Voith IPVP6 Internal Gear Pump | IPVP 6/125-101 | IPVP6-80 451 | High Pressure

The Voith IPVP Series from LIC Hydraulic is the benchmark for High-Pressure Internal Gear Pumps. Engineered with Voith’s patented gap-compensation technology, models like the IPVP 6/125-101 and IPVP6-80 451 deliver consistent volumetric efficiency at pressures up to $330\text{ bar}$. Specifically optimized for variable-speed servo drives, the IPVP6 series combines the reliability of a gear pump with the performance of a high-end piston pump. We provide 100% drop-in replacements, ensuring total mechanical compatibility with original Voith mounting, shafting, and efficiency standards.

Technical Highlights

• Frame Size: Size 6 (high flow/high pressure group).

• Displacements: $80, 100, 125\text{ cc/rev}$.

• Max Pressure: Continuous duty up to $315\text{ bar}$ ($4500\text{ psi}$), Peak $330\text{ bar}$.

• Design: Internal gear with radial and axial pressure compensation.

Core Advantages

• Superior Efficiency: The multi-stage gap compensation ensures that internal leakage is minimized across a broad temperature and pressure range, maximizing energy output for the machinery.

• Low Pulsation & Low Noise: The smooth meshing of the internal gears reduces hydraulic ripples, ensuring the silent operation of the power unit and extending the life of seals and fittings.

• Servo-Drive Compatible: Engineered to handle the frequent speed reversals and low-speed high-torque requirements of modern servo-hydraulic systems without compromising lubrication or performance.

• Rugged Cast Iron Housing: The rigid body construction minimizes internal distortion under high-pressure spikes, maintaining precision alignment of the internal rotating elements.

Expert Maintenance Tips

• System Filtration: Internal gear pumps have extremely tight clearances for gap compensation. Maintain oil cleanliness at ISO 17/15/12 or better. Particle contamination is the primary cause of efficiency loss.

• Inlet Conditions: Ensure the suction line is appropriately sized to prevent cavitation, especially when used with high-speed servo motors. A vacuum at the inlet will damage the precision-ground gears.

• Oil Selection: Use high-quality anti-wear (AW) hydraulic fluids. Given the high-pressure capabilities of the IPVP6, the oil’s shear stability is critical to maintaining the compensation film within the pump.