What is an Anti-Vibration Mount and How Does it Work?

Anti-vibration mounts, also known as, AV mounts, are devices used to absorb vibrations and shocks generated by machinery and equipment. They act as isolators between the machine and its surroundings, thereby reducing the transmission of vibrations and noise.

 

Purpose: AV mounts are made from materials like rubber, neoprene, or other elastomers. They are designed to absorb and isolate vibrations generated by machinery, reducing noise and wear and tear on equipment and surrounding structures.

 

Benefits of Anti-Vibration Mounts:

 

• Reduced equipment damage and extended lifespan
• Minimized noise pollution
• Enhanced performance of precision equipment
• Improved safety conditions

 

Here’s a breakdown of their key functions:

 

• Reduced vibration and noise: By absorbing vibrations, AV mounts minimize the noise generated by machinery, creating a quieter work environment and potentially reducing noise pollution.
• Protect equipment: Vibrations can cause wear and tear on machinery over time. AV mounts help to extend the lifespan of equipment by reducing the impact of these vibrations.
• Improved performance: Excessive vibrations can affect the performance of delicate equipment. AV mounts can help improve such equipment’s accuracy and efficiency by minimizing vibrations.

 

Common applications of anti-vibration mounts include:

 

• HVAC systems: Isolating fans, compressors, and other components to reduce noise transmission.
• Appliance manufacturing: Dampening vibrations in washing machines, dryers, and refrigerators.
• Automotive industry: Isolating engines and motors to reduce noise and vibration in vehicles.
• Construction equipment: Minimizing vibrations from generators, pumps, and other machinery.
• Electronics manufacturing: Protecting sensitive electronic components from vibrations.

 

Types of anti-vibration mounts:

 

There are various types of AV mounts available, each designed for specific applications and load capacities. Some common types include:

 

• Rubber mounts: These are the most common type and are made from natural or synthetic rubber, which is effective at absorbing vibrations.
• Metal spring mounts: These mounts use metal springs to isolate vibrations and are often used in applications with high shock loads.
• Air spring mounts: These mounts use compressed air to isolate vibrations and are well-suited for applications requiring a high degree of isolation.
• Simple Mounts: Cylindrical or rectangular rubber blocks, good for basic vibration isolation.
• Flanged Mounts: Include flanges for bolting equipment down, ensuring stability.
• Captive Mounts: Feature interlocking metal parts to withstand high shock loads and limit movement.
• Leveling Mounts: Include adjustable feet for precise equipment leveling during installation.

 

Choosing the right type of anti-vibration mount depends on several factors, such as the weight of the equipment, the frequency of the vibrations, and the desired level of isolation.

How to Choose the Right Anti-Vibration Mount for Your Needs?

 

Key Factors in Selecting AV Mounts

 

1. Determine Equipment Specifications

 

• Weight: Accurately measure the total weight of the equipment or machinery you want to isolate.
• Weight Distribution: Identify how the weight is distributed (evenly, unevenly). This affects the placement and type of mounts needed.
• Dimensions: Knowing the dimensions of your equipment will help determine the appropriate size and number of mounts.
• Operating Environment: Consider factors like temperature, moisture, and chemical exposure that might affect the lifespan and effectiveness of the mount’s material.

 

1. Identify Vibration Characteristics

 

• Vibration Frequency: Determine the range of frequencies (usually in RPM) generated by the equipment. This is crucial for selecting mounts with the correct natural frequency to counteract disruptive vibrations.
• Vibration Type: Understand the nature of the vibrations (e.g., rotational, linear, or a combination).

• Calculate Required Load Capacity

 

• Divide the total equipment weight by the number of mounts you plan to use. This gives you the load capacity needed for each mount. Always allow some safety margin in your calculations.

 

1. Desired Level of Isolation

 

• Decide how much vibration reduction you need. Mounts are rated based on their isolation efficiency. Choose an anti-vibration mount with an appropriate isolation level for your specific requirements.

 

1. Static Deflection:

• This measure indicates how much the mount will compress under load. Select mounts with a static deflection that aligns with your desired level of isolation and ensures the stability of the equipment.

• Mounting Considerations

 

• Space: Evaluate the physical space available for mounts.
• Installation: Decide if bolting, threading, or another mounting method is required and how this will be accommodated.

 

Additional Factors to Remember

 

• Manufacturer’s recommendations: Always consult the equipment manufacturer for any specific anti-vibration mount recommendations.
• Consulting service: For complex scenarios, it might be beneficial to consult with a vibration control specialist or the mount manufacturer.
• Cost / Durability: Find a balance between the cost of the mounts and their ability to provide you with the level of isolation and lifespan you need.

Anti-Vibration Mounts: Frequently Asked Questions 

How do I install AV mounts?

Installation procedures may vary depending on the type of anti-vibration mount and the specific application. However, general guidelines include ensuring proper alignment, securely attaching the mounts to the equipment or structure, and following manufacturer recommendations for installation and maintenance.

 

Can anti-vibration mounts eliminate all vibrations?

While AV mounts are effective at reducing vibrations, it’s essential to understand that they may not eliminate all vibrations entirely, especially in high-intensity or extreme conditions. Proper selection, installation, and maintenance are crucial for achieving the desired level of vibration isolation.

 

Do AV mounts require maintenance?

Yes, regular maintenance is recommended to ensure the optimal performance and longevity of AV mounts. This may include periodic inspections, cleaning, and replacement of worn or damaged mounts.

 

Where can I purchase anti-vibration mounts?

AV mounts are available from various suppliers, including industrial equipment distributors, online retailers, and specialized manufacturers. Be sure to choose reputable suppliers that offer high-quality products suitable for your specific application.

 

Can anti-vibration mounts be customized for unique applications?

Yes, many manufacturers offer customization services to tailor AV mounts to specific requirements. This can include designing mounts with particular load capacities, dimensions, or material properties to suit the application’s needs accurately.