Daikin Type VDR Double Variable Vane Pump | VDR-11B, VDR-1B | 14MPa

Daikin Type VDR Series High-Pressure Double Variable Vane Pumps

Product Overview: The VDR Series is a high-end hydraulic power unit integrating two independent variable displacement vane pumps onto a single drive shaft. Engineered as an advanced Pressure Compensated unit, it provides “Oil on Demand” for complex dual-circuit systems (such as spindle clamping and auxiliary positioning in machine tools), significantly reducing power consumption and controlling oil temperature. This range features the precision models: VDR-11B-1A3-1A3-U-6117C, VDR-11B-1A3-1A3-U-6117B, VDR-1B-2A3-22, and VDR-1B-2A2-22. Utilizing Daikin’s proprietary eccentric adjustment mechanism, the VDR series delivers millisecond-level response and whisper-quiet operation at continuous pressures up to 14.0 MPa (140 Bar).

Key Technical Advantages:

• Independent Dual-Circuit Regulation: Each pump core can be independently set with different compensation pressures and displacements, enabling high-low pressure switching or simultaneous independent control from a single motor.

• Significant Energy Savings: Once the system reaches the preset pressure, the pump automatically shifts to zero-flow compensation. Compared to fixed pumps, it reduces energy waste by 30%-50% and minimizes the need for coolers.

• High Dynamic Response: The specially treated eccentric ring design ensures extremely short response times for flow adjustment, maximizing cycle efficiency for precision CNC machinery.

• Ultra-Compact Structure: The double pump architecture saves significant installation space and plumbing costs, ideal for embedded hydraulic systems.

• Target Applications: CNC machining centers, grinding machine fixtures, woodworking machinery, broaching machines, and automated assembly lines.

Detailed Models & Parameters:

• Core Series: Daikin Type VDR Series (Double Variable Displacement).

• Model Keywords: VDR-11B-1A3-1A3-U-6117C, VDR-11B-1A3-1A3-U-6117B, VDR-1B-2A3-22, VDR-1B-2A2-22.

• Technical Specs Decoding:

  • VDR-11B: Double pump Frame Size 1 identifier.

  • 1A3 / 2A3: Specific pressure adjustment range codes (e.g., 3.5-7.0 MPa or higher classes).

  • U / 22: Mounting bracket style and design sequence identifier.

  • 6117B/C: Custom client-specific codes or enhanced seal configurations.

• Max Operating Pressure: Rated continuous pressure up to 14.0 MPa (140 Bar).

• Speed Range: Supports continuous operation between 1000 and 1800 RPM.