Nachi Vane Pump VDS-0B-1A3-10: Model Explanation & Technical Parameters

1. Model Explanation

• VDS: Series Identifier, representing Nachi’s compact variable vane pump series. This series inherits the performance advantages of the original VDR series, featuring high efficiency, low noise and compact structure, with minimal power loss especially at full cutoff.
• 0: Pump Size, indicating the basic size specification of the pump, which determines the overall structure and installation dimensions of the pump.
• B: Mounting Method, standing for flange type mounting. This mounting method is designed for hydraulic system layouts that require stable and firm connections, providing better load-bearing capacity and installation stability compared to foot type mounting, and is a standard mounting option for VDS series pumps with size 0.
• 1: Ring Size, corresponding to a no-load flow rate of 3.94 gpm when the pump operates at 1800 min⁻¹, which is a fixed ring size specification for this model variant.
• A: Flow Rate Characteristics, representing the constant discharge type, ensuring stable flow output during the pump’s operation and adapting to most hydraulic system requirements.
• 3: Pressure Adjustment Range, indicating the adjustable pressure range of the pump is 435 to 1015 psi (equivalent to 3-7 MPa), which belongs to the third level of pressure adjustment range for VDS series pumps and is suitable for high-pressure working conditions[1][2]. The factory-set maximum pressure for this level is 7.0 MPa (71.4 kgf/cm²).
• 10: Design Number, representing the specific design version of the pump, which is related to the internal structure, sealing type and other detailed configurations, consistent with the standard design of VDS series pumps.

2. Technical Parameters

3. Key Features

• High Efficiency: Precise machining minimizes power loss, especially during full cutoff operation, ensuring efficient energy utilization, which inherits the performance advantages of the VDR series.
• Quiet Operation: Equipped with journal bearings and optimized suction/discharge port configurations, reducing operating noise and vibration even in the high-pressure range (up to 1015 psi/7 MPa).
• Compact & Simple Design: Economical and easy to handle, suitable for a wide range of hydraulic systems, and the flange type mounting enhances installation stability, meeting the demand for firm connections in hydraulic layouts.
• Precise Performance: Prompt on-off response ensures instantaneous, stable and high-precision operation, meeting the requirements of high-pressure working conditions corresponding to the 435-1015 psi (3-7 MPa) pressure range. The factory-set maximum pressure is 7.0 MPa, ensuring stable operation under high-pressure loads.
• Durable Construction: High-quality materials and exquisite craftsmanship ensure excellent durability and long service life, consistent with the robust structural design of Nachi VDS series pumps, and it is specially optimized for high-pressure working conditions.