GR & G Series Helical Gear Pump | GR28, GR38, GR55, GR72 | G28V006F1C3GD, G380C025F2AC4QD Silent Pump

GR & G Series Ultra-Low Noise High-Pressure Helical Gear Pumps

Product Overview: The GR and G Series are synonymous with “silent power” in the global hydraulic sector. This comprehensive selection spans the full displacement spectrum, featuring GR28, GR33, GR38, GR47, GR55, and GR72, alongside high-performance configurations G28V006F1C3GD and G380C025F2AC4QD. Utilizing a unique helical gear (screw-type meshing) design, these pumps eliminate fluid trapping and pressure ripples common in traditional gear pumps. Even at high pressures of 25 MPa, they maintain exceptionally low noise levels, making them the premier choice for high-end injection molding machines, stage lifts, medical equipment, and servo-hydraulic systems.

Key Technical Advantages:

• Ultimate Silence (Continuum® Tech): Based on the continuous helical meshing principle, operating decibels are reduced by 15-20 dB compared to standard pumps, eliminating high-frequency whistling.

• Zero Pulsation Output: The helical tooth profile ensures continuous flow, resulting in near-zero pressure ripples, which significantly enhances system stability and control precision.

• Elite High-Pressure Capability: The reinforced architecture supports continuous operating pressures up to 250 Bar (3625 PSI) with exceptional fatigue resistance.

• Superior Volumetric Efficiency: Features precision axial pressure compensation to maintain over 94% efficiency across the full pressure range, minimizing energy loss and oil heating.

• Extended Life & Low Maintenance: Continuous meshing reduces impact stress between gears, drastically lowering mechanical wear and extending service intervals.

Detailed Models & Parameters:

• Core Series: GR & G Silent Helical Series.

• Model Keywords: GR28, GR33, GR38, GR47, GR55, GR72, G28V006F1C3GD, G380C025F2AC4QD.

• Displacement Range: 6 cm³/rev to 72 cm³/rev (Spanning micro to mid-large capacities).

• Pressure Ratings: Rated at 20 MPa – 25 MPa (2900 – 3625 PSI) continuous.

• Mounting Specs: F1C3GD (Standard Flange); F2AC4QD (Specific Servo Interface).

• Target Applications: Servo Power Units (SPU), precision machine tools, stage lift hydraulics, IMM auxiliary pumps, and medical lifting devices.