Dry Claw Vacuum Pumps – Elmo Rietschle C Series

Elmo Rietschle dry claw vacuum pumps provide efficient, reliable, and economical vacuum generation for industrial applications. Designed for dry operation, the C Series pumps eliminate the need for sealing fluids, offering a maintenance-friendly solution that delivers consistent performance. At PSI, we supply the full range of C-Series pumps to support a wide spectrum of industrial processes.

Overview of the C Series Dry Claw Vacuum Pumps

The C Series dry claw vacuum pumps operate on the principle of internal compression. Unlike traditional rotary lobe designs, internal compression allows these pumps to generate vacuum or compressed air without direct contact between rotors. This contact-free operation reduces wear and energy consumption, leading to considerable efficiency improvements over conventional systems.

The series includes C-VLR claw vacuum pumps and C-DLR claw compressors. These units achieve ultimate pressures of up to 50 mbar (abs.) in vacuum mode and up to 2.2 bar in compressed air mode. Additionally, combination pressure-vacuum models offer under-pressure up to –0.6 bar and overpressure up to +1.0 bar in a single stage, providing versatile solutions for complex applications.

Innovative Claw Technology

Elmo Rietschle’s patented claw technology sets the C Series apart. Each claw features an optimised, high-precision shape that rolls together without contact. A precision gear synchronises the rotors, ensuring smooth and reliable operation. Since compression is achieved dry and without friction, the pumps operate wear-free and process-safe.

Special seals separate the compression chamber from the gearbox, protecting critical components and extending service intervals. The rotors transport the medium efficiently by opening and closing inlet and outlet channels, ensuring reliable performance without the need for lubrication inside the compression chamber. Furthermore, the overhung rotor design on all sizes up to model 300 enhances efficiency and simplifies maintenance.

Key Advantages of the C Series Dry Claw Pumps

The C Series offers numerous benefits for industrial vacuum and compressed air applications. Firstly, high efficiency ensures energy savings during continuous operation. The dry, contact-free design eliminates wear, reduces maintenance requirements, and guarantees consistent performance over time.

Process reliability is another significant advantage. The pumps maintain stable vacuum or pressure levels, even in demanding environments. Cooling air can be discharged efficiently, and robust housings protect internal components from external impacts and harsh operating conditions.

Additional features include low sound levels, variable speed drives for energy optimisation, and patented triple lobe rotors that provide superior compression. Combined vacuum and pressure capabilities in a single stage simplify system design, while ATEX-compliant models support applications in potentially explosive atmospheres.

Technical Features

Elmo Rietschle C Series pumps deliver strong performance across a wide operating range:

• Volume flow rates: 60 to 1,000 m³/hr
• Ultimate vacuum: 60 mbar (abs.)
• Overpressure: Up to 2.2 bar
• Combination pressure-vacuum: –0.6 bar to +1.0 bar

These specifications make the C Series ideal for both small and large-scale vacuum and compressed air systems.

The C Series supports a diverse range of industrial sectors. In centralised vacuum systems, the pumps provide reliable pressure and vacuum for multiple process lines.

• Woodworking: Dry claw pumps are used in nesting, pick & place, and wood drying operations. They deliver stable vacuum to hold materials in place while improving efficiency and reducing energy consumption.
• Plastics: In EPS-foaming, pneumatic conveying, calibration, degassing extrudes, and thermoforming, dry claw pumps offer reliable, contact-free vacuum generation to improve product quality and process reliability.
• Medical: Hospitals and dental clinics benefit from central vacuum systems powered by dry claw pumps. These systems support dental suction, surgical procedures, and general vacuum applications while maintaining hygiene standards.
• General Industry: Dry claw vacuum pumps are used in sewage systems, canning lines, and other industrial processes that require robust and reliable vacuum generation.
• Food and Drink: Vacuum systems in milking, pneumatic conveying, pick & place operations, ham drying, and visceral evacuation rely on the C Series for efficient, clean, and safe vacuum generation.
• Packaging: Dry claw pumps support pick & place machines and forming systems by providing consistent vacuum levels for precise material handling and packaging efficiency.
• Electronics: In pick & place applications, the C Series provides reliable vacuum for positioning and transporting delicate components, improving production speed and accuracy.

PSI supplies genuine Elmo Rietschle C Series dry claw vacuum pumps, helping businesses across Ireland optimise industrial vacuum systems. Our team can guide you in selecting the correct pump for your specific application.

With high efficiency, dry contact-free operation, and versatile performance, the C Series pumps provide long-term reliability and reduced maintenance costs. They are a proven solution for industries ranging from woodworking and plastics to food processing, packaging, and medical applications.

By choosing Elmo Rietschle dry claw pumps from PSI, you gain access to world-class vacuum technology that combines energy savings, operational reliability, and superior performance for industrial applications.

Pneumatics & Sensors Ireland are official distributors in Ireland for all Elmo Rietschle products and components. We have in-depth knowledge of all Elmo Rietschle products and their applications, and can advise on any installation or replacement. To learn more, contact us today.

Downloads

• C Series Catalogue