wire rope anti vibration mounts pricelist

A wire rope isolator is a very high performance shock absorber and vibration isolator that can used in endless applications. Wire rope isolators are very useful vibration dampers because they maintain excellent vibration isolation performance under maximum shock in severe environmental conditions such as chemical pollution or extreme temperatures. They have a long life span and can adapt to elastic displacement in all dimensions, allowing multi-directional vibration isolation and they can be installed in many different ways.

There is elastic support for heavy duty machinery such as generators and vibration isolation for delicate applications such as precision instruments, transportation of missiles and satellites, processors, communication units, protection for navigation and launching systems as well as large scale construction. The working temperature for wire rope isolators is -75°C－+175°C, up to +370°C and each wire rope isolator comes with softened non-linear stiffness. The maximum dynamic displacement is over 70 percent of the space the mount takes up, the dynamic stiffness decreases when the displacement increases.

The AVAUD series of wire rope shock absorbers is optimised for both vibration isolation and impact protection of suspended electrical/electronic equipment, thanks to its dual-level toroidal cable winding.

More specifically, it combines a low vibration frequency with greater stiffness in response to impact, in accordance with the requirements of MIL-S-901D.

The AVAUD vibration/shock isolators are designed to meet the needs and requirements of applications in the marine sector, but customised versions can be made for various fields, such as the protection of land-based military equipment.

The structure is made entirely of stainless steel to ensure durability without variation of its elastic properties, eliminating any need for spare parts or replacements.

Look to Enidine for high performance Wire Rope Isolators and Compact Wire Rope Isolators. The wire rope isolators have stainless steel cable and RoHS compliant aluminum retaining bars, which provides excellent vibration isolation. The isolators are corrosion resistant, which makes them environmentally stable and high-performance in a variety of applications. The isolators are completely unaffected by oil, chemicals, abrasives, ozone, and temperature extremes.

The compact wire rope isolator is smaller than a traditional wire rope and can absorb shock and vibration in small spaces. Single point mounting offers flexibility for integration into existing products.

Both compact wire rope isolators and wire rope isolators can be used on galley components where motors and fans produce vibrations onto surrounding structures. They can also be used to control vibration and thermal expansion.

Use ITT Enidine Inc."s Compact Wire Rope Isolators for the best performance in vibration isolation. The compact design is smaller than most wire ropes and can provide both shock and vibration absorption even in situations where package space and sway are an issue.

ITT Enidine Inc."s Compact Wire Rope Isolator is made of all-metal, which gives the best multi-axis shock and vibration isolation. Even reliable in hostile environments, the WRI products have almost no maintenance and are highly resistant to oil, ozone, abrasives, and chemicals. Using WRI products can reduce the amount of premature equipment failure and costly machine downtime.

Even if you have a non-standard application, you may still be able to use regular Wire Rope Isolators. These standard products can suit nearly any application. In unique circumstances, Enidine can create a custom isolator for your needs.

We come across challenging work areas and harsh environments quite often. The defense forces have to tackle the tough terrains, rough seas and air turbulence during their routine forays. There are equipment, machines and sensitive electronic devices that are required to operate and perform in these conditions along with the human beings. The industrial environments with the chemicals, oils and water can be tough on the sensitive equipment and machines. The shock loads and vibrations can take their toll in the telling environment if not taken care of. This is where the wire rope isolators pitch in to effectively counter these forces and protect your equipment.

Simple construction with engineered design: The wire rope isolator is a simple looking piece of equipment. That is the reason you will find plenty of wire rope isolator

manufacturers around the world and in your local areas as well. The wire rope going round in loops through two aluminum brackets holding them looks easy to manufacture. However, there is a scientific engineering that is behind the design of a wire rope isolator. The diameter of the wire rope and the diameter of the loop are important considerations when it comes to meeting the vibration damping requirements. The elasticity of the loop makes it act as a spring which deflects under load. The deflection of 5 to 15 per cent is what the isolators can take easily.

