Nachi P Series Pump | P16V, P31V | Variable Piston Pump for Injection Molding Machine

Nachi P Series Variable Piston Pump for Injection Molding Machines

Product Overview: The Nachi P series piston pumps, including P16V and P31V, are high-pressure variable pumps specifically engineered for injection molding machines and heavy-duty industrial presses. Renowned for superior volumetric efficiency and quiet operation at high pressures of 21-28 MPa, the P series significantly reduces energy consumption and oil temperature rise during injection cycles. Whether equipped with EP (Electro-Proportional Control) or CMC (Pressure Compensator), these pumps ensure peak repeatability and smooth operational control.

Key Technical Advantages:

• Optimized Injection Molding Controls (EP/CMC):

  • The P31VR-20-EP model utilizes electro-proportional pressure control for seamless integration with machine controllers, enabling real-time, stepless adjustment of pressure and flow.

  • The P16VMR-10-C-CMC features high-efficiency pressure compensation, de-stroking automatically during pressure-holding phases to slash power loss.

• Ultra-Quiet Performance: Utilizing Nachi’s patented noise-reduction housing and decompression porting, these pumps maintain whisper-quiet decibel levels even under full-load high-pressure conditions, improving the workshop environment.

• Extended Service Life & Contamination Resistance: Built for 24/7 continuous industrial duty cycles. Reinforced bearings and premium seals withstand high oil temperatures and fine particulates, ensuring long-term stability in harsh environments.

• High Responsiveness & Precision: Optimized internal kinematics allow for millisecond-level displacement switching—the core power required to boost production cycles and ensure consistent molding quality.

Detailed Models & Parameters:

• Core Series: Nachi P Series (P16V, P22V, P31V, P46V).

• Representative Models: P16VMR-10-C-CMC-20-S121-J, P16V-RS-11-CCG-10-J, P31VR-20-EP-D-C7-21.

• Displacements: 16.4 cm³/rev (P16), 31.1 cm³/rev (P31).

• Pressure Ratings: Rated at 21 MPa (3045 PSI); Peak cycles up to 28 MPa (4060 PSI).

• Rotation: R (Clockwise) / L (Counter-clockwise).