In Industrial engineering or in any manufacturing industry, most of the sound or noises are generated through rotating machine components that travel to the entire structure and mounting floor. The movement of machine parts result in high frequency sounds, vibration, and noise that affects the stability of structure and also results in the wear and tear of a highly accurate machine components. Vibrational energy has its own independent effect on every machine tool components, which results in to uncertain machine break down and productivity loss. Technically, vibrational energy is a form of mechanical energy that moves through objects and disrupts the normal operation. In order to reduce the effect and transfer of vibrations, a scientific approach is adopted wherein vibration in any system is managed by either isolating it or by dampening it. Equipment’s like rubber mounts and vibration isolators are used for isolation of vibrating machines in the industry.
By installing rubber mounts or vibration isolation system, they prevent high frequency vibration from entering the system and dissipating the machine. Vibration isolation systems for mechanical components require some amount of damping. Damping dissipates mechanical energy from the system and attenuates vibrations more quickly. Without damping, the system will vibrate and ultimately lead to break down of the machine. One of the cheapest and best form of vibration isolator and dampening device is Rubber mounts.
Rubber mounts are usually made of neoprene or cork that are used in equipment mounting stage. Rubber mounts or rubber isolators are installed when mounting the machine. This installation acts as a dampening layer between vibrating source and vibration receiver. It plays a vital role in industrial systems that face constant vibration issues. So, when induced with vibration it dissipates the energy by deflecting itself, ensuring minimum transfer of energy and regains its original position. Application and the area of source, which needs to be damped plays a decisive role in selecting the optimum size of rubber mounts. While there are rubber isolators as well that are used for small equipment to supplement air-handler internal isolation, or where there is little to no acoustical sensitivity.
Rubber Isolation mounts are majorly designed from cork and neoprene. They are available in many sizes solely dependent upon application. In situations where the cork pads lack to serve the purpose of vibration isolation, an alternative rubber isolator crafted from neoprene pad is used, which yields more deflection and better vibration isolation. Another factor to be taken in to account while selecting rubber isolators is the operating frequency at which the source transfers energy to the receiver. Frequency plays a vital role in selecting the form and structure of rubber mounts and isolators. Complex internal structure and variable density of dampening material used in developing rubber mounts and isolators, offer desired results and is suitable for various application. Rubber mounts and isolators prove to be very effective equipment’s that help control vibration and noise issues especially at a very reasonable operating cost.
Vibrations and dynamic chaos is highly undesired phenomenon in machines as well as mechanical or civil structures. These uncontrolled mechanical energies create disturbance, discomfort, and damage the entire mechanical system or the structure. It degrades the accuracy and precision level of the machines, resulting in heavy losses in terms of energy and resources. For these reasons, money, time and effort are spent to get rid of both vibrations and noise or chaos or to minimize them. In order to tackle the adverse effects generated through vibrations it becomes essential to understand the type of vibrations created in system and accordingly install vibration isolators.
ANDRE Rubber Mounts RMD Series
The vibration isolation techniques are employed based on the type and severity of vibrations. Across the industry, vibrations are categorized under the category of either Active vibration or Passive vibration. As the name suggests, active vibration is the technique of isolating undesired vibrations or mechanical energies through installation of sensors and actuators that produce disruptive interference and creates counter effect on incoming vibrations. On the other hand, the methodology adopted to isolate undesired vibrations by means of buffering elements that creates layer between source of vibration and receiver, protects from undesired effects created through vibrations. The role of passive isolator is to absorb mechanical energies and deflect within the elastic limit under the action of load. It should be capable to regain its original shape and size once the load discontinues. One of the most popular and effective means of vibration isolation includes rubber mounts & rubber hangers.
Elastic properties of rubber permit maximum absorption and flexibility when subjected by undue vibrations. Flexibility in rubber polymers dissipates the energy and ensures minimum transfer of energy from source to receiver of the entire system. Rubber mounts are widely adopted in all automobile, industrial and non-industrial applications. Type and selection of rubber mount for a particular application is extremely critical hence, utmost care and all set of parameters needs to be taken in to account while selecting perfect rubber mounts for any set of application. One of the most basic factors to be taken in to account is the size of vibrating source. Size of system to be isolated defines the size of rubber mount. Smaller the vibrating source lesser the number of rubber isolators to be installed whereas, larger systems demand for multiple rubber mounts and isolators.
Secondly weight of system to be supported defines the type and section of rubber mounts to be selected. All rubber mounts are designed to support and work under the specified load range and any kind of overloading results in loss of isolation property as well as shelf life of rubber mount. Factor which governs any isolation methodology depends on the application in which it needs to be installed. If rubber mounts need to cater the requirement in corrosive environment, it needs to be designed and equipped with special materials or in case of acoustic environment which requires optimum level of noise reduction then, properties of rubber isolators need to be taken in to considerations. Rubber isolators and mounts are considered to be an effective solution to all vibrations problems faced across the industries.