Adequate corrosion protection: When you look at the wire rope isolators for sale a few things related to the corrosion resistance must be kept in mind. A good design makes sure that the isolator does not rust or corrode irrespective of the oil, water and chemical atmosphere that it is exposed to. The brackets are made of aluminum while the wire rope strands are of stainless steel. The hardware used must be plated in order to protect it from rusting. A good wire rope isolator manufacturer will ensure that all the environment protection systems are in order.

Helical wire rope isolators: The helical cable isolator is the commonly used product in the wire rope isolators damping applications. It is a versatile product providing maintenance-free service even in harsh environments. The selection tables help you in making a choice from the standard sizes with load capacities in the range from 1 KG to 2500 KGs. They are not only popular in the military applications but are also used in the industry. The capability of the wire rope isolators is well known to the engineers who do not hesitate in prescribing them for the areas that are prone to the passive vibrations.

Compact wire isolators: The circular wire rope isolators are recommended for applications where there is a limitation of space. The discerning feature is that they give the isolation protection in all the directions. The standard areas of application include avionics, electronics, and medical equipment but you will also find them in tough environments like military equipment, motors, pumps, and generators. Like the helical cable isolator, the circular wire rope isolators also provide a maintenance free operation and desired corrosion protection.

Andre HVAC International Inc. has been leading the drive against the vibrations with its wide range of wire rope mounts and isolators. If you try for wire rope isolators Canada you are likely to come across AHI. Being in this field since 2003, AHI offers customized solutions to its clients, wherever the need for the same arises. There are extensive wire rope isolator selection guides available in the form of catalogues and literature on the website for the ease of customers. The wire rope isolator price based on your selection is available on request.

Vibration is undesirable in many domains, primarily engineered systems and habitable spaces, and methods have been developed to prevent the transfer of vibration to such systems. Vibrations propagate via mechanical waves and certain mechanical linkages conduct vibrations more efficiently than others. Passive vibration isolation makes use of materials and mechanical linkages that absorb and damp these mechanical waves. Active vibration isolation involves sensors and actuators that produce disruptive interference that cancels-out incoming vibration.

"Passive vibration isolation" refers to vibration isolation or mitigation of vibrations by passive techniques such as rubber pads or mechanical springs, as opposed to "active vibration isolation" or "electronic force cancellation" employing electric power, sensors, actuators, and control systems.

Passive vibration isolation is a vast subject, since there are many types of passive vibration isolators used for many different applications. A few of these applications are for industrial equipment such as pumps, motors, HVAC systems, or washing machines; isolation of civil engineering structures from earthquakes (base isolation),

These are bladders or canisters of compressed air. A source of compressed air is required to maintain them. Air springs are rubber bladders which provide damping as well as isolation and are used in large trucks. Some pneumatic isolators can attain low resonant frequencies and are used for isolating large industrial equipment. Air tables consist of a working surface or optical surface mounted on air legs. These tables provide enough isolation for laboratory instrument under some conditions. Air systems may leak under vacuum conditions. The air container can interfere with isolation of low-amplitude vibration.

These are heavy-duty isolators used for building systems and industry. Sometimes they serve as mounts for a concrete block, which provides further isolation.

The focus on negative-stiffness isolators has been on developing systems with very low resonant frequencies (below 1 Hz), so that low frequencies can be adequately isolated, which is critical for sensitive instrumentation. All higher frequencies are also isolated. Negative-stiffness systems can be made with low stiction, so that they are effective in isolating low-amplitude vibrations.

Tuned mass dampers reduce the effects of harmonic vibration in buildings or other structures. A relatively small mass is attached in such a way that it can dampen out a very narrow band of vibration of the structure.

In less sophisticated solutions, bungee cords can be used as a cheap isolation system which may be effective enough for some applications. The item to be isolated is suspended from the bungee cords. This is difficult to implement without a danger of the isolated item falling. Tennis balls cut in half have been used under washing machines and other items with some success. In fact, tennis balls became the de facto standard suspension technique used in DIY rave/DJ culture, placed under the feet of each record turntable which produces enough dampening to neutralize the vibrations of high-powered soundsystems from affecting the delicate, high-sensitivity mechanisms of the turntable needles.

