The compact wire rope isolator unleashed!

The electronic components fitted in machines and panels are very precise and sensitive in nature. When the electronic equipment runs, there are parts that produce the hum and vibrations which can cause serious damage to the surrounding components. The first

anti-vibration mount wire rope isolator

anti-vibration mount wire rope isolator

requirement of the vibration damping needs was met with the elastomer pads. However, the rubber vibration mounts were unable to perform due to temperature variations. Despite having heat dissipation devices installed the electronic components get heated to high temperatures.  The vibration pad was ineffective in the concurrent shock and vibration application. The fans used for cooling the electronic devices were also producing vibrations. The anti-vibration mount wire rope isolators were too big for the electronic applications and hence an alternative was worked out. That is when the circular cable isolators were born. The characteristics: The circular cable isolators have a homogenous design and a single point installation. Thus, they provide multi-axis isolation which is quite consistent. Given the small size, the compact wire rope isolator is well suited for the separation of key fundamental components rather than the complete system. Not only are the compact

compact wire rope isolator

compact wire rope isolator

isolators economical but also are suitable for high-performance design systems. As far as the maximum dynamic displacement is concerned, it utilises 70 per cent of the space taken up by the circular cable isolators. The dynamic stiffness decreases with the increase in displacement. The resilience is shown by the cable isolator in the case of a shock loading. Due to the impact loading the shock isolator does buckle but does not get permanently deformed. It is able to spring back into position once the shock load is removed. The construction: The cable isolators are made up of stainless steel 304 grade wire rope and suitable aluminium alloy retaining bars with T6 heat treatment. The strands of high tensile steel wire are interwoven to construct the vibration isolation wire rope. The

vibration isolation wire rope

vibration isolation wire rope

construction gives the circular cable isolators the desired strength to withstand the shock load and depict resilience. The metallic constituents are unaffected by ozone, chemicals and oils. This is because of the basic inert nature of the raw material used in the construction. In fact, the circular cable isolators can withstand environmentally unfriendly and harsh requirement also.  They also withstand extreme temperatures from -100oC and going up to 250oC. The temperature range covers the majority of applications in the industry today. The load capacity is from 5 to 35 KGs and well suited to the electronic industry. The products also conform to a number of military standards and industry specifications. Additional features: The circular cable isolators depict non-linear attributes in the stiffness characteristics. As compared to the larger shock deflections, the smaller deviations are normally linked with vibration damping which has a different spring rate. The cable isolator’s vibration damping is to the tune of 5 to 15% depending on the size and input level. Since, the compact wire rope isolator is capable of operating on more than one axis; it can withstand compression load, 45o compression load as well as the shear load very easily. The versatility of the design allows the compact wire rope isolators to be used in a number of applications. In the electronic industry, they used for CD-ROM drives and disk drives. These devices have rotating parts which generate vibrations and humming noise. The equipment like centrifuges and medical ventilators make use of the compact design. The varying load and speeds of rotation are well absorbed by the anti-vibration mount wire rope isolators. Then, there are a variety of applications like avionics, sound systems, video displays, audio-visual combinations, small motors and pumps, sensitive lab equipment and electronic devices where the circular wire isolators are deployed. People buy wire rope isolators as they are a versatile piece of equipment offering vibration and shock mitigation solutions. Andre HVAC International Inc. has a number of anti-vibration mount wire rope isolators, circular cable isolators and vibration damping systems in its product portfolio. The shock isolators are well suited for electronic devices and sensitive equipment. As the leading compact wire rope isolator supplier in Canada, they cater to a large number of electronic industry applications and defense requirements. They made a modest beginning in 2003 but with the recent expansions the product range; AHI has a global reach now. The products with technically advanced features can take care of all your anti-vibration requirements. The product selection process has been made easy with the availability of catalogues and tables available on the website. AHI also helps its clients with customized solutions.

Strengthen your protection system with equipment isolation mounts

Vibrations can lead to a severe damage to your working systems, precision machines and your HVAC equipment. An effective deployment of hard rubber mounts and isolation mounts is needed to guard your equipment. Every machine or piece of equipment has its own natural frequency. When the induced vibrations from motors, fans, pumps etc. cause it to vibrate harmoniously at its natural frequency, resonance is created and produces a

heavy noise. The result is a loss of precision or damage to the machine. The equipment isolation mounts and hangers separate the equipment from the vibration source, thus bringing the damage under control.

