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Dry Claw Vacuum Pumps

Oil-free dry claw vacuum pumps for reliable industrial vacuum generation, combining compact design, low maintenance and efficient operation for applications requiring clean, contact-free vacuum technology.
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Introduction

Atcorp offers dry claw vacuum pump solutions for applications where clean, oil-free vacuum generation and dependable continuous operation are important. Dry, contact-free claw technology eliminates the need for lubrication in the pumping chamber, while air cooling and a compact construction simplify installation and ongoing operation. The referenced range covers pumping capacities from approximately 62 to 600 m³/h.

Key Benefits

Oil-Free Operation
Compact Design
Low Maintenance
Air-Cooled Operation
Low Noise
Reliable Performance

Why Choose Dry Claw Vacuum Pumps?

When a process requires clean vacuum without oil contamination, dry claw technology offers a practical alternative to oil-lubricated vacuum pumps. Atcorp provides dry claw vacuum solutions that combine oil-free operation, compact construction and reliable pumping performance for industrial applications where low maintenance and clean vacuum are important.
Specification Details
Pump Technology Dry Claw
Operation Dry & Contact-Free
Lubrication Oil-Free Pumping Chamber
Pumping Capacity Approx. 62–600 m³/h
Continuous Vacuum Approx. 100–150 mbar(a), model dependent
Cooling Integrated Air Cooling
Drive Electric Motor
Variable Speed VFD Option Available
Maintenance Low Maintenance
Installation Standalone / Vacuum System Integration
Application Industrial Vacuum Generation

A dry claw vacuum pump generates vacuum by rotating two non-contacting claw-shaped rotors inside a precision-machined chamber.

 

Step 1 – Gas Entry
Process gas enters the pump through the suction inlet.

 

Step 2 – Rotor Rotation
Two claw-shaped rotors rotate in opposite directions without touching each other or the pump chamber.

 

Step 3 – Gas Trapping
The rotating claws capture and transport defined volumes of gas.

 

Step 4 – Gas Compression
The trapped gas is progressively moved toward the discharge side.

 

Step 5 – Gas Discharge
Compressed gas exits through the discharge outlet.

 

Step 6 – Continuous Vacuum
Continuous rotor movement maintains vacuum at the process inlet.

 

Because the rotors operate without contact and the pumping chamber does not require oil or sealing fluid, the process gas remains free from pumping-fluid contamination.

100% Dry Operation

The pumping chamber operates without oil or sealing fluids, making the technology suitable for applications where clean vacuum is essential.

 

Contact-Free Pumping

Non-contacting rotor operation reduces internal wear and supports long-term reliable performance.

 

High-Efficiency Design

The compact claw configuration provides efficient gas movement while maintaining a small equipment footprint.

 

Low Maintenance

The absence of contact between the primary pumping components helps reduce routine wear-related maintenance.

 

Air-Cooled Construction

Integrated air cooling eliminates the requirement for external cooling fluids in the standard configuration.

 

Low Noise Operation

The pump is designed to provide reliable vacuum generation with comparatively low operating noise.

 

Variable-Speed Operation

VFD availability allows pump speed to be adjusted according to changing process requirements.

 

System Integration

Dry claw pumps can be incorporated into customized vacuum systems alongside other process equipment.

Dry claw vacuum pumps can be configured for different industrial requirements and integrated into complete vacuum systems.

Available Options

  • Variable Frequency Drive
  • Electrical control panel
  • Vacuum gauge
  • Vacuum transmitter
  • Inlet filtration
  • Isolation valve
  • Non-return valve
  • Condenser and receiver
  • Process vapour management
  • Skid-mounted configuration


The final configuration should be selected according to required vacuum level, pumping speed, process gas composition, temperature and operating conditions.

Industrial Applications

Dry claw vacuum pumps are suitable for industrial applications where clean, oil-free vacuum and reliable continuous operation are required.
Food & Beverage
Provides clean vacuum generation for suitable processing, packaging and handling applications.
Pharmaceutical Industry
Supports vacuum processes where oil-free operation and process cleanliness are important.
Chemical Processing
Suitable for applications requiring dry vacuum and reliable gas handling.
Plastics & Packaging
Supports vacuum requirements in forming, handling and packaging equipment.
Vacuum Conveying
Provides reliable vacuum for material transportation and handling systems.

Frequently Asked Questions

Find answers about dry claw vacuum pumps, including oil-free operation, working principles, maintenance, cooling, capacity and industrial applications.
A dry claw vacuum pump is a positive-displacement vacuum pump that uses two non-contacting claw-shaped rotors to move and compress gas without oil or sealing fluid in the pumping chamber.
Yes. The pumping process is dry and contact-free, with no oil or other sealing fluid required inside the vacuum chamber.
The referenced dry claw range covers approximately 62 to 600 m³/h, depending on the selected model.
The referenced models maintain continuous vacuum in approximately the 100–150 mbar(a) range, depending on the model and operating conditions.
A dry claw pump operates without oil or sealing fluid in the pumping chamber and uses non-contacting rotors. A rotary vane pump uses oil for lubrication and sealing. Dry claw technology is therefore particularly attractive where oil-free vacuum is required
The referenced range incorporates a built-in air cooling system, eliminating the need for external cooling fluids in the standard design.
Yes. Their contact-free pumping principle, low-maintenance design and stable performance make them suitable for continuous industrial applications when correctly selected and operated.
Yes. Variable frequency drive options are available, allowing pump speed to be adjusted according to process demand and helping optimize energy consumption.
Yes. Dry claw vacuum pumps can be incorporated into customized vacuum systems with filtration, valves, condensers, instrumentation, controls and other application-specific components.
Yes. Atcorp can help Indian industrial customers evaluate required pumping speed, operating vacuum, process conditions and installation requirements to identify and supply a suitable dry claw vacuum solution.

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