Engineered for precision and reliability in tough hydraulic environments, the THM A4VTG Series is a premium swash plate-controlled axial piston pump designed specifically for hydrostatic closed-loop systems. Built to handle medium-duty applications, this pump delivers flexible flow control, rapid response times, and exceptional energy efficiency. With its robust construction and compact footprint, the A4VTG fulfills the rigorous demands of modern construction, agriculture, material handling, and industrial manufacturing machinery.

How the A4VTG Pump Works:-

The A4VTG operates on an advanced swash plate design tailored for hydrostatic closed circuits—where fluid travels continuously between the pump and the motor without a middle reservoir.

• Variable Displacement: The rotating cylinder block drives the pistons, while the adjustable angle of the swash plate dictates their stroke length. A steeper tilt pumps more fluid, while a flat (neutral) angle halts the flow completely.
• Bi-Directional Flow: By tilting the swash plate past the neutral position, the pump seamlessly switches the direction of the fluid flow, allowing for smooth, instant directional control of your machinery.
• Proportional Output: The total fluid output is perfectly proportional to both the speed of the drive shaft and the angle of the swash plate, allowing for stepless acceleration from zero to maximum capacity.

Key Features & System Advantages:-

• Optimized Flow Control: Delivers strictly the flow and pressure your system actively needs. This drastic reduction in wasted energy lowers heat generation, improves system efficiency, and cuts long-term operational costs.
• Integrated Boost Pump: A built-in boost pump automatically maintains necessary circuit pressure, supplies control oil, and safely compensates for any internal fluid leakage.
• Dual Pressure Relief Valves: Built-in safety mechanisms protect the hydraulic circuit from dangerous pressure spikes, ensuring operator safety and extending the lifespan of your downstream components.
• Space-Saving Compact Design: Engineered to deliver massive power within a highly restricted footprint, making it incredibly easy to integrate into tight factory equipment enclosures or crowded mobile machinery.
• Rugged Durability: Manufactured with heavy-duty materials and securely sealed against site contaminants to withstand extreme temperatures, harsh environments, and high-cycle industrial workloads.

Ideal Industry Applications:-

The flexible power and bi-directional control of the A4VTG make it a highly adaptable solution across multiple sectors:

• Mobile Construction Machinery: Excavators, wheel loaders, and asphalt pavers.
• Agricultural Equipment: Forestry harvesters, crop sprayers, and heavy-duty seed drills.
• Material Handling: High-capacity forklifts, reach stackers, and mobile cranes.
• Industrial Manufacturing: Hydraulic presses, CNC machining centers, and automated assembly lines.

Available Model Types:-

We offer various displacement sizes, mounting setups, and control choices to perfectly match your power and pressure requirements. Popular configurations include:

• A4VTG71HWM/32R-NSD010F001S-S
• A4VTG90HWMT/32R-NSD10F005S

Essential Maintenance Tips for the A4VTG:-

To maximize the service life and efficiency of your pump, we recommend the following routine maintenance:

• Fluid Quality: Use only high-grade hydraulic oil and adhere to strict replacement schedules to prevent system contamination.
• Filter Replacements: Regularly change hydraulic filters to ensure clean fluid circulation and prevent internal scoring.
• Visual Inspections: Routinely monitor the pump during operation for any signs of external leaks, abnormal vibrations, or unusual overheating.
• Component Checks: Regularly inspect the swash plate controls for smooth operation, verify that the integrated boost pump is maintaining proper circuit pressure, and ensure relief valves are calibrated to the correct safety thresholds.
• Seal Integrity: Proactively inspect and replace O-rings and internal seals to prevent efficiency-draining internal leaks.