A3H16-LR01KK-10 Yuken variable piston pump
YUKEN piston pump series: A series, AR series, ARL1 series, A3H series, A3HG series, A7H series.
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Product Manual for Yuken Variable Displacement Piston Pump A3H16-LR01KK-10
1. Product Overview
2. Model Interpretation
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A3H: Series code, indicating the A3H series high-pressure variable displacement piston pump.
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16: Displacement code, representing a geometric displacement of 16.3 cm³/rev (cubic centimeters per revolution), equivalent to approximately 0.995 in³/rev (cubic inches per revolution).
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LR: Control type code, indicating pressure compensation control. This control mode enables the pump to automatically adjust the output flow based on the system pressure demand, maintaining stable working pressure and realizing energy-saving operation.
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01: Design code for the control valve, representing the standard pressure compensation control configuration, with stable pressure regulation performance and wide applicability in general industrial systems.
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KK: Shaft type code, indicating a keyed shaft with a diameter of 44.45 mm (1.75 inches), which can be adapted to most motor couplings.
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10: Configuration code, representing standard configurations such as seal material and oil port direction, which can be customized according to specific requirements.
3. Technical Parameters
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Parameter Item
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Specification
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Geometric Displacement
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16.3 cm³/rev
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Rated Pressure
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28 MPa (280 bar)
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Maximum Operating Pressure
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35 MPa (350 kgf/cm²)
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Pressure Adjustment Range
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5 MPa to 35 MPa (50 bar to 350 bar)
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Maximum Speed
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3600 rpm (at suction pressure of 0 kPa)
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Recommended Operating Speed
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1800 rpm (optimal efficiency at this speed)
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≥ 95%
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Overall Efficiency (at 1800 rpm, 350 kgf/cm²)
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≥ 90%
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Hydraulic Fluid
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Petroleum-based anti-wear hydraulic oil or R&O (rust and oxidation inhibitor) hydraulic oil, ISO VG 32 or 46
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Viscosity Range
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20 to 400 cst (at 0 – 60 °C)
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Oil Contamination Control
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NAS Grade 10 or better
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Suction Pressure Range
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-0.16 to +0.5 kgf/cm² (-127 mmHg to +0.5 kgf/cm²); adjust to 0 to +0.5 kgf/cm² when speed exceeds 1800 rpm
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Weight
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Approximately 14.5 kg (32 lbs)
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4. Structural Features
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High Efficiency: Under the condition of 350 kgf/cm² pressure and 1800 rpm shaft speed, the volumetric efficiency is no less than 95% and the overall efficiency is no less than 90%, which effectively reduces energy loss.
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Compact Size: The pump has a high output power to mass ratio, which allows for a very compact design, making it easy to install in limited space.
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Flexible Control: Adopting pressure compensation control (LR01 type), it can automatically adjust the output flow according to the system pressure, maintaining stable system pressure, avoiding unnecessary energy consumption and improving the stability of the hydraulic system.
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Durable Structure: The key components such as the cylinder block and piston are made of high-quality materials, ensuring long service life and reliable operation even under high-pressure working conditions.
5. Installation and Maintenance Instructions
5.1 Installation Requirements
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When installing the pump, the filling port should be positioned upwards to ensure smooth oil filling and prevent air from entering the pump.
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Use a flexible coupling for shaft connection to avoid bending or thrust stress. The maximum permissible misalignment is less than 0.1 mm TIR, and the maximum permissible misangularity is less than 0.2°.
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The height of the pump suction port should be within 1 meter from the oil level in the reservoir. The suction port pipeline should use a pipe with the same diameter as the specified pipe flange.
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The suction port must be equipped with at least a 100 µm (150 mesh) reservoir type filter, and the return line must be equipped with a line type filter of less than 10 µm to control oil contamination.
5.2 Maintenance Points
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Regularly check the oil contamination degree and maintain it within NAS Grade 10 to avoid pump failure and shorten service life caused by oil contamination.
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Replace the hydraulic oil regularly according to the working environment and operating time, and clean the filter to ensure the cleanliness of the hydraulic system.
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Regularly inspect the tightness of the pump’s oil ports and connections to prevent oil leakage.
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Do not modify the pump without authorization, as this may affect the performance and safety of the product. Any modification must be approved by Yuken official technical personnel.
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When the pump is not in use for a long time, drain the internal hydraulic oil and store it in a dry, ventilated environment to avoid rust and corrosion.
6. Application Fields
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Industrial machinery: High-pressure power units of injection molding machines, die-casting machines, and hydraulic presses.
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Construction machinery: Hydraulic drive systems of excavators, loaders, and other equipment.
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Machine tools: Servo hydraulic circuits of high-precision machining centers.
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Marine and offshore engineering: Power supply for deck machinery and hydraulic winches.
7. Disclaimer
yuken Variable Displacement Piston Pumps
Complete products, original authentic products, fast delivery!Welcome to consult.
Process steps：
Customer inquiry: Customers will make inquiries before placing an order to understand product details and communication needs.
Quotation: According to customer needs, provide a formal quotation, including the name, model, quantity, delivery time, payment method, etc. of the goods.
Order confirmation: After the customer confirms the quotation, a formal purchase order will be placed.
Confirm the delivery time: communicate the delivery time with the production department, inform the factory of the order details, and arrange the production plan.
Sign an export contract: After the two parties confirm that it is correct, sign an export contract to establish a trade relationship.
Implement the letter of credit (if applicable): If the payment method of the letter of credit is used, the customer needs to be urged to issue the certificate and review the contents of the letter of credit.
Export stocking: According to the requirements of the contract and the letter of credit, arrange production, purchase raw materials and packaging, and prepare the goods.
Chartering and booking: Contact the freight forwarder to make a booking and arrange the transportation of goods.
Export inspection: Apply to the quality inspection department for export commodity inspection and provide relevant documents.
Apply for a write-off slip: apply for a write-off slip from the foreign exchange management department for subsequent foreign exchange write-off.
Export declaration: Declare exports to the customs and provide documents such as power of attorney for customs declaration, customs declaration form for export goods, commercial invoice, packing list, etc.