Rubber anti-vibration mount: A properly installed hard rubber mount will lead to a reduction in the vibration and noise generated by the machine. The rubber anti-vibration mounts are responsible for creating a flexible connection to the machine. The energy from the

Automotive rubber mounts

Automotive rubber mounts

equipment is transferred to the equipment isolation mount which dampens the vibrations. The hard rubber mounts limit the level of amplification of the resonant frequency by dissipating energy in the system. The amount of damping must be kept under check, as an increase in damping tends to reduce isolation at higher frequencies.

Grommets rubber: We have sensitive instrumentation in our labs, homes and industry and it requires protection from vibration and shock. The anti-vibration grommet rubber is specially designed for these applications. These vibration absorbing grommets are made up of two parts, the insulator and the shoulder screw. The raw material used for the insulator is EPDM rubber, thus providing it with the requisite durability. The protrusions on the mating surface of the insulator provide the resilience to dampen unwanted noise and vibration. The instrument is anchored to the surface with the help of nickel plated screws.
Fan rubber mounts: Fans, like any other rotating piece of equipment, generate vibrations. Fans are like any other rotating part and generate vibrations. The fan vibrations can significantly become noisier when there is a rotor dynamic balancing problem. The fan rubber mount is quite effective in isolating the fan vibrations from the support structure. Thus, the support structure stays protected from vibration damage and noise is greatly reduced.

HVAC rubber mounts: The neoprene based HVAC rubber mount is ideal for mounting the air conditioner and HVAC equipment on the rooftop. The rubber mounting has a tapped hole in the center of the rubber mount and a flanged base plate. The whole rubber mounting is neoprene rubber based allowing for good corrosion resistance and deflection

Rubber  isolation mounts

Rubber isolation mounts

properties. Whether it is a fan rubber mount or an HVAC rubber mount, both offer excellent noise control and vibration damping properties. The other HVAC equipment like the chillers and air handling units etc. are also mounted on the support structure with the help of rubber HVAC mounts. However, in case the HVAC equipment or the ducting is required to be suspended the HVAC rubber hangers or the spring hangers are preferred.
Cylindrical vibration mounts: The cylindrical vibration mounts are very similar to the other hard rubber mounts but only different in shape. As the name suggests the round cylindrical profile allows for easy placement and installation. There are plenty of variants of the cylindrical mounts. There is one with a threaded metallic insert bonded to it while the other has a threaded stud protruding out. The insert or the stud is used to fasten the equipment to the cylindrical vibration mount. The elastomer element remains in contact with the support structure or floor and generates enough friction to prevent the running equipment from moving. The twin-stud cylindrical vibration mounts have the threaded studs on each side with the elastomer in the center. These mounts are used to connect two pieces of equipment without the transfer of vibrations from one to the other.

Andre HVAC International Inc. made a modest beginning in 2003 and has grown from strength to strength over the years. As the name suggests the rubber mounts and isolators for HVAC equipment were the initial offerings from the company. Andre HVAC International Inc. is well known in the area of HVAC rubber mounts. The building owners work in tandem with AHI for installation of heating ventilation and air conditioning systems. The range also includes the anti-vibration fan mounts, cylindrical vibration mounts and grommets rubber. The hard rubber mounts and equipment isolation mounts are so well accepted in the market that they have spurred the growth of the company into rubber anti-vibration mounting range of products.

 

Take care of the HVAC equipment with suitable vibration isolators

Most of the tall buildings, skyscrapers, malls, office complexes, hotels, hospitals, and industries have the Heating Ventilation and Air Conditioning systems installed. Keeping in mind the vagaries of the temperature, it is almost essential to have the HVAC systems in

vibration isolators

vibration isolators

order to have the business progress smoothly. The HVAC systems are both voluminous and bulky and come with a number of moving parts. When the installed systems are running you can hear the noise that the equipment makes. There are a huge amount of vibrations generated which if unchecked can pollute the working environment in the building.

The vibration isolator design: The government regulations require that the HVAC equipment is placed on top of the building. The vibration isolator pads for HVAC equipment come in handy for such installations. The vibration isolators consist of an elastomer element that is bonded to a metallic plate or stud on which the HVAC equipment is mounted. The vibration eliminator HVAC is selected based on the load and deflection parameters. It is called a vibration eliminator as it does not allow the vibrations to pass from the moving parts to the floor or to the surrounding support structure. The vibrations are absorbed by the rubber element and the energy is dissipated into the atmosphere as low-grade heat.

