NACHI precision machine tool high pressure quantitative vane pump
NACHI High-Pressure Fixed-Displacement Vane Pump for Precision Machine Tools
Overview
As a leading giant in the Japanese industrial sector, NACHI specializes in precision machinery manufacturing. The high-pressure fixed-displacement vane pump for precision machine tools is one of its flagship hydraulic products, renowned for high precision, low noise, long service life and stable performance. This series of pumps is specifically engineered to convert mechanical energy into hydraulic energy efficiently, providing a reliable hydraulic power source for precision machine tools that require strict control of pressure and flow. With advanced vane technology and robust structural design, it can operate stably in high-pressure environments, ensuring the accuracy and efficiency of machining processes.
Core Features
- Stable High-Pressure Operation: The pump adopts an innovative pressure control and pressure balance mechanism, combined with an original 3-point ring support system, enabling it to operate efficiently and stably under high pressure. The typical pressure range is 7-21 MPa, and some models can reach a peak pressure of 3000 psi, fully meeting the high-pressure requirements of precision machine tool hydraulic systems.
- Low Noise & Low Vibration: Optimized structural design and precise component matching effectively reduce noise and vibration during operation. The quiet working performance not only reduces overall equipment noise pollution but also improves the comfort of the operating environment.
- High Efficiency & Energy Saving: The pump features high volumetric efficiency and mechanical efficiency. Especially for the VDC series, it adopts IE4 energy efficiency standard, which can save energy by 18% compared with traditional products. The efficient design reduces power loss, lowers operating costs, and meets the requirements of energy conservation and environmental protection.
- Precise Control Performance: With high-precision instantaneous responsiveness and stable displacement output, the pump can accurately control the flow and pressure of the hydraulic system, ensuring the precision of machine tool movements such as feeding and cutting. It is particularly suitable for occasions that require accurate start-stop and load change control.
- Robust Construction & Easy Maintenance: Made of high-quality materials, the pump has strong durability and can withstand harsh working environments. The simple and compact structure facilitates installation and integration into various hydraulic systems. Meanwhile, the design of easy-to-access components simplifies maintenance work, reducing downtime.
Working Principle
The NACHI high-pressure fixed-displacement vane pump is mainly composed of rotor, stator, vanes, port plate and end cover. The inner surface of the stator is a cylindrical hole, and there is an eccentricity between the rotor and the stator. When the pump works, the vanes can slide flexibly in the rotor slots. Under the action of centrifugal force during rotor rotation and the pressure oil introduced into the root of the vanes, the top of the vanes is closely attached to the inner surface of the stator.
This forms a number of sealed working chambers between two adjacent vanes, the port plate, the stator and the rotor. When the rotor rotates counterclockwise, the volume of the sealed working chamber gradually increases at the suction port, creating a vacuum, and the oil is sucked in through the suction port and the window on the port plate. As the rotor continues to rotate, the volume of the working chamber gradually decreases, compressing the oil, and the pressure oil is discharged through the window on the port plate and the discharge port, thus realizing the conversion of mechanical energy to hydraulic energy and the continuous delivery of pressure oil.
Technical Specifications
| Parameter | VDC Series (High-Performance Type) | VDR Series (Economical Type) |
|---|---|---|
| Pressure Range | 7-21 MPa (290-3000 psi) | 7-14 MPa |
| Flow Range | 5-100 L/min | 5-50 L/min |
| Maximum Speed | 1800 rpm | 1800 rpm |
| Displacement | Up to 65 cc | Customizable according to model |
| Control Mode | Electro-proportional control (supports CANopen communication) | Mechanical pressure regulation |
| Mounting Method | Flange mounting (SAE C 2-Bolt optional) | Flange mounting |
| Oil Cleanliness Tolerance | NAS 10 level (with built-in magnetic filter) | NAS 10 level |
Applications
This high-pressure fixed-displacement vane pump is widely used in the hydraulic systems of precision machine tools, including grinders, milling machines, lathes and other equipment that require high-precision machining. It provides stable and reliable hydraulic power for key links such as feed drive, spindle drive and tool change of machine tools, ensuring the machining accuracy and surface quality of workpieces.
In addition to precision machine tools, it can also be applied to automation production lines (such as robot joint drives, assembly lines), plastic processing machinery (extruders, blow molding machines), metal rolling equipment (rolling mills, punch presses) and test bench hydraulic power sources, demonstrating excellent adaptability in various industrial fields.
Quality & Service
NACHI adheres to strict quality control standards in the production process of high-pressure fixed-displacement vane pumps, and each product has undergone rigorous testing before leaving the factory to ensure stable and reliable performance. The product provides a one-year warranty period, and the after-sales team provides professional technical support and maintenance services to solve various problems encountered by customers in the process of use.