Every object on a flexible support has a fundamental natural frequency. When vibration is applied, energy is transferred most efficiently at the natural frequency, somewhat efficiently below the natural frequency, and with increasing inefficiency (decreasing efficiency) above the natural frequency. This can be seen in the transmissibility curve, which is a plot of transmissibility vs. frequency.

Here is an example of a transmissibility curve. Transmissibility is the ratio of vibration of the isolated surface to that of the source. Vibrations are never eliminated, but they can be greatly reduced. The curve below shows the typical performance of a passive, negative-stiffness isolation system with a natural frequency of 0.5 Hz. The general shape of the curve is typical for passive systems. Below the natural frequency, transmissibility hovers near 1. A value of 1 means that vibration is going through the system without being amplified or reduced. At the resonant frequency, energy is transmitted efficiently, and the incoming vibration is amplified. Damping in the system limits the level of amplification. Above the resonant frequency, little energy can be transmitted, and the curve rolls off to a low value. A passive isolator can be seen as a mechanical low-pass filter for vibrations.

In general, for any given frequency above the natural frequency, an isolator with a lower natural frequency will show greater isolation than one with a higher natural frequency. The best isolation system for a given situation depends on the frequency, direction, and magnitude of vibrations present and the desired level of attenuation of those frequencies.

All mechanical systems in the real world contain some amount of damping. Damping dissipates energy in the system, which reduces the vibration level which is transmitted at the natural frequency. The fluid in automotive shock absorbers is a kind of damper, as is the inherent damping in elastomeric (rubber) engine mounts.

Passive isolation operates in both directions, isolating the payload from vibrations originating in the support, and also isolating the support from vibrations originating in the payload. Large machines such as washers, pumps, and generators, which would cause vibrations in the building or room, are often isolated from the floor. However, there are a multitude of sources of vibration in buildings, and it is often not possible to isolate each source. In many cases, it is most efficient to isolate each sensitive instrument from the floor. Sometimes it is necessary to implement both approaches.

In Superyachts, the engines and alternators produce noise and vibrations. To solve this, the solution is a double elastic suspension where the engine and alternator are mounted with vibration dampers on a common frame. This set is then mounted elastically between the common frame and the hull.

Magnetism: Some experimentation which requires vibration isolation also requires a low-magnetism environment. Some isolators can be designed with low-magnetism components.

Acoustic noise: Some instruments are sensitive to acoustic vibration. In addition, some isolation systems can be excited by acoustic noise. It may be necessary to use an acoustic shield. Air compressors can create problematic acoustic noise, heat, and airflow.

is basically the weight of the isolated object with low-amplitude vibration input. This is the environment of apparently stationary objects such as buildings (under normal conditions) or laboratory instruments.

involves accelerations and larger amplitude shock and vibration. This environment is present in vehicles, heavy machinery, and structures with significant movement.

Cost of providing isolation: Costs include the isolation system itself, whether it is a standard or custom product; a compressed air source if required; shipping from manufacturer to destination; installation; maintenance; and an initial vibration site survey to determine the need for isolation.

Relative costs of different isolation systems: Inexpensive shock mounts may need to be replaced due to dynamic loading cycles. A higher level of isolation which is effective at lower vibration frequencies and magnitudes generally costs more. Prices can range from a few dollars for bungee cords to millions of dollars for some space applications.

Frequencies: If possible, it is important to know the frequencies of ambient vibrations. This can be determined with a site survey or accelerometer data processed through FFT analysis.

Amplitudes: The amplitudes of the vibration frequencies present can be compared with required levels to determine whether isolation is needed. In addition, isolators are designed for ranges of vibration amplitudes. Some isolators are not effective for very small amplitudes.

Vibration specifications of item to be isolated: Many instruments or machines have manufacturer-specified levels of vibration for the operating environment. The manufacturer may not guarantee the proper operation of the instrument if vibration exceeds the spec.