Environmental protection: The choice of the elastomer material in the vibration eliminator HVAC is chosen based on the environmental conditions in which it has to perform. For neat and clean environments within the rooms and chambers, simple rubber compounds are suitable. However, for exposed environments like rooftops and industrial floors with oil and water, it is recommended to go in for neoprene vibration isolators. The metallic part can be galvanized or powder coated as per the customer requirements and the environmental conditions. For small air conditioners the vibration isolators are available with a threaded insert enclosed in a neoprene mounting pad. The air conditioner feet can be placed on the neoprene rubber mounts and tightened with screws.

Hanger arrangement: In many installations, it becomes necessary to suspend the HVAC equipment and ducting from the ceiling but above the false ceiling. This area lies directly on top of the working areas and needs a very good vibration control. The spring vibration isolators HVAC are the right choice for such applications. The vibration spring isolators

seismic isolation

seismic isolation

consist of rectangular metallic sheet housing with elastomer elements and a spring with a cap. The vibration isolator spring housing is suspended from the ceiling by using a wire or rod. The metal to metal contact is avoided through a rubber washer.  The ducting or equipment is suspended from a stud that passes through the hole in the spring isolator bracket, the bonded elastomer element and the spring. The stud is tightened with a nut on top of the spring cap.

Work concept of the isolator: The spring gets compressed under the weight of the HVAC equipment, while the elastomer element ensures that the vibrations do not pass on to the metallic suspension and the support structure. In the case of shock or excessive vibrations the vibration isolation spring is assisted by the deflection characteristics of the elastomer element. The spring vibration isolators HVAC are available as single and double deflection types to suit the desired customer requirements. Some vibration isolators are supplied with the springs in the pre-compressed condition from the factory itself. A scale is provided on the inside of the rectangular sheet metal bracket on which the deflection reading can be easily read.

Flexible arrangement: The hole at the bottom of the vibration isolator spring bracket is quite large and allows for a 30-degree arc variation. This allowance takes care of the construction errors which at times can cause problems in the installation process. Thus, the spring vibration isolator HVAC is a versatile hanger for use in the installation of the HVAC equipment.

Andre HVAC International Inc. has been in the field of HVAC vibration damping and isolation right from its inception year 2003. The range of products is very large and allows you to make a selection based on the load bearing capacity and deflection characteristics. The environmental conditions and space constraints also play an important role in the product selection. AHI also helps its clients by providing them with customized solutions wherever the need arises. Product catalogues and specification sheets are available on the website and on request in case the data is required by the client.

The anti-vibration mountings offer solace from the ill effects of vibrations

With the rapid expansion and penetration of the internet, people have got an access to valuable information. Today, people are much more aware of the vibrations produced by the prime movers and their ill effects. It is heartening to note that the buyers of equipment are concerned with the oscillations generated and noise pollution caused when the

anti vibration spring mount

anti vibration spring mount

equipment runs. The manufacturers do take care of the internal protection for the sensitive parts of the machine but the external aspects are generally the responsibility of the buyer. Thus, the anti-vibration mountings come under his scope. Let us look at some of the solutions.

Rubber bushings:  Metal bushes are bonded with rubber to create rubber bushings that provide vibration damping and reduction in noise. The typical applications include wheel suspensions, vibratory feeders and mobile power equipment. The resilience property of rubber helps reduce wear and eliminates the use of lubricants.

Anti-vibration rubber mounts: The anti-vibration rubber mounts is a product similar to the bushings with a metal stud bonded to the elastomer. The anti-vibration rubber mount is placed directly on the level floor and the machine legs are positioned on the stud and tightened. The installation is very simple and does not require any grouting or civil foundation work. The weight of the machine is evenly distributed on the anti-vibration mounts. The elastomer element creates the desired friction with the floor and prevents the machine from walking. There are other types where there is a bonded metal plate on top of the elastomer element and the equipment is just placed on top. The anti-vibration rubber mounting not only protects the equipment but also improves the comfort level of the operator. They find a wide application in the railroad, marine and automotive industry.

Anti-vibration mounts: The anti-vibration mounts are available in a variety of shapes and sizes to meet the specific customer requirements. The types available are pedestal, sandwich, angular and cylindrical mounts rubber. The buyer needs to be clear on the space availability, load capacity, deflection requirements and environmental conditions with regard to the operation of the anti-vibration rubber mount.  The highly knowledgeable customers directly ask for the compactor, shock and shear compression rubber mounts. There are others who select the anti-vibration mounts with the neoprene elastomer. Neoprene is especially effective in harsh environments where there is exposure to oil and water.

