Factory Price AA10VO28 Piston Pump Replace for A10VO Series Hydraulic Variable Displacement Pump

Product Overview:
The AA10VO28 is a high-performance swashplate design axial piston pump from the renowned Rexroth A10VO series. Specifically engineered for open circuit hydraulic systems, this variable pump delivers exceptional reliability, efficient operation, and precise control under demanding conditions . With a displacement of 28 cm³/rev and multiple advanced control options, it provides stepless flow adjustment for a wide range of medium-pressure industrial and mobile applications . This unit is a direct, high-quality replacement solution for original Rexroth equipment.

Technical Specifications:

• Model: AA10VO28

• Type: Swashplate design, variable axial piston pump

• Displacement: 28 cm³/rev (steplessly variable) 

• Nominal Pressure: 280 bar (continuous operation) 

• Maximum Pressure: 350 bar (peak) 

• Maximum Speed: Up to 3600 rpm 

• Flow Rate: Up to 84 L/min (at max speed) 

• Control Options: DR (pressure control), DFR/DFR1 (pressure/flow control - load sensing), DRG (pressure control with remote compensator), DFLR (power control), and more 

• Design: For open circuit hydraulic systems

• Through-Drive: 100% through drive suitable for adding gear pumps and axial piston pumps up to the same nominal size 

• Mounting Flange: SAE / ISO 3019-1 standard 

• Weight: Approximately 15 kg 

• Material: Robust cast iron construction 

• Temperature Range: -20°C to +80°C 

Core Features:

• Robust Swashplate Design: The proven swashplate design with cast iron construction ensures reliable operation, excellent efficiency, and long service life in open circuit applications. The drive shaft can withstand both axial and radial loads .

• Multiple Advanced Control Options: Wide variety of controls available (DR/DFR/DFR1/DRG/DFLR) to suit specific application needs, allowing precise customization to various system requirements .

• Stepless Variable Displacement: Flow is proportional to drive speed and displacement, adjustable steplessly from maximum down to zero via the swashplate angle, offering precise flow matching to reduce energy consumption and heat generation .

• Excellent Suction Characteristics: Superior self-priming performance ensures reliable operation even in demanding conditions and at higher speeds, minimizing cavitation risks .

• Through-Drive Capability: Universal through-drive design allows mounting of additional pumps up to the same nominal size for multi-circuit systems, enabling flexible and space-saving system configurations .

• Low Noise Operation: Optimized design ensures low noise levels during operation, contributing to a more comfortable working environment and meeting stringent workplace noise regulations .

• Short Control Response Times: Controls with rapid response times ensure precise operations and better handling in dynamic system conditions .

• High Power-to-Weight Ratio: Compact construction delivers impressive power density in a lightweight 15 kg package .

• Durability: Robust bearing system and high-quality cast iron materials ensure long service life in demanding continuous operation, with MTBF exceeding 10,000 hours .

• Dual Case Drain Ports: Two case drain ports facilitate maintenance and fluid management within the hydraulic system .

Main Applications (Suitable Equipment):
The AA10VO28 is widely recognized as a versatile and reliable hydraulic power unit for medium-pressure applications. It is extensively used in:

1. Concrete Pump Trucks (Primary Application):

• Main or auxiliary pump for SANY concrete pump trucks 

• Concrete pump truck boom control systems 

• Truck-mounted concrete pumps and stationary concrete pumps

• Concrete placing booms and line pumps

2. Excavators & Construction Machinery:

• Small to medium excavators (6-12 ton class) - auxiliary pump functions 

• Concrete pump trucks - auxiliary boom control systems

• Road rollers and compaction equipment

• Backhoe loaders and compact loaders

3. Material Handling Equipment:

• Forklifts (counterbalance and reach trucks)

• Telehandlers and rough-terrain forklifts

• Aerial work platforms (scissor lifts, boom lifts)

• Mobile cranes - auxiliary functions

4. Industrial Machinery:

• Machine tools (hydraulic feed systems, clamping systems) 

• Injection molding machines - auxiliary functions

• Hydraulic presses (C-frame, bench presses)

• General industrial hydraulic power units 

• Packaging machinery with hydraulic drives

5. Agricultural Machinery:

• Tractors (auxiliary hydraulic functions) 

• Harvesters and agricultural implements

• Sprayers and fertilizer applicators

6. Mining & Tunneling:

• Small mining equipment and rock drills - auxiliary systems 

• Tunneling machinery auxiliary systems

7. Specialty Applications:

• Municipal vehicles and sweepers

• Lifting machinery and hoisting equipment 

• Hydraulic systems for industrial automation