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VDR-2A-1A5-13 NACHI Variable vane pump
VDR Series: VDR-1A、VDR-2A、VDR-1B、VDR-2B
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Description
Parameters and Model Explanation of NACHI Variable Displacement Vane Pump VDR-2A-1A5-13
1. Model Explanation
The model VDR-2A-1A5-13 is a member of NACHI VDR 13 design series variable displacement vane pumps, and each segment of the model has a specific technical meaning, which is detailed as follows:
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VDR: Series code, indicating NACHI variable displacement vane pump. This series is designed for energy-efficient and economical operation, with compact structure and reliable performance, widely used in various hydraulic systems.
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2: Head side size code, representing the size grade of the pump head. It determines the basic structural dimensions and displacement range of the pump, which is matched with the overall hydraulic system layout and flow demand.
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A: Mounting method code, indicating the flange mounting type. This mounting method is convenient for fixed installation in hydraulic equipment, ensuring stable operation and easy maintenance.
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1: Pump structure code, representing a single pump configuration. It is suitable for hydraulic systems that require a single flow output, with simple structure and low energy consumption.
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A: Flow characteristic code, indicating the standard flow characteristic of the pump. It ensures stable and precise flow output under different pressure conditions, with good response performance.
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5: Pressure adjustment range code, corresponding to a pressure adjustment range of 90-140 kgf/cm² (1305-2030 psi). It can be flexibly adjusted according to the working pressure requirements of the hydraulic system.
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13: Design code, representing the 13th design version of the VDR series. This design is improved on the basis of the previous 11th and 12th versions, with better compatibility, lower noise and higher durability, and the installation dimension is compatible with the old design versions.
2. Technical Parameters
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Parameter Item
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Specification
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Pump Type
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Variable Displacement Vane Pump (Single Pump)
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Capacity (Displacement)
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11.8 cm³/rev (approx.)
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No-Load Discharge Rate
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– At 1000 min⁻¹: 5.8 L/min (approx.)- At 1200 min⁻¹: 7.0 L/min (approx.)- At 1500 min⁻¹: 10.5 L/min (approx.)- At 1800 min⁻¹: 8.9 L/min (approx.)
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Allowable Peak Pressure
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30.6-61.2 kgf/cm² (435-870 psi)
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Pressure Adjustment Range
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90-140 kgf/cm² (1305-2030 psi)
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Rotation Speed Range
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Minimum: 800 min⁻¹; Maximum: 1800 min⁻¹
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Rotation Direction
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Clockwise (rightward) when viewed from the shaft side
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Weight
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Approx. 19.8 kg (43.7 lbs)
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Drain Requirement
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Drain piping must be direct piping up to a point below the tank fluid level, and back pressure due to pipe resistance should not exceed 4.35 psi
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3. Product Features
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Energy Efficient & Economical: Minimal power loss, especially at full cutoff, which helps reduce energy consumption of the entire hydraulic system.
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Low Noise & High Durability: Improved suction and discharge port configurations and high-quality journal bearings reduce operating noise and vibration, ensuring long service life.
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Built-in Precision Temperature Compensation: Equipped with a high-precision temperature compensation mechanism to maintain stable performance under different temperature conditions.
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Compact & Easy to Operate: Simple and compact design, easy to install and maintain, suitable for a wide range of hydraulic systems.
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Precise Response: Prompt response at both on-off and off-on, ensuring instantaneous and stable high-precision operation.
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