Anti-vibration fan mounts: While the most commonly used fan is the ceiling fan but you will

anti vibration mount

anti vibration mount

find that fans are used in multiple applications like blowers, air conditioners, and cooling fans etc. The fans are primarily driven by motors and hence are prone to vibrations. Rotating parts also need static and dynamic balancing; otherwise, they can create a ruckus. The electronic parts like chips, logic control units, central processing units, power supply etc. all require cooling by small fans to avoid overheating and burnouts. The anti-vibration fan mounts for electronic equipment ensure that vibrations are dampened and they do not damage the sensitive parts. The rubber mounts are small in size based on the small fans that cool the electronic panels in the machines but their performance cannot be undermined.

Automotive rubber mounts: All automobile manufacturers make extensive use of metal bonded rubber mounts for mounting of the engine, transmission and suspension on the chassis. The automotive rubber mounts are customized according to the mounting requirements spelt out by the manufacturer. The engine and transmission produce a tremendous amount of vibrations when in operation but you can hardly feel any of it inside the vehicle. The reason is the damping and isolation provided by the automotive rubber mounts. Similarly, bracket rubber mounting is used in the automobiles to isolate the sensitive parts from the vibrations of the chassis when the automobile is moving on the road. The rubber interface absorbs the vibrations while the bracket holds the part to the chassis.

The HVAC anti-vibration rubber mounts happen to be a specialty of Andre HVAC International Inc.  The anti-vibration mounts can give you the peace of mind with regard to keeping the vibrations in check and noise under control. The electronic parts and sensitive equipment need to be taken care of with adequate vibration damping as their performance gets impacted with the vibrations. A longer life span is possible with the use of these rubber isolation mounts and rubber anti-vibration mounts. Needless to say, the anti-vibration mounts form an integral part of the industry, labs, offices and homes and there is no better option than AHI to source them from.

The dynamics of the spring isolators in their modern avatar

A lot of developments have taken place over a period of time in the spring vibration isolation hangers. In the initial years, pads of cork and rubber with a hole in the center were used as vibration damping materials within the hanger frame. Some of the spring

spring isolation hangers

spring isolation hangers

vibration isolators used the spring only for the desired deflection. It was much later that the modern spring loaded isolation hangers came into the existence. They have the single deflection and double deflection variants available to match the deflection requirements of the clients.
The construction of a spring vibration isolator is simple. It has a rectangular steel strip frame with holes at the bottom and top. A round pad elastomer is bonded to the metal frame at the bottom. A spring with a cap is placed on the elastomer pad. The part for which vibration isolation is required is suspended by a stud that passes through the bracket, elastomer and spring and is tightened with a nut on the spring cap. The hole in the bracket is so large that it allows a 30-degree angular freedom to the suspended part. Thus any variation in the construction or supporting structure is easily taken care of.
Like the bottom portion, the top of the spring isolator is also linked to the rigid structure through a wire or stud. The stud passes through the top hole in the rectangular bracket, round rubber pad, steel washer and is tightened with a nut. Here the rubber element ensures that there is no metal to metal connection and the structure is isolated from the hanger. The large diameter of the steel washer is a safety feature and in the case of a fire, even if the rubber burns the steel washer holds.
The features of the spring loaded isolation hangers are as follows:
• Adequate corrosion protection is provided to the rectangular steel plate housing by powder coating or galvanizing.
• The load capacity of the rectangular housing is tested at a multiple of 5 to the rated load capacity.
• Color coding is done to indicate the load bearing capacity and the deflection characteristics. The steel washer integrity is checked at 50 per cent overload conditions.
• As per the customer requirement, the spring vibration isolators can be supplied with the springs in the pre-compressed state from the factory.
• The spring vibration isolators are designed for a misalignment within an arc of 30 degrees.
• Neoprene is the preferred elastomer material for its capability to withstand tough environmental conditions.
• The spring isolators are easy to install. Direct mounting on the support structure or the stud rod is possible.

