English
P20
Green Hydraulic
P20
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 Parker P20 series is an advanced fixed-displacement gear pump designed as a higher-flow companion to the P16 series. It maintains the proven hybrid three-piece construction—combining a rugged cast iron gear housing with high-strength aluminum flanges and covers. This series is engineered for mobile applications that require a compact envelope but demand higher displacements and heavy-duty performance. With its high power density and excellent efficiency, the P20 is a preferred choice for modern truck-mounted hydraulic systems and vocational vehicles.
Hybrid Three-Piece Architecture:
By utilizing a cast iron center section, the P20 ensures maximum rigidity and maintains tight internal clearances under high pressure. The aluminum end covers significantly reduce overall weight compared to all-cast iron pumps, allowing for higher vehicle payloads.
Extended Displacement Range:
The P20 expands upon the P16 platform, offering larger gear widths and increased flow capacities to handle more demanding hydraulic functions without requiring a significant increase in mounting space.
High Volumetric Efficiency:
Equipped with pressure-balanced wear plates, the P20 minimizes internal leakage. This ensures consistent hydraulic power delivery and high performance even during prolonged periods of high-pressure operation or varying fluid temperatures.
Durable Journal Bearing Design:
The series features heavy-duty journal bushings that provide exceptional support for the gear shafts. This design is highly resistant to fluid contamination and provides a smoother, quieter operation compared to traditional roller bearing pumps.
System Integration Versatility:
Supporting standard SAE "B" mounting interfaces and a wide array of splined and keyed shafts, the P20 is easily integrated into a variety of drive systems. It is available in single, tandem, and specialized "Piggyback" configurations to power multiple hydraulic circuits simultaneously.
| Model | Displacement (cc/rev) | Displacement (in⊃3;/rev) | Max. Pressure (PSI / bar) | Max. Speed (RPM) |
| P20-60 | 19.7 | 1.2 | 3000 / 207 | 3600 |
| P20-90 | 29.5 | 1.8 | 3000 / 207 | 3600 |
| P20-120 | 39.3 | 2.4 | 3000 / 207 | 3600 |
| P20-150 | 49.2 | 3 | 2500 / 172 | 3000 |
| P20-185 | 60.6 | 3.7 | 2250 / 155 | 2800 |
| P20-220 | 72.1 | 4.4 | 2250 / 155 | 2500 |
| P20-250 | 81.9 | 5 | 2000 / 138 | 2500 |
Applications
Medium-Duty Utility Vehicles: A preferred choice for heavy-duty truck cranes, larger aerial platforms, and multi-stage bucket trucks, where the P20’s increased flow capacity supports faster cycle times for lifting and positioning.
Commercial Snow & Ice Removal: Optimized for high-capacity salt spreaders and large plow wings on highway maintenance trucks. Its hybrid construction ensures structural integrity against the heavy shocks and sub-zero temperatures of winter service.
Refuse & Waste Management: Widely used in mid-sized residential garbage trucks for powering bin lifters and secondary compaction circuits that require consistent high-pressure stability and rapid operational cycles.
Industrial Material Handling: Ideal for high-capacity truck tail-lifts, walking floor trailers, and specialized hydraulic ramp systems, providing the extra volume needed to move heavy payloads with precision and speed.
Advanced Agricultural Machinery: Frequently employed in large-scale harvesters, air seeders, and self-propelled sprayers, where the P20 handles the high torque and flow demands of implement steering and fan drive systems in dusty field conditions.
Municipal & Street Cleansing: The primary power source for large-chassis vacuum sweepers and high-pressure street washers, fitting perfectly into the constrained spaces of municipal vehicle frames while delivering maximum power.
P20 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.
Rugged Cast Iron Gear Housing: The center section is made of high-strength cast iron, which prevents "body stretching" and maintains tight internal clearances under high pressure, ensuring a longer service life than all-aluminum designs.
Bushing-Style Performance: It utilizes advanced, pressure-balanced bushings that provide a superior bearing surface. This allows the pump to handle thermal shocks and fluid contamination much better than standard roller-bearing or aluminum-body pumps.
Optimal Power-to-Weight Ratio: By using aluminum end covers with a cast iron body, the P20 provides the strength of a heavy-duty pump while keeping the weight low for mobile applications.
Continuous Pressure: Up to 3,000 PSI (207 bar).
Intermittent/Peak Pressure: Up to 3,500 PSI (241 bar) for smaller displacements.
This performance range is ideal for demanding lifting, compaction, and steering systems on professional-grade vocational vehicles.
Muncie: PH2 Series (as a high-flow alternative to PH1).
Gresen: P20 Series (Parker's direct successor to the original Gresen model).
Permco: P2100 Series.
To ensure a successful swap, always verify the Mounting Flange (SAE B), Shaft Type (13-tooth spline or keyed), and Displacement (cc/rev or Gear Width) to match your current system.
Oil Type: Premium mineral-based hydraulic fluids with robust Anti-Wear (AW) additive packages.
Viscosity: Standard ISO VG32 to VG68. The optimal range is 100 to 150 SUS (20 to 30 cSt), with cold start capabilities up to 7,500 SUS.
Filtration: Cleanliness is critical; a minimum filtration level of ISO 4406 18/16/13 is recommended to protect internal wear plates and bushings.
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.
P20 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.
