7.5 kW CNC Machine Vacuum Pump

Detailed Product Review

The 7.5 KW CNC Machine Vacuum Pump, offered by Mermak CNC Technology Market, is an industrial-grade aerodynamic solution developed to optimize workpiece clamping processes in CNC router systems. This unit is designed to eliminate the time loss associated with traditional mechanical clamping methods (vises, clamps, screws), the risk of deformation on the workpiece surface, and vibrations that negatively affect machining accuracy. Its operating principle is based on modern side channel blower (or Vortex Blower) technology, which works by using a rotating impeller to push air outwards through centrifugal force, accelerating it along the channels to create a dynamic airflow. This process generates continuous and high-volume negative pressure (vacuum) on the suction side, while also providing airflow on the pressure side. The resulting vacuum force securely holds the material to be machined onto the CNC table with tons of force, ensuring millimeter-level machining accuracy and operational stability. It is particularly effective in furniture manufacturing, door production, and high-efficiency “Nesting” (waste-free cutting) applications, minimizing slippage and vibration by providing uniform clamping across the entire surface of the workpiece.

This vacuum unit stands out with its 100% oil-free operation, completely eliminating the oil-free smoke emissions, continuous oil change, and filter maintenance needs associated with oil-lubricated vane pumps. This structural feature guarantees that the internal mechanism of the system remains clean and operates for a long time, even in workshop environments with high concentrations of wood dust, chips, and other particles. The product’s material structure is designed to meet industrial durability standards, typically including a high-strength cast aluminum body, dynamically balanced impellers, and long-life bearings. For system integration, this 7.5 KW unit is compatible with standard industrial 3-Phase 380V AC, 50 Hz electrical grids and can be connected directly to CNC router vacuum tables or via an intermediate manifold system. Its IP55 protection class provides protection against dust ingress and water jets from all directions, ensuring reliable performance even in harsh industrial conditions. The S1 duty class capability indicates that the unit can operate continuously at full load without interruption, a critical feature for heavy-duty industrial applications requiring 24/7 production. These technical specifications reduce operational costs while ensuring maximum stability and longevity in production processes. Mermak, with 16 years of experience, supplies this product to international markets including the United Kingdom, United States, Canada, Australia, Ireland, and New Zealand, as well as similar countries and international markets.

Oil-Free and Maintenance-Free Operation Principle: The side channel blower technology of this vacuum pump, by its very nature, requires no lubrication. The air compression occurs in the gap between the rotating impeller blades and the housing, and since there is no friction or contact during this process, no lubricant is needed. This completely eliminates routine maintenance tasks such as periodic oil changes, oil filter maintenance, and oil level checks, reducing operational costs to zero. Furthermore, the absence of oil vapor or particle emissions minimizes the risk of product contamination, especially in applications requiring precision machining or where a clean working environment is critical, and improves workshop air quality.

High Suction Capacity and Precision Machining Optimization: With a 7.5 KW motor power, the approximate suction flow rate of 850 m³/h and a maximum vacuum pressure of -380 mbar ensure secure clamping of large surface area and various density materials onto the CNC table. This high suction power prevents slippage or vibration of materials during the processing of different materials such as MDF, particleboard, solid wood, plexiglass, PVC, and composite panels. In “Nesting” (waste-free cutting) applications, even small cut pieces remain fixed under vacuum, increasing cutting accuracy, reducing waste rates, and extending tool life. This allows for complex geometries and thin materials to be processed with exceptional precision…