ed even after several years in operation.
• Domed shape cover to protect against oil contamination.
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Precision, height adjustable, vibration damping machine mounts for accurate, efficient and economical machine installation
Typical applications:
Machine tools, rubber and plastics machinery, printing and packaging machinery.
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Entirely metal shock absorbers with multidirectional characteristics for the insulation of the shocks and the vibrations.
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Suitable for machinery and equipment which produce low frequency vibrations. Springs of different power can be combined in order to obtain the whole range of loads using the desired number of springs.
Available in several sizes.
TM and TA series are the best solution as ceiling sustainers.
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SPRING SUPPORTS
VARIABLE AND COSTANT SPRINGS SUPPORTS are constructed to supports loads up to 30000 Kgs, and with a standard range of travel up to 600mm, complete with ancillary equipments and collars.
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Suspension Spring
The Suspension springs are designed to provide a maintenance free flexible load bearing component allowing angular and shear movement whilst transmitting high axial loads. There is also a built in fail-safe device to prevent total mount failure in the case of severe overload.
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Spring isolation units type FSL comprise a group of heavy duty helical springs contained within robust steel platforms.
Applications
FSL springs can be used either under a foundation or mounted directly under machinery or building structures.
Construction
Fabricated steel platforms used with helical springs to BS 1726-1:2002. As standard the springs are painted black and the platforms are painted to the customer’s colour choice.
Properties
Low frequency vibration isolation for sensitive machinery.
Description of Diagram Fig 11.1
1) Re-enforced impermeable concrete pit.*
2) Farrat FV damper.
3) Re-enforced concrete foundation block.*
4) Farrat FSL springs.
5) Consolidated hardcore to firm ground. *
* Reinforced concrete foundation blocks and associated structures to be designed by qualified consulting engineers and constructed by contractors of proven ability and experience.
FSL Steel Springs can be used either on their own on in tandem with FV dampers. Where the system in likely to go through resonance and excessive movement is a concern it is recommended that FV dampers are used in conjunction with FSL springs. FSL steel springs can be employed in a variety of combinations and support arrangements, Farrat will design isolation systems to meet a customers specific technical requirements. To assist our customers in the smooth running of every project Farrat provide construction drawings and installation instructions with all FSL springs supplied.
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While hot forming machine tools (hammers, screw presses) use high kinetic energy for the metal forming, where part of this energy is dissipated into the ground causing there rather high vibration levels, however, in case of the cold forming process it is the sudden release of the stresses - built up in the press frame during the pressing operation - when cutting through the material (blanking).
In both cases GERB can provide special Spring-Viscodamper® combinations, which allow today direct spring support of the equipment whereas in the past quite massive foundations were necessary.
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Comprised of stainless steel cable threaded through aluminum alloy retaining bars, these helical isolator products ensure effective vibration isolation. Enidine Wire Rope Isolators are environmentally stable, high-performance shock and vibration isolators that are unaffected by temperature extremes, chemical attack, oils, ozone and abrasives. They are ideally suited for electronic cabinets, shipping cases, as well as pump, generator and compressor isolation.
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The SMAC CABLE wire rope isolators, which are entirely metallic and pocess multi-axis characteristics, well adapted for the isolation of materials exposed to shock and vibration in harsh environment (ex: embedded electronic enclosures).
The assembly of plates is ensured by:
stainless steel staples for 2305s to 2340s series
stainless steel or bichromated coated with zinc steel screw for 2345s to 2395s series and 2405s to 2450s series.
The plates can be delivered with Thru (Th), Countersunk (C), or Threaded (T) fixation holes.
All products can be customized to your exact requirements upon request.
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Advantages:
- Stability: Steel mounting provide stable characteristics and the height under load remains constant with time
- Unaffected by corrosion. Steel dampers are unaffected by oil, grease, solvents, adverse weather and corrosives products.
- Unaffected by temperature. Steel dampers withstand temperatures from - 70°C to 300°C without changing characteristics.
- Low natural frenquency. Steel mounting with springs can have natural frequencies as low as 3 Hz, which can provide up to 98% attenuation for low speed rotating machinery.
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Anti-vibration mounts