The age where we are constantly upgrading our technological system and focused towards developing highly precise and accurate manufacturing processes; isolation of machinery to prevent the transmission of vibration and noise is extremely critical. Vibration control proves to be efficient whenever the equipment is located on higher floor or next to quiet surroundings. Rubber mounts is primarily used for reducing the effect of the dynamic forces generated by moving parts in a machine into the surrounding structure.
Every machine during its operation creates vibration or shock of varying intensity or amplitude. In general, speed and vibrational forces share direct proportionality with each other. The requirements for isolating these vibrational forces purely depend upon the local conditions of installation and applications. There are three principle factors
Rubber isolation mounts
which control the selection of a vibration isolator for a particular machine or application. The first is the weight to be supported, the second is the operating frequency of the machine and the third is the rigidity of the structure supporting the machine. Scientifically vibration is a resultant force and the role of rubber mount is to provide an opposed force which can effectively reduce the transmission of vibration to the other elements. To provide the desired isolation or dampening, rubber mounts need to be composed of truly resilient material, which when subjected to a static load, deflects and isolates the source of vibration from receiver.
Rubber isolation mounts are highly engineered yet very simple device, designed to isolate shock and reduce noise. The characteristics of Rubber isolator mounts determine its efficiency as a device for storing vibration energy and amount that it deflects under load. In case of shock isolation, rubber mounts dissipate the energy with each impact and ensures there is no transmission of energy. In case of noise, rubber mounts act as a resilient medium between the equipment and the structure. This breaks the path of structural borne noise which ultimately results in noise reduction of areas outside the machinery room and in the area around the machine.
Rubber motor mounts are used to reduce internal vibrations of the motors and its selection depends upon operating frequency or on the load of motors. Rubber mounts are available in various mounting arrangement and materials. The most widely adopted type of rubber mounts are cylindrical mounts & metallic mounts which offers optimum vibration isolation and dampening. In general scenario, where the amount of load is less, rubber mounts made up of natural rubber are implemented. Whereas under critical scenario, where amount of load and operating frequency is on a higher side, synthetic rubber mounts are implemented as the deflection/ isolation offered by synthetic rubber is much superior as compared to natural rubber. Rubber mounts acts as a buffer between source of vibration and receiver of vibration and the capability of rubber isolators defines the stability of entire structure. The Shape, size, location and construction of mounts vary and solely depending upon the type of application. Right from washing machine to heavy engine and motors, rubber mounts play a crucial role. Rubber mounts prove to be one of the best and cheapest critical component in tackling unwanted vibrations and noise.
Andre HVAC Inc a leading supplier of rubber in shear mounts
Andre HVAC Inc is a major supplier of a wide variety of rubber in shear mounts designed to suit applications as diverse as the automotive, defense, transport, construction and industrial markets. The company offers an uncompromising commitment to quality and standard of products supplied to clients for the purpose of isolation of vibration and shock. Based on the requirement of clients and application in use, the rubber in shear hangers or mounts is customized to suit their needs.
Rubber in shear mount supplied by the company
The rubber in shear mounts offered by the company is developed using high quality raw material and is in demand across various industry. Their superior quality ensures smooth functioning of application during its operation. These rubber mounts and isolators are efficient, low cost and engineered to offering maximum isolation to the application in which they are installed. The rubber mounting anti- vibrations generally comes in single of double deflection and is an effective isolator in standard application
These rubber mounts are known to dampen extreme shocks, vibration and even low frequency machine noise. The isolators are designed and developed in shear mounts that has the ability to absorb heat generated due to vibration which is equally essential for applications safety and smooth functioning. The rubber shear mounts are specially designed for shear and compression. They help releases tension during deflection on rubber, guaranteeing the performance of application. Further, they provide a higher degree of stiffness in the horizontal whist offering effective isolation vertically. These isolators are ideal for applications where lateral movement must be limited.
General application of rubber in shear mounts
Rubber mounting anti-vibrations are generally used in a variety of applications across different industry. The applications in which the rubber in shear mounts that are commonly used are HVAC Equipment, Gas and Generator Sets, Missile Component heavy equipment, machineries, compactors, and hammers for excavators, crushers and generators.
Selecting the right rubber in shear mounts
Selecting the right rubber in shear mount is critical for any application to work smoothly. You need to calculate the equipment weight to determine the maximum load that needs to be supported. Next you need to determine the machines RPM and accordingly work on the dynamics of natural frequency to figure out the desired isolation efficiency required. Further, you need to determine the static defection required by calculating the frequency of the disturbing vibration. Other than all this, you also need to determine the size and style of the rubber mounts required based on the space limitations and assembly considerations.