VDR-1B-2A4-22 NACHI Variable vane pump
VDR Series: VDR-1A、VDR-2A、VDR-1B、VDR-2B
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Parameters and Model Explanation of NACHI Variable Vane Pump VDR-1B-2A4-22
1. Model Explanation
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VDR: Series Code, indicating NACHI VDR series variable volume vane pump, which is an economical and energy-saving basic model with compact structure and low noise operation.
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1: Pump Size, representing the 1-series pump/head side size, corresponding to a smaller displacement range and overall structural dimension compared with the 2-series pump.
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B: Mounting Method, standing for flange type mount, which is a common mounting way for hydraulic pumps to ensure stable installation in various hydraulic systems.
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2: Ring Size, indicating the specified ring/head ring size for the pump, which is matched with the internal structure to enhance sealing performance and operational stability.
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A: Flow Characteristic, representing fixed displacement type, meaning the pump can maintain a stable discharge flow under specified working conditions.
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4: Pressure Adjustment Range, corresponding to 60-100 psi (equivalent to 4.1-6.9 MPa), which is the adjustable range of the pump’s working pressure to meet different system pressure requirements.
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22: Design Number, indicating the 22nd design series of the VDR pump[superscript:3]. This design is an upgraded version based on the previous 18-21 designs, with optimized internal structure, better wear resistance and improved operational stability while keeping the mounting dimensions unchanged.
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 Volume Single Vane Pump
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Displacement
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Approx. 16 cm³/rev
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No-Load Discharge Flow (at 1800 rpm)
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Approx. 29 L/min
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Pressure Adjustment Range
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4.1-6.9 MPa (60-100 psi)
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Maximum Allowable Peak Pressure
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12 MPa (1740 psi)
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Speed Range
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750-1800 rpm
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Shaft Seal
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Type 1 (Standard Shaft Seal)
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Working Medium
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Mineral Oil, ISO VG32-68 (Viscosity Index ≥ 90)
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Working Oil Temperature Range
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10-60℃
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Weight
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Approx. 15.2 kg (33.5 lb)
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Key Features
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High efficiency with minimal power loss, quiet operation, compact design, precise performance and quick response, long service life[superscript:2][superscript:4]
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3. Supplementary Notes
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MAECENAS IACULIS
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