ALA10VO74DFLR Hydraulic Piston Pump 74cc High Pressure Variable Displacement Pump for Rexroth

Product Overview:
The ALA10VO74DFLR 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 74 cm³/rev and advanced DFLR combined control (power control + pressure cutoff + load sensing), it provides stepless, energy-efficient flow adjustment for a wide range of medium-pressure industrial and mobile applications. This unit features through-drive capability, low operating noise, and excellent suction characteristics, ensuring a long service life and minimal maintenance . It is a direct, high-quality replacement solution for original Rexroth equipment.

Technical Specifications:

• Model: ALA10VO74DFLR (complete model e.g., /31L-PKC92N00-S4261, Material #: R902507080) 

• Type: Swashplate design, variable axial piston pump

• Displacement: 74 cm³/rev (steplessly variable)

• Nominal Pressure: 250 bar (continuous operation)

• Maximum Pressure: 315 bar (peak)

• Maximum Speed: 2400 rpm at Vg max

• Flow Rate: Up to 177 L/min (at max speed)

• Control Type: DFLR - Combined power control + pressure cutoff + flow control (load sensing)

• 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

• Shaft Type: Splined or keyed options available

• Seal Material: FKM / NBR options

• Weight: Approximately 25-28 kg

• Material: Robust cast iron construction

• Temperature Range: -20°C to +90°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 . Features excellent suction characteristics for consistent operation even under challenging intake conditions .

• DFLR Combined Control: Advanced control combining power limitation (to prevent engine overload), pressure cutoff (for system protection), and load sensing (for flow matching to demand) - delivering optimal energy efficiency for complex machinery operations .

• 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 .

• 100% 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 reducing sound emissions in noise-sensitive areas .

• Short Control Response Times: Controls with rapid response times enable quick and accurate adjustments to hydraulic flow, which is critical in dynamic systems where rapid changes in load conditions occur .

• Durability: Robust construction promises a long service life, minimizing downtime and maintenance costs over time . Dual drain ports enhance maintenance capabilities by allowing for easier servicing and fluid management .

• High Power Density: Compact construction delivers excellent power-to-weight ratio for easy installation in space-constrained applications.

• High-Pressure Capability: Up to 315 bar peak pressure for demanding applications.

Main Applications (Suitable Equipment):
The ALA10VO74DFLR is widely recognized as a versatile and reliable hydraulic power unit for medium-pressure applications requiring energy-efficient control. It is extensively used in:

1. Excavators & Construction Machinery:

• Main hydraulic pump for medium excavators (12-20 ton class)

• Crawler excavators and material handlers

• Wheel loaders and backhoe loaders

• Road rollers and compaction equipment

2. Crane & Lifting Equipment:

• Mobile cranes and crawler cranes

• Truck-mounted cranes and telescopic handlers

• Aerial work platforms (boom lifts, scissor lifts)

3. Concrete Machinery:

• Concrete pump trucks - boom control systems

• Concrete mixers and placing booms

• Shotcrete machines and grouting equipment

4. Industrial Machinery:

• Machine tools (hydraulic feed systems, clamping systems)

• Injection molding machines - main or auxiliary functions

• Hydraulic presses and forming equipment

• General industrial hydraulic power units

5. Material Handling Equipment:

• Forklifts (heavy-duty counterbalance trucks)

• Telehandlers and reach stackers

• Container handlers and port equipment

6. Agricultural Machinery:

• Tractors (hydraulic implement control)

• Harvesters and forage harvesters

• Agricultural sprayers and fertilizer applicators

7. Mining & Tunneling:

• Mining machinery and rock drills - auxiliary systems

• Tunneling equipment and roadheader auxiliary functions

8. Specialty Applications:

• Municipal vehicles (sweepers, refuse trucks)

• Snow removal equipment

• Marine hydraulics and deck machinery