YUKEN A90-FR04HAS-60366/60 Variable Displacement Piston Pump, Proportional Electro-Hydraulic Load Sensing Control (External Amplifier Required), 91.0 cm³/rev, Flange Mount, Right Hand Rotation, Keyed Shaft

The YUKEN A90-FR04HAS Variable Displacement Piston Pump is a top-tier electro-hydraulic proportional unit, expertly engineered to deliver unparalleled precision and energy efficiency in advanced industrial hydraulic applications. A flagship model within YUKEN's renowned A-Series, this pump features a sophisticated proportional pressure and load sensing control system that is explicitly configured for operation with an external amplifier. This design philosophy ensures maximum operational stability, adaptable performance, and intelligent energy management for a diverse array of demanding tasks requiring highly accurate flow and pressure regulation.

Key Features:

• Premium Proportional Electro-Hydraulic Load Sensing Control (04HAS): This pump incorporates YUKEN's advanced electro-hydraulic proportional control for both pressure and load sensing. This intelligent system dynamically adjusts pump output (flow and pressure) to precisely match system demands, leading to substantial energy savings, reduced system heat, and enhanced responsiveness. The "04" designates a Proportional Electro-Hydraulic Load Sensing control type (as per page 5 of your PDF). The "H" indicates a standard high-pressure adjustment range (e.g., 2 - 20.6 MPa for proportional controls, as referenced on page 62 for "04" type models). The "A" in HAS explicitly signifies that an external amplifier is required for operation, providing crucial flexibility in system design and enabling fine-tuned control capabilities. The "60366/60" denotes specific internal design revisions or manufacturing codes, ensuring precise identification and traceability within the YUKEN product catalog.
• Optimal High-Capacity Fluid Delivery (91.0 cm³/rev): With a nominal geometric displacement of 91.0 cm³/rev, as confirmed in the "A" Series Variable Displacement Piston Pumps table (page 25 of your PDF), this A90 model is engineered to provide robust, powerful, and highly efficient fluid delivery. This makes it an ideal choice for heavy-duty and continuous hydraulic operations that demand substantial fluid volumes and exacting flow control.
• Secure Flange Mount and Standard Right-Hand Rotation: The flange-mount (F) configuration ensures a solid and stable mechanical connection, facilitating straightforward integration into various hydraulic systems. The "Right Hand Rotation" (R) specifies the shaft's rotational direction when viewed from the shaft end, ensuring compatibility with standard industrial prime movers.
• High Operating Pressure Range: Leveraging YUKEN's A-series specifications, this pump is capable of a rated operating pressure of 25 MPa and an intermittent operating pressure of 28 MPa (as detailed on page 49 of your PDF, for A90 models with 04 control). These high-pressure capabilities ensure reliable performance in the most challenging industrial applications.
• Superior Efficiency and Acoustic Performance: YUKEN A-series pumps are widely acclaimed for their exceptional overall efficiency, which minimizes power losses and significantly reduces heat generation, promoting cooler system operation and extending the lifespan of hydraulic fluid and components. Furthermore, their advanced design contributes to significantly reduced noise levels, enhancing workplace comfort and operational compliance.
• Unwavering Durability and Reliability: Constructed from premium-grade, robust materials and benefiting from YUKEN's precision engineering and stringent quality control protocols, this piston pump is built to deliver long-lasting and dependable performance under arduous and continuous industrial operating conditions, contributing to minimized downtime and maintenance costs.

Manufacturer Information:

YUKEN KOGYO CO., LTD. Yuken Kogyo Co., Ltd. is a globally recognized leader in the manufacturing of hydraulic equipment, specializing in innovative and high-quality hydraulic pumps, valves, and other control components. With a steadfast commitment to advancing hydraulic technology, Yuken continuously delivers robust, reliable, and technologically sophisticated solutions across a diverse range of industrial sectors worldwide. Their products are meticulously engineered for precision, efficiency, and exceptional durability, evolving consistently to meet the dynamic and demanding requirements of modern hydraulic machinery and systems.