Not For Profit Organizations such as ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) and VISCMA (Vibration Isolation and Seismic Control Manufacturers Association) provide specifications / standards for isolator types and spring deflection requirements that cover a wide array of industries including electrical, mechanical, plumbing, and HVAC.

Negative-Stiffness-Mechanism (NSM) vibration isolation systems offer a unique passive approach for achieving low vibration environments and isolation against sub-Hertz vibrations. "Snap-through" or "over-center" NSM devices are used to reduce the stiffness of elastic suspensions and create compact six-degree-of-freedom systems with low natural frequencies. Practical systems with vertical and horizontal natural frequencies as low as 0.2 to 0.5 Hz are possible. Electro-mechanical auto-adjust mechanisms compensate for varying weight loads and provide automatic leveling in multiple-isolator systems, similar to the function of leveling valves in pneumatic systems. All-metal systems can be configured which are compatible with high vacuums and other adverse environments such as high temperatures.

These isolation systems enable vibration-sensitive instruments such as scanning probe microscopes, micro-hardness testers and scanning electron microscopes to operate in severe vibration environments sometimes encountered, for example, on upper floors of buildings and in clean rooms. Such operation would not be practical with pneumatic isolation systems.

The theory of operation of NSM vibration isolation systems is summarized, some typical systems and applications are described, and data on measured performance is presented. The theory of NSM isolation systems is explained in References 1 and 2.

A six-DOF NSM isolator typically uses three isolators stacked in series: a tilt-motion isolator on top of a horizontal-motion isolator on top of a vertical-motion isolator. Figure 3 shows a schematic of a vibration isolation system consisting of a weighted platform supported by a single six-DOF isolator incorporating the isolators of Figures 1 and 2. Flexures are used in place of the hinged bars shown in Figure 1. A tilt flexure serves as the tilt-motion isolator. A vertical-stiffness adjustment screw is used to adjust the compression force on the negative-stiffness flexures thereby changing the vertical stiffness. A vertical load adjustment screw is used to adjust for varying weight loads by raising or lowering the base of the support spring to keep the flexures in their straight, unbent operating positions.

The equipment or other mechanical components are necessarily linked to surrounding objects (the supporting joint - with the support; the unsupporting joint - the pipe duct or cable), thus presenting the opportunity for unwanted transmission of vibrations. Using a suitably designed vibration-isolator (absorber), vibration isolation of the supporting joint is realized. The accompanying illustration shows the attenuation of vibration levels, as measured before installation of the functioning gear on a vibration isolator as well as after installation, for a wide range of frequencies.

This is defined as a device that reflects and absorbs waves of oscillatory energy, extending from a piece of working machinery or electrical equipment, and with the desired effect being vibration insulation. The goal is to establish vibration isolation between a body transferring mechanical fluctuations and a supporting body (for example, between the machine and the foundation). The illustration shows a vibration isolator from the series «ВИ» (~"VI" in Roman characters), as used in shipbuilding in Russia, for example the submarine "St.Petersburg" (Lada). The depicted «ВИ» devices allow loadings ranging from 5, 40 and 300 kg. They differ in their physical sizes, but all share the same fundamental design. The structure consists of a rubber envelope that is internally reinforced by a spring. During manufacture, the rubber and the spring are intimately and permanently connected as a result of the vulcanization process that is integral to the processing of the crude rubber material. Under action of weight loading of the machine, the rubber envelope deforms, and the spring is compressed or stretched. Therefore, in the direction of the spring"s cross section, twisting of the enveloping rubber occurs. The resulting elastic deformation of the rubber envelope results in very effective absorption of the vibration. This absorption is crucial to reliable vibration insulation, because it averts the potential for resonance effects. The amount of elastic deformation of the rubber largely dictates the magnitude of vibration absorption that can be attained; the entire device (including the spring itself) must be designed with this in mind. The design of the vibration isolator must also take into account potential exposure to shock loadings, in addition to the routine everyday vibrations. Lastly, the vibration isolator must also be designed for long-term durability as well as convenient integration into the environment in which it is to be used. Sleeves and flanges are typically employed in order to enable the vibration isolator to be securely fastened to the equipment and the supporting foundation.

