Get the right vibration and shock isolation for your equipment

Wherever there is a working equipment or machinery there are vibrations. They may appear harmless to a visitor or may go unnoticed by the people around depending on the intensity and noise generated. The vibrations are however very harmful to your machines and infrastructure. The surrounding equipment and supports also have their own natural frequency of vibration. The vibrations from a working machine are transmitted to the support causing them to vibrate sympathetically. The phenomenon of resonance occurs when the sympathetic vibration frequency matches the natural frequency of the support infrastructure. A loud noise is produced and the supports may vibrate violently causing damage. Thus, it is essential to go in for rubber vibration isolators in order to safeguard your equipment and machines.

  • The rubber vibration isolators are used to limit the amount of vibration energy transfer to the supports
  • The products are suitable for both stationary and dynamic applications.
  • Choice of size, application, and load bearing capacities are available in the product range.

Mount the equipment: The rubber isolation mounts have the elastomer element, which is responsible for the damping of vibrations. The mechanical energy is absorbed by the rubber vibration damper and dissipated in the form of low-level heat. The amount of damping is dependent on a number of factors like the frequency of vibration, weight of the equipment, and the surface area. The selection of the rubber mounts for vibration has to be done carefully by taking into consideration all the contributing factors.

Shapes and types: There are a variety of shapes and sizes available for the rubber vibration isolators and the selection is based on the application requirements. The shapes include cylindrical, hexagonal, and two-piece etc. In addition to the shape, the rubber isolation mounts are available as center metal bonded type and grommet type etc. to name a few. For applications where the equipment is to be suspended from the ceiling, the spring hanger mount vibration isolators are used.

Suspension of equipment: For the HVAC equipment, ducting, and pipes extensive use of spring hangers is done. The spring provides the deflection to take care of the load while the elastomer element provides the vibration damping. The suspended equipment and the support structure are isolated from each other by virtue of the elastomer which does not permit metal to metal contact. The spring hanger supports are used for ease of mounting. The air conditioning units which generate a lot of vibrations when the compressor works can be mounted on the rooftops by using the rubber isolation mounts while the entire ducting in the building can be suspended from the ceilings or support structure using the spring hangers.

Shock Vibrations: When there is an explosion or an earthquake strike, a shock pulse may be generated which results from a sudden acceleration. This form of shock vibration is highly destructive and damaging. Since an earthquake or a terrorist strike is not a routine phenomenon, it used to be ignored earlier. However, as people are becoming more aware they are concerned about seismic restraints and shock vibration control as well. The shock isolators are now being used extensively for the protection of buildings and sensitive high-cost equipment. They are highly recommended for vehicles used by the armed forces on land, sea and in air. The poor road conditions and situations arising out of collisions are “no match” for the shock isolators. Similarly, they are effective in turbulence, rough landings, high-velocity winds and sea storms.

Shackle mounts with an elastomer element between the metal plates are used as an effective anti-vibration product. The shock impacts are suitably absorbed by the rubber vibration damper in tough conditions. A wide variety of shackle mounts is available in varying shapes and sizes. These include the mounting plate and threaded stud type, square plate with corner holes type, and cap plates with elastomer type.

Andre HVAC International Inc. entered the anti-vibration arena way back in the year 2003. From a modest beginning then, AHI is present today in the majority of the anti-vibration products available in the market. The hallmark has been the consistent quality and customer service. The firm provides assistance to its clients on the various aspects of vibration control at the design stage itself. The customers also find AHI to be a one-stop solution for their anti-vibration needs because of the wide variety of products and selection support documentation. Whether it is a rubber isolation mount or a spring hanger, you can be almost sure of finding the suitable type at AHI Inc.

 

What are rubber vibrations mounts?

Rubber anti-vibration mounts, rubber vibration dampers and rubber isolation mounts are all used for the same purpose that is isolation of high frequency noise and vibration. In any industry a large machine such as a pump, compressor or industrial engine produces noise and vibrations. These vibrations can cause damage to equipment, prematurely wear out machines and create unsafe working conditions. Eventually this can affect the product quality and can even bring plant production to a complete stall. To protect your machinery, from such damage, rubber isolation mounts are necessary. These devices help reduce the amplitude and frequency of the vibration created by the machinery.

A properly sized rubber anti-vibration mounts will significantly reduce the vibration, shock and noise created by the machine thus increasing the life span of the machine.  These vibration rubber mounts creates a resilient connection to the machine and transfers the energy from the machine onto the mount which thus dampens the vibrations and shocks. Vibration damping mounts are commonly made with an elastomeric such as natural rubber which is bonded to a metal. This rubber vibration mount is then attached to a machine such as a generator that helps lower the natural frequency of the machine below the disturbing frequency, all without affecting the performance of the machine.

While an inappropriate sized mount might reduce the higher frequency vibration or noise, but the lower frequency conditions may amplify, resulting in worsening the condition. Hence it is important to select the right anti-vibration mount for your application.

Vibration mounts come in a wide variety of range. So, depending on your application in use one must accordingly select the right vibration mounts. For instance marine engine mounts are used as rubber vibration isolators in industrial applications such as diesel generators and engines. While, rubber cylindrical mounts also known as rubber bobbin mounts are used in light weight applications for isolation of shocks and vibrations.

