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Uchida-Rexroth AP2D Series Pump | AP2D25, AP2D28 | AP2D25LV1RS7-929-4 | Hydraulic Main Pump for Excavator

Model Number

AP2D, AP2D12, AP2D16, AP2D18, AP2D21, AP2D25, AP2D28, AP2D36, A2D AP2D25LV1RS7-929-4, AP2D28LV1RS7-862-0

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Product Description

Uchida-Rexroth AP2D25 & AP2D28 Series Axial Piston Main Pumps for Mini Excavators

Product Overview: The Uchida-Rexroth AP2D series is the premier power standard for high-performance mini excavator hydraulic systems worldwide. Specifically engineered for the 3.5-ton to 6-ton excavator class, these axial piston variable displacement tandem pumps are renowned for their exceptional power density and ultra-compact architecture. Featured models like the AP2D25LV1RS7-929-4 and AP2D28LV1RS7-862-0 incorporate advanced load-sensing and power control regulators. This allows the pump to modulate flow instantaneously based on real-time operational demand, ensuring balanced power distribution, responsive handling, and significant energy savings during multi-function operations.

Key Technical Advantages:

  • Integrated Tandem Architecture: Delivers dual independent variable outputs within an extremely compact housing, including mounting for a gear pump, perfectly suited for the constrained engine compartments of mini excavators.

  • High-Response Regulator Control: Features LV (Constant Power Control) logic, automatically adjusting flow output to match engine power, preventing stalling and optimizing fuel efficiency.

  • Rapid Dynamic Response: The optimized servo-variable mechanism provides agile displacement switching, enhancing machine grading speeds and operator feedback sensitivity.

  • Solenoid Valve Compatibility: Supports specialized solenoid valves for precise electronic control of travel speed switching and hydraulic system mode selection.

  • 100% OEM Standard Compatibility: Manufactured to strict Uchida-Rexroth factory specifications, ensuring splined shafts (S7 spec), mounting flanges, and regulator porting align perfectly for a seamless “drop-in” replacement.

Detailed Models & Parameters:

  • Core Series: Uchida-Rexroth AP2D Series.

  • Representative Models: AP2D25LV1RS7-929-4, AP2D28LV1RS7-862-0, AP2D25, AP2D28.

  • Displacements: 25.0 cm³/rev (AP2D25) / 28.0 cm³/rev (AP2D28).

  • Pressure Ratings: Rated at 24.5 – 26 MPa (3500 – 3800 PSI) continuous; Peak capability up to 30 MPa.

  • Rotation: R (Clockwise/CW).

  • Target Applications: Mini Excavators (3.5-6 Ton), Auxiliary pumps for drilling rigs, and municipal construction equipment.

Company Profile

We adhere to international quality management standards and provide a 1-year warranty including maintenance and replacement. We have established long-term strategic cooperation with many well-known brands and continuously launch new products to meet market development. Flexible payment terms are supported, including USD settlement, Alipay, Western Union and T/T.
 
Relying on our standardized production base and professional foreign trade team, we provide competitive factory direct prices, efficient logistics channels and punctual delivery. FJZY Hydraulic is devoted to being your trustworthy long-term partner in hydraulic and agricultural machinery fields.
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Our Advantages

Fast & Reliable Delivery

We optimize global logistics channels to ensure every customer receives their goods on time, anywhere in the world.

Extensive Partnerships

We collaborate with numerous factories, offering a wide range of product selections and providing you with instant quote responses

Strict Quality Assurance

Quality first is our principle. We provide a one-year warranty service, ensuring you receive top-tier quality products with confidence.

Competitive Pricing

Through efficient production and close cooperation, we offer highly competitive prices, guaranteeing a cost-effective experience for you.
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