Series Identification: The Nachi PVD Series is a family of variable axial piston pumps. These pumps are designed to offer flexibility in hydraulic systems by allowing for variable displacement and flow control.
Typical Applications: They are widely used in various industrial and mobile hydraulic applications such as in construction machinery (like excavators), material handling equipment (forklifts), and manufacturing machinery (presses and injection - molding machines) where precise control of hydraulic power is essential.
Performance Specifications
Flow Capacity
Flow Rate Range: The PVD Series pumps have a variable flow rate. The minimum flow rate can be adjusted close to zero (depending on the control mechanism and displacement setting), and the maximum flow rate varies by model. For example, some models might have a maximum flow rate in the range of 100 - 500 liters per minute (L/min), which is determined by factors such as pump speed, piston displacement, and operating pressure.
Flow Rate Adjustability: The pumps are designed for precise flow rate adjustment. The displacement can be controlled through various means such as electro - hydraulic control valves or mechanical actuators. The adjustment range allows for a wide range of flow rates to meet different operational requirements, usually with a high degree of accuracy (e.g., within a few percent of the set value).
Pressure Specifications
Rated Pressure: These pumps have a rated working pressure that is typically in the range of 200 - 300 bars (2900 - 4350 psi). This is the pressure at which the pump is designed to operate continuously without significant damage or performance degradation.
Peak Pressure Capacity: In addition to the rated pressure, they also have a peak pressure capacity. The peak pressure, which the pump can withstand for short - term spikes, is usually higher than the rated pressure. It can be around 350 - 400 bars (5075 - 5800 psi), depending on the specific model and design.
Speed Characteristics
Operating Speed Range: The PVD Series pumps have an operating speed range measured in revolutions per minute (rpm). The minimum operating speed is usually around 600 - 1000 rpm to ensure proper lubrication and functionality of the internal components. The maximum speed can reach up to 3000 - 3500 rpm, depending on the model and the specific application requirements.
