Rexroth A10VSO18 A10VSO28 Piston Pump | A10VSO18DFR1 | A10VSO28DFR
| Model Number | A10VS028DFR/31R-PPA12N00, A10VSO18DFR1/31R-PP12N00 |
|---|
Product Description
The Rexroth A10VSO Series (specifically A10VSO18 and A10VSO28) from LIC Hydraulic is the global industry standard for Variable Displacement Axial Piston Pumps. Designed for open-circuit industrial applications, these pumps utilize a swashplate design to modulate flow based on real-time demand. Models like the A10VSO18DFR1/31R-PPA12N00 feature sophisticated Load Sensing technology to maximize energy efficiency. We provide 100% drop-in replacements that match original Rexroth specifications for ISO mounting, shaft dimensions, and control curves.
Technical Highlights
Flow Rates: $18\text{ cc/rev}$ and $28\text{ cc/rev}$ frame sizes.
Max Pressure: Nominal $280\text{ bar}$ ($4060\text{ psi}$); Peak $350\text{ bar}$.
Control Type: DFR1 (Pressure & Flow / Load Sensing).
Series: 31 Series for heavy-duty industrial use.
Core Advantages
Dynamic Load Sensing (DFR1): The DFR1 controller optimizes the pump’s displacement to match the required flow and pressure of the actuator, preventing parasitic power loss and excessive heat generation.
Quiet Operation: Advanced fluid path optimization and swashplate damping technology result in ultra-low noise levels—critical for indoor manufacturing environments and worker safety.
Modular Through-Drive: The A10VSO series allows for multiple pump stacking (tandem setups), enabling the operator to power multiple hydraulic circuits from a single engine or motor PTO.
Industrial Grade Reliability: Built with hardened rotating groups and premium bearings, the A10VSO18 and A10VSO28 are engineered to withstand millions of pressure cycles in demanding production environments.
Expert Maintenance Tips
LS Margin Adjustment: For optimal DFR1 performance, ensure the “differential pressure” (margin) is set according to your specific valve requirements (typically $14\text{–}20\text{ bar}$).
Case Drain Management: The case drain line must be connected to the highest port and return directly to the reservoir with zero back-pressure. High case pressure is the #1 cause of shaft seal leaks.
Oil Cleanliness: Maintain fluid cleanliness at ISO 18/16/13 or better. Piston pumps are sensitive to fine silt; regular filtration maintenance will double the life of the cylinder block and valve plate.
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