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Help CenterHELNCO Gear Pump GR33 Compact Hydraulic Gear Pump
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As a trusted supplier from Rossonix Co., Limited (established in 2011, ISO9001 certified), we are proud to present the HELNCO Gear Pump GR33 – a compact yet powerful hydraulic gear pump designed for demanding industrial applications. Our pump delivers reliable performance in a space-saving package, making it an ideal choice for OEMs, machinery integrators, and maintenance teams looking for consistent fluid power. With over a decade of export experience and annual overseas sales of US$5–10 million, we ensure every unit meets rigorous quality standards.
The GR33 model features precision-machined gears and robust housing to handle high-pressure fluid transfer with minimal leakage. Its compact footprint allows easy installation in tight spaces without sacrificing output. Below we break down the key features, technical specifications, and benefits that make this pump a reliable workhorse in your hydraulic system.
Key Features & Benefits
Compact Design – Saves valuable installation space while delivering high volumetric efficiency.
High Pressure Capability – Operates reliably up to 25 MPa (pressure rating customizable per request).
Durable Construction – Made from high-strength cast iron with hardened gears for extended service life.
Low Noise Operation – Optimized gear profile reduces pulsation and operational noise.
Wide Viscosity Range – Compatible with mineral oils, synthetic fluids, and biodegradable hydraulic oils.
Flexible Mounting – Available with flange or shaft options to suit different pump drives.
Easy Maintenance – Simple design allows quick replacement of wear parts if needed.
ISO Certified Quality – Manufactured under ISO9001 management system (certificate available upon request).
Technical Specifications
| Parameter | Value |
| Model | GR33 |
| Displacement (cm³/rev) | Customizable (e.g., 8, 12, 16, 20, 25) |
| Max Continuous Pressure | 25 MPa (3600 psi) |
| Max Intermittent Pressure | 28 MPa (4060 psi) |
| Max Speed (rpm) | 3000 |
| Min Speed (rpm) | 600 |
| Fluid Viscosity Range | 10–500 cSt |
| Max Temperature | 80°C (176°F) |
| Mounting Options | Flange (SAE A/B) / Shaft (keyed or spline) |
| Weight (approx.) | 2.5 kg (5.5 lb) |
The GR33 pump is designed for a wide range of applications including agricultural machinery, construction equipment, material handling systems, and industrial hydraulic power units. Its compact size does not compromise flow stability – the pump delivers smooth, low-pulsation output even at elevated pressures. Customers benefit from reduced downtime and lower total cost of ownership thanks to the robust design and easy serviceability.
We also offer customization options: different displacement volumes, shaft types, and port configurations can be produced to match your specific system requirements. Please contact our sales team for detailed drawings and technical support.
Why Choose Rossonix Co., Limited?
With over 12 years of experience in hydraulic components trading, we have built a reliable supply chain serving customers across North America, South America, Europe, Oceania, the Middle East, and Asia. Our ISO9001 certified quality management system ensures consistent product performance. We ship from Shenzhen, Hong Kong, and European warehouses, providing fast delivery to global markets. Our annual export value of US$5–10 million reflects the trust our clients place in us. Every GR33 pump is individually tested before shipment, and we offer comprehensive after-sales support. Contact us today to discuss your hydraulic needs and request a quotation or sample.
Frequently Asked Questions
Q: What fluids can the GR33 pump handle?
A: The pump is compatible with mineral-based hydraulic oils, synthetic esters, and biodegradable fluids within a viscosity range of 10–500 cSt. Always confirm fluid compatibility with our technical team for extreme conditions.Q: Can the pump be mounted in any orientation?
A: Yes, the GR33 can be installed in any position (horizontal, vertical, or inclined). Ensure adequate oil level above the inlet port for proper priming.Q: What is the expected service life?
A: Under normal operating conditions (clean fluid, correct viscosity, and within rated pressure), the pump can operate for thousands of hours. Regular oil changes and filtration extend life significantly.Q: Do you offer custom shaft or flange designs?
A: Yes, we can provide custom shaft lengths, keyways, splines, and SAE flanges per your drawings. Minimum order quantities may apply.Q: How do I select the right displacement for my system?
A: Displacement depends on your required flow rate and motor speed. Use the formula: Flow (L/min) = Displacement (cm³/rev) × Speed (rpm) / 1000. Our engineers can help you calculate.Q: Is the pump reversible?
A: The standard GR33 is unidirectional. For reversible applications, please inquire about our bi-directional versions.Q: What certifications are available?
A: Our manufacturing facility is ISO9001 certified. Individual product certificates (e.g., material test reports) can be provided upon request.Q: What is the lead time for bulk orders?
A: For standard models, lead time is typically 15–25 working days. Custom orders may require 30–40 days. We keep stock for popular displacements.
Ready to upgrade your hydraulic system with a reliable compact pump? Contact Rossonix Co., Limited for a competitive quote and expert guidance.
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