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Claw Vacuum Pumps and Compressors

C-Series - Dry running, contact free vacuum and compressor air for industrial applications

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 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. Gas tight versions with reduced leakage rates are available. 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

Product Overview: Claw Vacuum Pumps

C-VLR Claw Vacuum Pumps

Capacities ranging from 42 to 353 cfm and maximum continuous vacuum up to 27 in. HgV. Highly efficient, oil-less and contact free operation. Excellent pumping capacities throughout the entire vacuum range.

Integrated air-cooling without the need for water cooling. Available with optional variable speed drive and low maintenance; wide range of applications.

C-DLR Claw Compressors

Capacities ranging from 42 to 353 cfm; maximum pressure in continuous operation up to 32 psig. Highly efficient, oil-less and contact free operation. Excellent pumping capacities throughout the entire vacuum range.

Integrated air-cooling without the need for water cooling. Available with optional variable speed drive and low maintenance; wide range of applications.

C-KLR Claw Combination Pressure Vacuum Pumps

Capacities ranging from 57 to 82 cfm, vacuum up to 18 in, HgV and pressure up to 10 psig. Highly efficient, oil-less and contact free operation.

Vacuum and pressure operating points are virtually independent of each other with excellent flow capabilities. Integrated air-cooling without the need for water cooling. Integrated after cooler for low temperature compressed air delivery. Low maintenance; wide range of applications.

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.

Applications

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:

Woodworking
Plastic
Medical
Packaging
Food & Beverage
Central Vacuum Systems
Electronics

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 (1 and 2), which turn in opposite directions in a compressor housing (7) without contact with very tight clearances. They are synchronized via a precision gear. As the claw moves over the suction connection (3) and the axial suction channel inlet (4) 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 (5). 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 (6). To remove the heat generated by the compression process, cooling air is sucked in between the compression housing (7) and a silencing cover (8) before it leaves the pump