Claw Vacuum Pumps For Efficient Performance

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Claw vacuum pumps in the NDC Series feature a compact, energy-efficient design that makes them a reliable and sustainable choice for various industrial applications. Harsh-duty versions are available with a protective coating, inlet filter, condensate drain in silencer, and flushing capabilities, among other standard features. Dry claw vacuum pumps operate in a dry, non-contacting manner due to extremely tight machining tolerances. As a result, no lubricant or sealant is required, friction is minimized, and required maintenance is minimal.

Claw Vacuum Pumps | NDC Series

Nash specializes in dry claw vacuum technology and provides a wide range of dry vacuum pumps packaged as bare pumps, pre-engineered or engineered-to-order systems. Engineered-to-order systems are custom-designed to meet customer process requirements. Pre-engineered packages are available for quick shipment with plug & play installation. Claw vacuum pumps offer significant process and economic benefits. Dry technology provides lower installation expenses, easier maintenance, low running costs, and reduced environmental impact while providing a more flexible vacuum. 

Advantages of Dry Claw Vacuum Technology

Dry claw vacuum pumps offer significant advantages for industrial applications. With a robust and durable design and low maintenance requirements, claw pumps are engineered for high performance in tough environments. Other advantages include:

  • Quiet Operation 
  • Low Maintenance and Cost of Ownership
  • Energy-Efficient
  • Variable Speed Drive (VSD) Compatible
  • Passive and Active Cooling Options
  • Reduced Footprint



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Claw Vacuum Pump, NDC Series, Nash Vacuum Pumps
Nash Dry Claw (NDC) Series

Applications and Industries

Applications for Claw Vacuum Pumps

Vacuum technology is required in many applications - plastic extrusion, drying, bottling, packaging, and within central hospital systems worldwide. Claw pumps are offered in a wide range of standard sizes and can be engineered to order for specific applications and considerations. Dry claw vacuum pumps are sometimes used in tandem with booster pumps but can be used alone when high vacuum or slower pump-down rates are allowed.

Claw vacuum pumps are the preferred vacuum technology in thermoforming, milking parlors, water and sewage handling, pick and place, water drying, medical systems, and paper converting.

Dry Claw Vacuum Rotors
Claw Vacuum Pump Rotors

Frequently Asked Questions

What Is A Dry Claw Vacuum Pump?

A dry claw vacuum pump is a type of vacuum pump that operates without the need for lubricating oil in the compression chamber. It uses claw-shaped rotors to create a vacuum by trapping and compressing air or gas. This design eliminates the risk of oil or contamination in the evacuated space, making it suitable for applications where oil-free operation is essential, such as industries like electronics or food processing. 

How Claw Vacuum Pumps Work?

Inside dry claw vacuum pumps, two claw-shaped rotors turn in opposite directions inside the cylinder wall. These rotors operate without the aid of a sealing fluid and in a non-contacting manner due to the tight machining tolerances and their unique claw shape. As the claw-shaped rotors move, they expand a volume of air at the inlet of the pump, carrying that volume around the outside of the pumping chamber, and then compressing that volume out of the exhaust. The shape of the claw maximizes transport volume per cycle while effectively timing the opening and closing of the suction and exhaust channels against the expansion and contraction of that volume.

Are Dry Claw Vacuum Pumps More Environmentally Friendly?

Claw vacuum pumps are considered a more environmentally friendly and sustainable option compared to other vacuum pump models. By eliminating the use of oil, it reduces the potential for oil emissions and contamination. 

What Maintenance Is Required For Claw Pumps?

One of the benefits of claw pump technology is reduced maintenance. Maintenance and downtime are significantly reduced compared to oil-lubricated pumps. Regular checks of seals and claws, along with periodic inspections, are recommended maintenance tasks for claw vacuum pumps. 

How Do I Choose The Right Dry Claw Vacuum Pump?

Choosing the right dry claw vacuum pump involves consideration of various factors to ensure it meets the requirements of your application. Consider your unique application requirements, operating conditions, and the pump size and capacity that is required. 

 

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The Nash Difference

Nash offers unparalleled expertise in the design and manufacturing of vacuum pump systems. The NDC Series of claw pumps are available as a bare pump or as an incorporated component in a custom-engineered vacuum solution package suited for your unique process requirements. Offering a wide portfolio of bare pumps and custom engineered-to-order systems, you can count on Nash to provide a reliable and efficient vacuum system engineered for any demand of tough industrial applications. Find the right solution for your application needs by contacting Nash today.

Nash Vacuum Pumps are part of Ingersoll Rand Industrial Technologies Business and Provide Full Scale Vacuum Pumps and Systems for a Variety of Industrial and General Applications