| Quantity: | |
|---|---|
A11VLO190LRDU2
Product Overview:
The A11VLO190LRDU2 is a high-performance swashplate design axial piston pump from the renowned Rexroth A11VLO series. Specifically engineered for open circuit hydraulic systems, this variable pump delivers exceptional power density, reliable operation, and precise control under extreme loads. With a displacement of 193 cm³/rev and advanced LRDU2 combined control (power control + pressure cutoff + hydraulic remote control), it provides stepless, energy-efficient flow adjustment for demanding mobile and industrial applications. This unit is a direct, high-quality replacement solution for original Rexroth equipment, widely used in concrete pump trucks, large excavators, and mining machinery.
Technical Specifications:
| Parameter | Value |
|---|---|
| Model | A11VLO190LRDU2 (Series 1) |
| Type | Swashplate design, variable axial piston pump |
| Displacement (Vg max) | 193 cm³/rev |
| Displacement (Vg min) | 0 cm³/rev (steplessly variable) |
| Nominal Pressure | 350 bar (5000 psi) |
| Maximum Pressure | 400 bar (5800 psi) |
| Peak Pressure Capability | Up to 450 bar depending on configuration |
| Maximum Speed at Vg max | 2100-2500 rpm |
| Flow Rate | Up to 405 L/min (at max speed) |
| Power Rating | 236 kW at 350 bar |
| Torque | 1075 Nm at 350 bar |
| Control Type | LRDU2 - Combined power control + pressure cutoff + hydraulic remote control |
| 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 95-104 kg |
| Material | High-strength cast iron housing with hardened steel internal components |
| Temperature Range | -20°C to +95°C |
Core Features:
LRDU2 Combined Control: Advanced control system combining L (power control), R (pressure cutoff), DU2 (hydraulic remote control). Power control is externally adjustable even when the pump is running, ensuring constant power output regardless of load variations. The DU2 hydraulic remote control allows precise displacement adjustment via external pilot pressure, enabling smooth and responsive machine operation .
Robust Swashplate Design: The proven swashplate design with high-strength cast iron construction ensures reliable operation, excellent volumetric efficiency (up to 95%), and long service life in open circuit applications. Cast iron housing provides superior vibration damping and wear resistance.
High-Pressure Capability: Delivers 350 bar nominal and 400 bar peak pressure (up to 450 bar in certain configurations), meeting the most demanding mobile and industrial application requirements .
Stepless Variable Displacement: Output flow is proportional to drive speed and infinitely variable between Vg max and Vg min = 0, 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. For high-speed applications, an optional built-in charge pump (impeller) is available.
100% Through-Drive Capability: Universal through-drive design allows mounting of additional pumps (gear pumps or smaller axial piston pumps) up to the same nominal size, enabling flexible and space-saving multi-circuit system configurations .
Low Noise Operation: Optimized distribution plate design and advanced housing with reinforcing support ribs effectively reduce fluid pulsation, achieving lower noise levels compared to conventional pumps .
High Power Density: Delivers 236 kW of power at max flow with excellent power-to-weight ratio (approx. 100 kg), maximizing machine performance in heavy-duty applications.
Durability: High-quality materials and stringent quality control processes ensure long service life in demanding continuous operation, with MTBF exceeding 15,000 hours .
Versatile Installation: The pump can operate under self-priming conditions, with tank pressurization, or with optional built-in charge pump (impeller) for enhanced suction performance .
Main Applications (Suitable Equipment):
The A11VLO190LRDU2 is the specialized high-power unit for heavy machinery requiring high-pressure, variable flow hydraulics. It is extensively used in:
Concrete Pump Trucks (Primary Application):
Main hydraulic pump for large concrete pump trucks (37m-56m boom pump trucks)
SANY, Zoomlion, Putzmeister, and Schwing concrete pump trucks - standard main pump configuration for many models
Truck-mounted concrete pumps and stationary concrete pumps
Concrete placing booms and shotcrete machines
Wet shotcrete machines and concrete spraying equipment
Large Excavators & Construction Machinery:
Main hydraulic pump for large excavators (30-40 ton class) - including SANY 245 excavator
Crawler excavators and material handlers
Wheel loaders and backhoe loaders
Crawler cranes and heavy lifting equipment
Mining & Tunneling Machinery:
Mining machinery and coal mining equipment
Roadheaders and boom-type tunneling machines
Tunnel boring machines (TBM) and shield tunneling machines
Rotary drilling rigs
Rock drilling rigs and foundation equipment
Heavy Industrial Machinery:
Large hydraulic presses and forging equipment
Metallurgical equipment and steel mill machinery
Large injection molding machines - main hydraulic power
General industrial hydraulic power units
Crane & Material Handling Equipment:
Mobile cranes and crawler cranes - main hydraulic systems
Material handlers and heavy lifting equipment
Port machinery and container handlers
Specialty Applications:
Dump trucks and mining haulers
Forestry equipment and harvesters
Agricultural machinery and large tractors
Marine and offshore hydraulic systems
Petroleum and oil field equipment