The Common applications of rubber vibration mounts are pumps, roll mills, CNC machinery, military equipment, washing machines, industrial engines, HVAC systems, Aviation equipment, compressors, shipping containers, defense equipment and much more.

Andre HVAC International Inc offers the highest quality rubber vibration mounts and isolators at the most reasonable price. Here the mounts and isolators are made with the best materials for high durability and prolonged life span of your equipment. So, in case you are replacing worn out vibration mounts or have a special mounting requirement, we have it all to provide you with the best noise, vibration and shock isolation. Get in touch with us for any noise, vibration and shock isolation requirement and we will provide you with the best solution, customized to your specific application need.

Different types of anti-vibration mount & their applications

Anti vibration mounts are vibration isolators used in a wide variety of applications including power generation, industrial applications, HVAC applications, medical equipment, military equipment, air conditioners, compressors etc. These anti-vibration mounts installed in various applications help in minimizing the undesirable vibrations from the source and in turn enhance the performance of the machine.

Today, in this article we have discussed the various types of anti-vibration mounts available the market. So, depending on the application in use and the cause of problem, one can decide on the right vibration mounts for their application.

Types of vibration mount

Cylindrical mounts

Cylindrical mounts are rubber vibration isolators that are used in effective vibration isolation and noise damping over a wide range of frequencies. Cylindrical mounts also popularly known as rubber bobbin mounts are used for isolation of both active and passive vibration. In addition to this, they also help in suppression of shock and limit the structure-borne noise. Cylindrical vibration mounts that are made of high quality natural rubber and stainless steel metal are ideal for shear & compression of vibration and noise.

Bushing mounts

Bushing mounts also known as bushes or center bonded bushings made of high quality bonded rubber and metal are built to absorb extreme static and dynamic vibration in a machine. These fully bonded bushings with rubber compound in both the inner and outer sleeves are designed to eliminate high frequency vibration and noise, while supporting high loads in all directions.  These anti-vibration bushing mounts are designed in a wide range of metric sizes to suit almost every application. Rubber bushing mounts are commonly used in a flexible joints, motor vehicles, auxiliary equipment, military, light and heavy duty equipment, farm, drilling equipment, harvesters, combines, cooling towers, earth moving machinery, general machinery, industrial machinery, construction machinery and other such similar application.

Conical mounts

Conical mounts which is also popularly known as rubber cone mounts help in the isolation of shock, and vibration in machine. These cone mounts have a high load carrying capacity that assures a stable solution for all your vibration and noise problem. The conical mounts offer a progressive deflection and features easy installation. In addition to this they also provide protection for extreme load in tension or compression that acts as overload protection to manage excessive g forces. Conical mount are used in applications like engine and transmission mounts for trucks, buses, construction and agricultural vehicles. For more demanding vibration and noise reduction requirements, conical mounts are the most effect technology.

Select the vibration mounts with the right dampening elements

If you want to prolong your machine life by dampening the vibrations you can go in for the neoprene cork pads for your applications. The typical uses include air conditioners, pumps, presses, generators, fans and motors. The neoprene cork pad has a half inch thick cork layer centered between the ribbed neoprene pads. Neoprene is an excellent elastomer that is resistant to ageing, compression set, water and oil. Thus, the neoprene pad can withstand the toughest of environments on the shop-floor. The cork layer acts as an absorber of low frequencies of noise generated due to the machine vibrations.

The neoprene cork pad has to be cut in such a fashion so as there is not more than 50 pounds per square inch of machine weight on it when installed. Since the machines are

dampening elements

dampening elements

normally designed according to this load the neoprene rubber cork pad acts as an excellent machine mounting pad. While cutting the machine pad according to the mounting base of the machine, care must be taken to leave a ½ inch margin all around. The neoprene rubber cork pad can help in additional vibration isolation with the alternate rib height design. This design is well adapted to both high and low weight loads.

The neoprene vibration isolation pad also comes as an elastomer sheet with waffle molded design. The isolation pads can be placed beneath the feet of the machine by lifting it gently. The waffle design in the rubber pads allows for material expansion and highest deflection without loss of stability. The neoprene vibration isolation pads not only provide a solid hold for both the floor and machinery but also give the maximum resilience and minimum of creep.

The natural rubber vibration pads withstand a load of 45 pounds per square inch. Each square section has four suction holes of about ½” diameter that gives the firm footing to the equipment on the floor. The non-vibration pad comes in an 18” X 18” size made up of multiple square sections that can be easily cut and separated as per the customer requirement. The rubber pad has a rated deflection of 3/16”.

The rubber vibration dampening mounts come in various shapes and sizes to suit specific customer requirements. The vibration isolation mounts come with a mounting stud and nut for ease of installation. Another rubber vibration isolator comes a coil spring and mounting cap or plate on either side. The other type of rubber vibration mounts and shock mounts include products like center bonded mounts, grommet isolators, machinery mounting pads, platform mounts and two-piece mounts etc.  The vibration rubber mounts result in greater machine accuracy, longer service life, smoother operations and reduced maintenance.

Andre HVAC International Inc. made a modest beginning in 2003 when it came out with its range of vibration dampening sandwich mounts, rubber isolation pads, HVAC mounting pads and rubberized hangers. From the humble beginning, AHI is today a global enterprise that caters to vibration isolation needs and requirements of a large number of customers.