NACHI VDR-1B-1A2-U-22 High-Precision Variable Displacement Vane Pump for and Quiet Hydraulic Power in Industrial Systems

NACHI Vane Pump VDR-1B-1A2-U-22 — Professional Product Introduction

The NACHI VDR-1B-1A2-U-22 is a high-precision variable displacement vane pump developed to provide efficient, stable, and quiet hydraulic power for industrial systems. Designed by NACHI-FUJIKOSHI Corporation, this model belongs to the renowned VDR Series, a family of pressure-compensated vane pumps known for their outstanding energy efficiency and reliability in continuous operation.

The VDR-1B-1A2-U-22 combines intelligent hydraulic control with robust mechanical construction, making it an ideal choice for machine tools, plastic injection molding, press systems, and industrial automation machinery. It delivers precise pressure regulation and flow adjustment while minimizing energy loss and noise.

1. Product Overview

The VDR-1B-1A2-U-22 is designed for applications where consistent hydraulic pressure and minimal energy consumption are essential. This variable displacement pump automatically adjusts its output flow according to system pressure, maintaining constant pressure while avoiding unnecessary fluid circulation.

By reducing internal losses and oil heating, the VDR-1B-1A2-U-22 extends equipment life and reduces maintenance costs. The “U” in the model code designates universal mounting configuration, offering installation flexibility across multiple machine layouts.

2. Technical Specifications

3. Design and Construction Features

The VDR-1B-1A2-U-22 is built using NACHI’s advanced hydraulic engineering technology and precision manufacturing. The pump’s mechanical structure has been optimized for performance, durability, and low noise operation.

This design ensures long-term reliability and performance consistency, even in high-duty cycles and demanding environments.

4. Performance Characteristics

This high level of performance makes the VDR-1B-1A2-U-22 an ideal solution for equipment where stable and responsive hydraulic performance is required.

5. Functional Highlights

1. Automatic Pressure Compensation:
   The built-in compensator maintains a constant pressure level by adjusting displacement according to the hydraulic load, reducing energy loss and improving system efficiency.

2. Quiet Operation:
   NACHI’s optimized vane geometry and balanced rotor design minimize pulsation and mechanical noise, achieving quiet operation suitable for precision environments.

3. Energy Efficiency:
   The variable displacement feature significantly reduces power consumption compared to fixed-displacement pumps, especially during partial load operation.

4. Compact and Lightweight:
   With its compact form factor and light aluminum construction, the VDR-1B-1A2-U-22 can be easily integrated into tight machinery layouts.

5. Easy Maintenance:
   Modular construction allows quick replacement of key components such as vanes, seals, and cartridges, reducing downtime and maintenance costs.

6. Thermal Stability:
   Efficient internal flow design minimizes heat buildup, ensuring stable operation even under continuous-duty cycles.

6. Typical Applications

The VDR-1B-1A2-U-22 is widely used in hydraulic systems that require precise control, stable pressure, and high efficiency. Typical applications include:

Its flexibility and reliability make it a preferred choice across diverse industries.

7. Operating and Installation Guidelines

Adhering to these guidelines ensures long-term reliability and consistent pump performance.

8. Maintenance and Spare Parts

NACHI provides comprehensive service kits to simplify maintenance and extend the pump’s lifespan.

These parts ensure optimal hydraulic performance and compatibility with factory specifications.

9. Advantages over Conventional Pumps

This comparison highlights the energy and operational benefits of the VDR-1B-1A2-U-22 in modern hydraulic systems.

10. Summary

The NACHI VDR-1B-1A2-U-22 is an advanced, energy-efficient variable displacement vane pump that delivers smooth, quiet, and stable hydraulic performance. Its automatic pressure compensation, low noise operation, and robust construction make it an ideal choice for precision industrial systems.

Key Benefits:

• Energy-saving automatic flow control

• Quiet, vibration-free operation

• Compact design with universal mounting

• Long service life and easy maintenance

• Superior thermal and pressure stability

Combining cutting-edge design and proven NACHI reliability, the VDR-1B-1A2-U-22 sets a benchmark for performance and efficiency in hydraulic vane pumps for the next generation of industrial machinery.