The spring isolators for HVAC are used to suspend the air conditioning equipment and ducting etc. from the ceiling or the support structure. The spring isolators HVAC work on the same principle as any other spring vibration isolator and can provide the desired spring deflection. The scale sticker on the bracket inside allows you to read the amount of deflection under load conditions. Based on the load capacity and deflection required you can easily make the choice of the right spring isolator for HVAC system. The spring

spring isolation hangers

spring isolation hangers

isolators for fans provide the ideal vibration damping with similar loads and deflections.
The chillers which are mounted on the floor are a very heavy piece of equipment. So instead of hangers, the spring isolators for chillers utilize the floor mounting techniques. Heavy springs are used along with the metallic brackets to suspend the heavy chiller tanks at the legs and other support points. Sometimes a set of springs is used in the same spring isolator to meet the load and deflection requirements. Since the flooring is isolated from the vibrations in the chiller tanks, the chillers can also be mounted on the rooftops to meet the regulatory guidelines.
If you are looking for spring isolators Edmonton or spring isolators in Houston, the right place to go is Andre HVAC International Inc. The company which came up more than a decade ago is highly specialized in the spring vibration isolators. The company website provides you with the data and tables for easy selection of the spring vibration isolation hangers. You have to clear on the dimensions and space availability along with the load and deflection requirements in order to make the choice. Whether it is the requirement for a chiller, fan or the complete HVAC system, you can find a wide range of the spring isolators in each category.

The neoprene elastomer based anti-vibration pads and mounts have come a long way

The history: The equipment and machinery mounting pads are an important vibration control components used by the industry. Though there are a number of machine mounting pads available in the market you can make a choice depending on your requirement. They necessarily consist of a metallic portion that is bonded to the elastomer. About three-quarters of a century ago the machine pads were designed for shear loads. The shapes were circular or the parts were available in strip lengths so that they could be cut to size. However, the product failed due to overloading. The bond between the metal and elastomer gave way. As a result, the compression mountings came into existence.

Design changes and material selection: The machine mounting pads based on the compression principle can withstand overloading and have a deflection characteristic similar to the shear load mountings. Over a period of time, a lot of improvements have taken place and the machinery mounting pads are available in single and double deflection types. You can also opt for the machine pads that have the rubber bonded at the bottom of the base plate. These machine mounting pads do not require any anchoring as the friction between the floor and elastomer holds the machine in place. The choice of neoprene as the elastomer element was natural because of its resistance to oil and water. The machine pads with neoprene elastomers perform well in the harsh industrial environments. The top bolt secures the machine feet to the machine pad. The process of installation is extremely simple and all you have to do is to lift the machine and place it on top of the machine mounting pads.

A versatile product: The neoprene pad with an alternating height rib pattern is used to dampen the vibrations and noise caused by equipment that operates at medium or high rpm. Typical examples include transformers, generators, compressors, fans, pumps and air conditioners. The neoprene pads are about 10 mm thick with a load capacity of 0.05 Kgf/ mm2. The pads can offer a deflection of about 3 mm and we can use multiple pads in layers if the deflection requirements are higher. Neoprene has better environmental standing in harsh conditions as compared to natural rubber. The neoprene pads can work effectively in the industrial atmosphere involving water and oil.

The combination with a natural product: The neoprene cork pad is made from a pair of neoprene ribbed sheets with a cork center sandwiched between the two. The total thickness of the neoprene cork pad is around 25 mm. It has excellent resistance to ageing, compression set, water and oil. The loading capacity is the same as that of a neoprene only pad at around 0.05 Kgf/ mm2. However, the neoprene cork pads offer a much higher deflection at 4.5 mm. Here also multiple layers of the neoprene cork pads can be used for higher deflections. The applications include vibration isolation from compressors, generators, pool pumps, air conditioning units and a variety of other equipment.

Other anti-vibration products: For old pieces of equipment, simple vibration absorbers in the form of rubber squares and composite foam with a height of about 20mm are the most suitable. They can provide solace from the noise emanating from the vibrations shaking the whole support structure. You can slide them beneath the furnaces and they act as furnace thermal mounting pads. Care must be taken that they are not exposed to naked flame or molten metal. The furnaces are otherwise insulated and hence these products give the desired performance. The HVAC mounting pads are used for installation of the air conditioning equipment. As per the recent regulations, the HVAC equipment is to be mounted on the rooftops of the high rise buildings. Since these pads are exposed to the atmosphere, neoprene is the ideal choice of the elastomer in these vibration isolation pads.

Taking cues from the excellent properties that the neoprene elastomer exhibits, Andre HVAC International Inc. has come out with a wide variety of anti-vibration pads and mounts based on it. Neoprene alone and in combination with cork provides very effective vibration damping. Whether it is the machinery mounting pad or the HVAC mounting pad, an exclusive range is available from AHI in neoprene. You have to come with the dimensions, load and deflection requirements and make a selection from the catalogues and data sheets available online. In case you need further help, you can contact our support team for the customized solution.