- Home
- Hydraulic
- Application
- Download
- Why Green
- Support
- Contact Us
English
Please Choose Your Language
HGP-4A
Green Hydraulic
HGP-4A
Standard export carton/plywood case
Yes
ISO9001，CE
• Industrial • Energy • Government (Non Aerospace) • HVAC • Mobile • Natural Resources • Transportation (Non Aerospace)
1. Industrial Hydraulic Systems 2. Mobile Equipment (Industrial Vehicles) 3. Construction and Engineering Machinery 4. Metallurgy Industry
Key Shaft and Spline shaft
1 set
Product Description
The HGP-4A is a high-performance, fixed-displacement external gear pump engineered for compact hydraulic systems that demand reliable high-pressure output and consistent efficiency. Featuring a robust aluminum alloy construction, the HGP-4A delivers an exceptional power-to-weight ratio, making it an ideal choice for direct mounting to truck Power Take-Offs (PTOs) and space-constrained industrial or mobile equipment applications where durability and performance are non-negotiable.
Rugged High-Strength Aluminum Construction:
Specifications
| Parameter | Value |
| Pump Type | Fixed Displacement External Gear Pump |
| Construction Material | High-tensile aluminum alloy body + cast iron/steel gears |
| Mounting Style | SAE 2-bolt flange / foot mounting (optional) |
| Shaft Options | Straight, spline, or taper shafts |
| Rotation | Clockwise (CW) / Counter-clockwise (CCW) |
| Weight | ~4.1–6.5 kg (varies by displacement) |
Applications
Applications
Utility & Service Vehicles: A primary choice for truck-mounted cranes, aerial lifts, and bucket trucks, where the compact HGP-4A frame integrates seamlessly with Power Take-Off (PTO) units to deliver stable lifting and positioning power.
Snow & Ice Control: Optimized for salt spreaders and small plow systems, with durable construction that ensures long-term reliability against corrosive environments and high-frequency winter operation cycles.
Commercial Refuse & Recycling: Widely used in small-frame garbage collectors and waste bin lifters, offering the high-cycle, high-pressure stability needed for rapid compaction and unloading operations.
Small Material Handling: Ideal for truck tail-lifts, hydraulic ramp systems, and electric pallet jacks, providing a space-efficient, durable power source that maintains high efficiency under heavy load conditions.
Specialized Agricultural Equipment: Frequently employed in seeders, fertilizer spreaders, and implement steering systems, where the HGP-4A handles variable load shocks and fluid contamination common in outdoor field environments.
Industrial Hydraulic Systems: Suitable for compact machine tools, hydraulic presses, and conveyor systems, delivering consistent high-pressure flow for demanding industrial cycles.
Factory&FAQ
HGP-4A pumps are typically packaged securely to prevent damage during transit. The packaging includes:
Protective Wrapping: To safeguard the pump from environmental damage.
Custom Crates: For larger, heavier pumps, ensuring safe handling.
Documentation: Includes installation, maintenance instructions, and warranty details.
Delivery time depends on the model, customizations, and location but typically ranges from 2 to 6 weeks from the order date.
Lightweight High-Strength Construction: Its precision-cast aluminum alloy body offers an excellent power-to-weight ratio, reducing overall system weight while maintaining structural rigidity under pressure.
Pressure-Balanced Bushing Design: Utilizes advanced journal bearings instead of traditional roller bearings, providing superior resistance to fluid contamination and thermal shock for longer service life.
Flexible Installation Options: Supports multiple shaft configurations (straight, spline, taper) and port orientations, offering greater adaptability to cramped chassis environments than basic single-port pump designs.
Low-Noise Operation: Precision gear machining and optimized flow paths minimize pulsation, delivering quieter performance suitable for both mobile and indoor industrial applications.
The HGP-4A is engineered for high-pressure compact systems. Depending on displacement:
Continuous Working Pressure: Up to 250 bar (3,625 PSI).
Intermittent/Peak Pressure: Up to 300 bar (4,350 PSI).
This robust rating makes it ideal for powering lifting, compaction, and heavy-duty actuation systems on utility vehicles and industrial machinery.
Yes, the HGP-4A is a versatile, cost-effective alternative to many standard compact gear pumps. It is commonly used as a direct replacement or upgrade for:
Parker PGP Series pumps.