Branch pipe a of isolating vibration is a part of a tube with elastic walls for reflection and absorption of waves of the oscillatory energy extending from the working pump over wall of the pipe duct. Is established between the pump and the pipe duct. On an illustration is presented the image a vibration-isolating branch pipe of a series «ВИПБ». In a structure is used the rubber envelope, which is reinforced by a spring. Properties of an envelope are similar envelope to an isolator vibration. Has the device reducing axial effort from action of internal pressure up to zero.

Active vibration isolation systems contain, along with the spring, a feedback circuit which consists of a sensor (for example a piezoelectric accelerometer or a geophone), a controller, and an actuator. The acceleration (vibration) signal is processed by a control circuit and amplifier. Then it feeds the electromagnetic actuator, which amplifies the signal. As a result of such a feedback system, a considerably stronger suppression of vibrations is achieved compared to ordinary damping. Active isolation today is used for applications where structures smaller than a micrometer have to be produced or measured. A couple of companies produce active isolation products as OEM for research, metrology, lithography and medical systems. Another important application is the semiconductor industry. In the microchip production, the smallest structures today are below 20 nm, so the machines which produce and check them have to oscillate much less.

US4397069A, Camossi, "Device and process for the manufacture of vibration-damping and shockproof mountings incorporating at least one helically arranged metal cable and mounting thereby obtained", published 1983

Platus PhD, David L., SPIE International Society of Optical Engineering - July 1999, Optomechanical Engineering and Vibration Control Negative-Stiffness-Mechanism Vibration Isolation Systems

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The multi-directional cable mount range is manufactured solely from stainless steel, and is designed to offer a maintenance-free solution for use in extremely hostile environments where high levels of vibration and shock control are required. The cable mount are certified to various military standards including: MIL-STD-167 (vibration), MIL-STD-810 (environmental conditions) & MIL-S-901 (shock).

The captive design of the wire rope mounts allows them to be loaded in any direction, in compression, shear and tension. This maintenance-free solution provides excellent resistance to extreme temperatures and other adverse environmental conditions.

Shock and vibration rank among the most destructive agents in industrial environments. These disturbances erode the life of mechanical and electronic equipment – driving machinery from service long before necessary. Sometimes this premature deterioration stems from repeated overstress loadings, sometimes from fatigue failures of vital parts, and sometimes from a combination of both.

Isotech offers a variety of wire rope isolators that resolve shock and vibration issues in virtually any application. By selecting wire rope with the proper characteristics – wire diameter, number of strands, cable length, cable twist or lay, and the number of cables per section, we have created wire rope isolators that provide superior equipment protection. Ideally, passive isolation systems require no maintenance, use little space, and keep functioning under varying temperatures and in corrosive environments.

VMC Group offers a variety of wire rope isolators that resolve shock and vibration issues in virtually any application. By selecting wire rope with the proper characteristics - wire diameter, number of strands, cable length, cable twist or lay, and the number of cables per section, we have created isolators that provide superior equipment protection. Ideally, passive isolation systems require no maintenance, use little space and keep functioning under varying temperatures and in corrosive environments.

As an elastic element, wire rope isolators will afford attenuation of vibration disturbances in much the same manner as they attenuate shock inputs. Wire rope isolators provide inherent damping by virtue of relative motion between wire strands. This damping limits vibration response peaks and limits responses to start-up and shut-down transients.

Isolators must also attenuate shock with minimum dynamic travel. A design that buckles under heavy shock loads without bottoming or permanent deformation provides the large deflection needed to bring the impacts within acceptable limits. When shock load is applied, the isolators soften and deform. This displacement reduces the acceleration level, through the controlled buckling of the wire rope loops.

This wire rope design handles both shock and vibration. In addition, three-plane, all-axes isolation permits installation in any attitude - vertically, horizontally or laterally.