Short Description
Premium factory-direct aftermarket HG Series High-Pressure Internal Gear Pumps (including HG0, HG1, and HG2 configurations), meticulously engineered as 100% interchangeable drop-in alternatives for standard Voith HG and Bosch Rexroth PGH fluid power systems. Delivering maximum continuous pressures up to 315 bar with near-zero flow pulsation, these fixed-displacement internal gear pumps are the premier choice for modern servo-driven injection molding machines, hydraulic presses, and heavy industrial power packs.
Key Highlights
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100% Drop-In Global Compatibility: Fully compliant with standard SAE or ISO 2-bolt mounting flanges and cylindrical keyed/splined shafts. Replaces original factory lines seamlessly without modifying structural industrial framing or heavy piping circuits.
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Radical Noise Reduction (Low-Acoustic Tech): Utilizing advanced internal spur gear and sealing-gap compensation technologies. It operates far quieter than traditional external gear pumps, making it the perfect match for indoor eco-friendly manufacturing facilities.
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Radial & Axial Pressure Compensation: Designed with floating internal sealing segments that adapt dynamically under high pressures. This optimizes volumetric efficiency, keeps inner heat generation extremely low, and stabilizes flow output even during continuous 300+ bar holding cycles.
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Perfect for Servo-Driven Systems: Features excellent low-speed and start-up characteristics, seamlessly tracking variable-speed servo motors from 0 to 3000 RPM, which drastically slashes factory power consumption when running complex machine sequences.
Technical Parameters Matrix
| Pump Frame Size | Displacement Range (ml/rev) | Max Cont. Pressure (bar) | Max Speed Range (rpm) |
|---|---|---|---|
| HG0 Series | 8.0 / 10.0 / 13.0 / 16.0 | Up to 315 bar | 3000 |
| HG1 Series | 20.0 / 25.0 / 32.0 / 40.0 | Up to 315 bar | 3000 |
| HG2 Series | 50.0 / 63.0 / 80.0 / 100.0 | Up to 250 bar | 2500 |
| Fluid Compatibility | Standard Mineral-Based Hydraulic Oils / HLP Fluids | ||
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Haozheng Hydraulic Production Processing Diagram
Haozheng Hydraulic Honorary Certificate
Exhibition
FAQ
Q1: Can your HG gear pump replace a Voith HG1-25 or a Rexroth PGH4 series internal gear pump? A: Yes, perfectly. Our HG industrial internal gear pump series is explicitly engineered to follow international standard mounting footprints, keyways, and port configurations. If your existing pump tag says HG1-25-X-X or matches standard PGH dimensions, our unit drops in as a direct 100% interchangeable replacement.
Q2: Does this internal gear pump support combination / multiple-pump mounting? A: Absolutely. Our HG series supports through-drive configurations. We can factory-assemble dual or triple pump setups (e.g., HG+HG, or HG+Piston pump combos) to meet custom industrial multi-circuit design mandates. Please consult our technical desk when specifying your combination code.
