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VDC-3A-1A4, VDC-3B-1A4 Vane pump
VDC Series:VDC-1A/B; VDC-2A/B; VDC-3A/B
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Description
Nachi Vane Pump VDC-3A-1A4 & VDC-3B-1A4 Specifications
Nachi VDC-3A-1A4 and VDC-3B-1A4 are ultra-high pressure variable displacement vane pumps designed for industrial hydraulic systems, featuring stable performance, low noise, and high efficiency. This document provides detailed technical parameters, model interpretation, and key features to help users quickly understand and select the product. Suitable for machinery, automation, engineering equipment, and other fields requiring reliable hydraulic power with ultra-high pressure demand.
Model Interpretation
The model codes of Nachi VDC series vane pumps have clear meanings, helping to identify product specifications quickly:
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VDC: Series name, representing Nachi high-pressure variable displacement vane pump.
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3: Pump size, indicating the basic structural size of the pump (larger than the VDC-2 series).
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A/B: Mounting method (A: Foot type mounting; B: Flange mounting optional).
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1: Ring size, corresponding to the matching size of the pump ring.
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A: Flow characteristics, meaning constant discharge type for stable flow output.
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4: Pressure adjustment range, corresponding to the ultra-high pressure regulation specification for the VDC-3 series (higher than the “3” suffix model, with larger pressure range and higher peak pressure).
Detailed Technical Parameters
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Parameter Item
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Nachi VDC-3A-1A4
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Nachi VDC-3B-1A4
|
|
Displacement (in³/rev)
|
3.1
|
3.1
|
|
No-Load Discharge Rate (gpm) @ 1500 min⁻¹
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20.6
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20.6
|
|
No-Load Discharge Rate (gpm) @ 1800 min⁻¹
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24.7
|
24.7
|
|
Pressure Adjustment Range (psi)
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290 – 1800
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290 – 1800
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|
Pressure Adjustment Range (kgf/cm²)
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20.4 – 128.6
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20.4 – 128.6
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|
Allowable Peak Pressure (psi)
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3000
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3000
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Allowable Peak Pressure (kgf/cm²)
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214.3
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214.3
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Shaft Speed Range (min⁻¹)
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800 – 1800
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800 – 1800
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Weight (lbs)
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70
|
70
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Weight (kg)
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31.8
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31.8
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Mounting Method
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Foot type mounting (Sub plate type, sub plate not included)
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Flange mounting optional
|
|
Flow Characteristics
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Constant discharge type
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Constant discharge type
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|
Design Number
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20
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20
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Rotation Direction
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Right from shaft end
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Right from shaft end
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Material
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High-strength cast iron (reinforced for ultra-high pressure resistance)
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High-strength cast iron (reinforced for ultra-high pressure resistance)
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Key Features
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Ultra-High Pressure Performance: Withstand peak pressure up to 3000 psi (214.3 kgf/cm²), and adjustable pressure range of 290-1800 psi, suitable for ultra-high pressure hydraulic systems requiring stable and continuous pressure output.
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Stable Operation: Adopts 3-point ring support system and upgraded pressure control mechanism, ensuring stable discharge rate even in ultra-high pressure range, effectively reducing pressure fluctuations and ensuring system stability.
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Low Vibration & Noise: Advanced structural optimization and noise reduction design minimize vibration and noise, providing a quiet operation environment, suitable for precision machinery, indoor equipment and high-demand working scenarios.
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Easy Maintenance: Pressure and discharge rate adjusting mechanisms are located on the same side, simplifying maintenance and handling, reducing equipment downtime and improving work efficiency.
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High Efficiency & Durability: Innovative mechanical design reduces power loss, improving overall system efficiency and energy saving; high-strength reinforced cast iron material enhances wear resistance and pressure resistance, ensuring long service life under ultra-high pressure working conditions.
Application Scope
Nachi VDC-3A-1A4 and VDC-3B-1A4 vane pumps are widely used in various industrial fields requiring ultra-high pressure hydraulic power, including heavy-duty hydraulic presses, large-scale injection molding machines, engineering construction machinery, high-precision automated production lines, and ultra-high pressure precision hydraulic systems. With stable displacement, ultra-high pressure adjustment range and peak pressure, they are an ideal choice for medium and ultra-high pressure hydraulic systems with strict requirements on pressure stability, durability and efficiency.
Note
1. The parameters are standard values; actual performance may vary slightly according to the working environment and medium used.
2. It is recommended to use hydraulic oil that meets Nachi’s ultra-high pressure specifications to ensure the service life and performance of the pump, avoiding damage caused by inappropriate oil quality or viscosity.
3. For more detailed installation and maintenance guidelines, please refer to the official Nachi VDC series product manual.
VDC series Nachi vane pump
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