Vickers G2/G5 Series pumps.
Nachi IPH Series pumps.
To ensure a successful swap, verify the Mounting Flange (SAE “A” or “B”), Shaft Type (spline/tooth count), and Displacement (cc/rev) to match your existing system specifications.
To protect the pump’s precision bushings and hardened steel gears, the following is recommended:
Oil Type: Premium mineral-based hydraulic fluids with strong anti-wear (AW) and anti-foam additive packages.
Viscosity: Standard ISO VG32 to VG68. The optimal operating range is 20–100 cSt (100–500 SUS), though it can handle cold starts up to 430 cSt (2,000 SUS).
Filtration: Cleanliness is critical for bushing and gear protection. A minimum filtration rating of ISO 4406 18/16/13 is recommended to prevent abrasive particles from damaging internal components.
The HGP-4A series operates efficiently across a wide speed range, typically:
Rated Operating Speed: 600–3,000 RPM.
Maximum Intermittent Speed: Up to 3,500 RPM (depending on displacement and pressure conditions).
Operating within this range ensures optimal volumetric efficiency and minimizes wear on the pump’s internal components.
Yes, we support OEM and customization, including nameplate, packaging, and specific performance requirements. Send us your drawings or specifications for evaluation.
Please provide the following details:
Model or displacement
Working pressure
Speed
Quantity
We will reply within 12 hours with a competitive quotation.
HGP-4A pumps are manufactured in compliance with international standards, ensuring high performance and reliability:
ISO 9001: Certified for quality management systems.
CE Certification: Ensures compliance with European safety, health, and environmental protection standards.
RoHS Compliance: Ensures the pump does not contain hazardous materials.
Factory Testing: Every pump is rigorously tested for performance, pressure, and leak integrity before shipping.
The pump's flow is adjusted by changing the angle of an internal swash plate. As the swash plate angle changes, the stroke length of the pistons varies, which in turn changes the volume of fluid displaced per rotation, allowing the flow rate to adapt to the system's needs.
Factory established in 2005;
With a great deal of production experience;
80+ employees become the professional team;
Constant updated ERP system ensure efficiency of work;
Sophisticated equipment ehanced the accuracy of products;
Professional salesmen provide the greast service;
With a large number of famous customers all over the world;
Great after-sales service;
With the long term cooperation with famous logistics and express company in China,provide the better goods service.
Small order/sample order,full payment in advance; Big orders send the first payment 30% before the production,and the balance before shippment.We'll show the photos of the products and packages before delivery.
Of course we can. Just send me your logo we can make it for you.
America(40.5%):USA, Canada, Argentina, Brazil
Europe(30.8%):Italy,Germany,England,Holland,Spain,Swiss,Finland,Russia,Poland.
Asia(23.5%):Korea,singapore,India,Turkey,Vietnam,Saudi Arabia,Syria, Israel,Lebanon.
Others(5.8%).
The Green hydraulic pump manufacturing facility is a specialized industrial plant that focuses on producing hydraulic pumps and related components. These factories are equipped with advanced machinery and technology to fabricate high-quality pumps designed for a wide range of applications, from heavy equipment and machinery to automotive and industrial systems.
The production process typically involves precision engineering, where raw materials like metals and alloys are processed into pump components such as gears, pistons, cylinders, and seals. These parts are then assembled into fully functional hydraulic pumps, which are tested for performance and quality control to ensure reliability, efficiency, and durability under various working conditions.
Green Hydraulic's manufacturing facilities for hydraulic pumps maintain stringent quality standards, often adhering to international certifications, to meet the expectations of customers in industries such as construction, agriculture, automotive, and manufacturing.
All hydraulic pumps produced by Green Hydraulic have undergone compliance testing, ensuring their quality and reliability.
To meet the diverse needs of different industries, the green hydraulic offer customization options, such as specialized seals, materials, and pump configurations. These facilities often work closely with engineering teams to develop tailored solutions for specific applications, from high-pressure systems to low-flow, high-efficiency pumps.
Each pump undergoes a rigorous quality control process, where pressure tests and performance assessments are conducted to ensure that the pumps meet the required standards for flow rate, pressure capacity, and durability.
