Product Description
LIC Hydraulic’s Eaton Vickers 72400 Series axial piston variable displacement pumps are the engine of precision for modern hydrostatic transmissions (HST). Designed for mid-range mobile equipment, models like 72400-SRL-04REV, 72400-STF-04, and 72400-038-04 provide seamless speed and directional control. These pumps feature an integrated charge pump and valve package, making them a compact and robust solution for closed-loop systems. We provide 100% Drop-in Interchangeability for the 72400 series, ensuring your machinery operates with maximum efficiency and zero downtime.
Technical Specifications (Bulleted List)
Series Framework: 72400 Series (Closed-Loop).
Displacement Range: Typically $40\text{–}49\text{ cm}^3\text{/r}$ ($2.44\text{–}3.0\text{ in}^3\text{/r}$).
Rated Pressure: $210\text{ bar}$ ($3000\text{ PSI}$).
Peak Pressure: $350\text{ bar}$ ($5000\text{ PSI}$).
Control Options: Manual Lever, Hydraulic Remote, or Electric Proportional.
Features: Integrated Charge Pump and Pressure Override valves.
Key Technical Advantages
Compact Integration: By housing the charge pump and relief valves within the main body, the 72400 series minimizes the hydraulic footprint and eliminates external plumbing, reducing the risk of leaks.
Smooth Hydrostatic Control: The precision-engineered swashplate mechanism offers ultra-smooth acceleration and deceleration, critical for machines requiring high maneuverability.
High Power Density: Engineered for space-constrained engine bays, this pump delivers high-pressure performance without the bulk of traditional industrial pumps.
Bi-Directional Reliability: Designed for frequent reversing cycles, the internal rotating groups are optimized to maintain tight tolerances and high volumetric efficiency throughout their lifecycle.
Application Areas
Turf Care: Main drive pumps for commercial zero-turn mowers and utility vehicles.
Infrastructure: Vibration drives and propulsion for small road rollers and compactors.
Agriculture: Steering and drive systems for specialty tractors and harvesters.
Expert Maintenance Tips
Charge Pressure Verification: In a closed-loop system, the charge pump is the lifeblood. Always verify that charge pressure is within spec ($220\text{–}300\text{ PSI}$) to prevent cavitation in the main piston circuit.
Neutral Adjustment: If your equipment “creeps” when the control lever is in neutral, a simple mechanical adjustment of the swashplate link on the 72400-SRL-04REV is required to find the true hydraulic zero.
Strict Fluid Cleanliness: Piston pumps in closed-loop circuits are sensitive to contaminants. Use high-quality ISO VG46/68 oil and ensure the system filtration meets ISO 4406 18/16/13 standards to prevent premature wear.
Company Profile
Professional Manufacturer
