ElmoRietschle-Logo-RGB-scaled.jpg

Reach Out to Us

Have questions or need more information? Choose one of the options below to contact us, request a service, or find a local distributor

Find the Right Claw Solution for Your Needs

Teaser-c-vlr 62-122

C-VLR: Claw Vacuum Pumps

Designed for dependable, oil-free operation, the C-VLR claw vacuum pumps from Elmo Rietschle offer high efficiency and quiet performance in a compact footprint. Utilizing advanced dry claw technology, these pumps deliver powerful vacuum generation with minimal wear and low maintenance requirements. The C-VLR series is ideal for modern manufacturing environments where clean, energy-efficient, and continuous operation is essential.

The DLR Compressors

ER-Product-Photo-Exterior-Claw_Compressor_C-DLR401

C-DLR: Claw Compressors

Engineered for reliability, efficiency, and oil-free operation, the C-DLR claw compressors deliver clean, contactless compression for a wide range of industrial applications. With their innovative dry-running design, these compressors ensure low maintenance and consistent performance, even in demanding environments. The C-DLR series combines robust construction with energy-efficient operation - making it a smart choice for businesses seeking high output with minimal downtime.

Claw Vacuum Pumps and Compressors

Our dry-running claw technology generates contact-free vacuum or compressed air efficiently and economically due to the principle of internal compression. This leads to considerable energy savings, reduced power consumption, and lower cost of ownership overall compared to the traditional rotary lobe design without internal compression.
The claws of the C-Series feature an optimized, high precision on shape-claws roll together without contact, synchronized by a precision gear set. The compression is contactless and oil-free. Special seals separate the compression chamber and gearbox.
The claw rotors control the transportation of the compressed gas by opening and closing the inlet and outlet channels. Thus no sealing fluid within the compression chamber is needed.
The overhung rotor design in all sizes up to model 300 is another outstanding feature of this technology. We hold the patent on the newly designed triple lobe rotors with medium air compression; for the first time, vacuum and pressure are being created in one stage, simultaneously.

Features

  • High efficiency
  • Contact-less oil-free operation
  • Air Cooled
  • Precision German designed
  • Variable speed drives available
  • Low sound level
  • Patented triple lobe rotors (pressure/vacuum version)
  • Pressure and vacuum combined in one compression stage

Performance & Technical Specifications: Dry Claw Vacuum Pumps and Compressors

With the C-VLR claw vacuum pumps and C-DLR claw compressors, the following ultimate pressures are attainable during continuous operation; vacuum up to 27 in. HgV for permanent operation and pressure up to 32 psig.

Claw Performance Overview Map

Innovating Industrial Efficiency

Quiet, efficient, and compact, our dry claw vacuum pumps and compressors satisfy demands from modern manufacturing environments: low noise level, high energy consumption efficiency and best use of available space. Ultimate vacuum pumps, designed for the following applications:

Applications

  • Food and Beverage
  • Packaging
  • Pharmaceutical Manufacturing
  • Medical and Laboratory Technology
  • Pneumatic Conveying Systems
  • Printing and Paper
  • Automotive and Transportation
  • Environmental Technology
  • Chemical Processing
  • Electronics and Semiconductors
  • Woodworking and Furniture Production

How it Works: Dry Claw Pumps

Much like rotary vane and rotary lobe pumps, the claw compressors and vacuum pumps of the C-Series are based on a static compression system. In contrast to rotary lobes, compression happens internally by volume reduction.
A claw pump consists of two rotors, which turn in opposite directions in a compressor housing without contact with very tight clearances. They are synchronized via a precision gear. As the claw moves over the suction connection and the axial suction channel inlet the gas is sucked into the compression/pumping chamber.
As the rotors revolve, the gas moves from the suction side to the pressure side. It is then compressed by the reduction of the volume between the rotors until the lower rotor uncovers the discharge channel. This “internal compression” leads to high differential pressures at efficiencies of more than 60 %.
Afterwards the pre-compressed gas is discharged via the pressure connection. To remove the heat generated by the compression process, cooling air is sucked in between the compression housing and a silencing cover before it leaves the pump.

Claw Operating Principle

Discover the Technology Behind the Quite Power

Get a closer look at how our C-Series dry claw vacuum pumps and compressors operate with precision and efficiency. This short video breaks down the internal compression process - showing how claw rotors, working without contact, deliver powerful performance with minimal noise and maximum evergy efficiency.