Rexroth A10VO45 Hydraulic Pump 45cc Axial Piston Variable Displacement Pump for Excavator

Product Overview:
The A10VO45 is a high-performance swashplate design axial piston pump from the renowned Rexroth A10V 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 45 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: A10VO45

• Type: Swashplate design, variable axial piston pump

• Displacement: 45 cm³/rev (steplessly variable from Vg max to Vg min) 

• Nominal Pressure: 280 bar (continuous operation) 

• Maximum Pressure: 350 bar (peak) 

• Maximum Speed: 3100 rpm 

• Flow Rate: Up to 117 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), ED (electro-proportional), and more 

• Design: For open circuit hydraulic systems 

• Mounting Flange: SAE / ISO 3019-1 standard (2-bolt) 

• Port Connection: SAE J518 flange ports 

• Weight: Approximately 21-25 kg (depending on configuration) 

• 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. Up to 30% more durable than aluminum alternatives .

• Multiple Advanced Control Options: Wide variety of controls available (DR/DFR/DFR1/DRG/DFLR/ED) 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.

• 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 with spherical porting ensures low noise levels during operation, contributing to a more comfortable working environment .

• Short Control Response Times: Controls with rapid response times ensure precise operations and better handling in dynamic system conditions. Offers 25% faster response times than fixed-displacement models .

• High Efficiency: Axial piston design achieves up to 88-95% efficiency, 20% higher than traditional gear pumps, delivering consistent high-pressure hydraulic flow .

• Durability: Robust bearing system and high-quality cast iron materials ensure long service life in demanding continuous operation. The drive shaft can withstand both axial and radial loads .

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

Main Applications (Suitable Equipment):
The A10VO45 is widely recognized as a versatile and reliable hydraulic power unit for medium-pressure applications. It is extensively used in:

1. Excavators & Construction Machinery:

• Main pump for small to medium excavators (6-12 ton class) - enabling precise operations like digging and lifting 

• Material handlers (e.g., Liebherr A944 CHD long wheel material handler) 

• Backhoe loaders and compact loaders

• Road rollers and compaction equipment

• Concrete pump trucks - auxiliary boom control systems 

2. Material Handling Equipment:

• Forklifts (counterbalance and reach trucks)

• Telehandlers and rough-terrain forklifts

• Aerial work platforms (scissor lifts, boom lifts)

3. 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

• Plastic machinery and blow molding equipment 

4. Agricultural Machinery:

• Tractors (auxiliary hydraulic functions)

• Harvesters and agricultural implements

• Sprayers and fertilizer applicators

5. Metallurgical Industry:

• Steel mill equipment (shearing machines, bending rolls) 

• Forging manipulators and handling equipment

6. Mining & Tunneling:

• Small mining equipment and rock drills - auxiliary systems 

7. Specialty Applications:

• Hydraulic systems for lifting machinery 

• Shipbuilding and marine hydraulic systems