If you can’t find a suitable model using the filters, we provide custom external gear pump solutions
Fairydeer external gear pumps are durable and high-performance hydraulic gear pumpsbuilt for tough industrial and mobile applications. Using two precision-cut external gears, thesepumps deliver a smooth, consistent flow with excellent pressure stability. We offer bothaluminum gear pumps for lightweight and corrosion-resistant use, and cast iron gear pumpsfor heavy-duty, high pressure gear pump performance. Designed for **hydraulic power units*construction equipment, and agricultural machinery, our pumps feature low noise, strong wearresistance, and long service life. As a trusted **hydraulic pump manufacturer**, we also supportOEM and custom hydraulic solutions to match your specific system needs.
Fairydeer Hydraulic is a leading hydraulic pump manufacturer in China, specializing in OEM/ODM hydraulic gear pumps.
As a professional gear pump factory, we provide custom solutions, external gear pumps, and replacement pumps for construction, agriculture, industrial, and mobile systems.
We offer OEM manufacturing and factory-direct supply worldwide. Utilizing advanced technology and strict QC, Fairydeer Hydraulic delivers durable, high-efficiency, and cost-effective pumps globally.
Fairydeer Hydraulic is a hydraulic pump manufacturer in China, providing hydraulic gear pumps, OEM hydraulic pumps, ODM hydraulic pumps, and custom hydraulic gear pump solutions. As a top China hydraulic gear pump factory, we supply external gear pumps, aluminum gear pumps, cast iron gear pumps, high-pressure hydraulic gear pumps, and replacement hydraulic pumps for machinery and industrial systems. Our OEM hydraulic pump factory offers custom displacement, custom pressure, custom shafts, custom mounting, and custom ports for all hydraulic applications. We have a professional engineering and technical team of dozens of experienced hydraulic engineers with decades of hydraulic gear pump design and manufacturing experience. Our technical team can provide complete hydraulic gear pump drawings within 48 hours and support rapid prototyping with the fastest sample lead time of 25 days. As a reliable China hydraulic pump supplier, we deliver factory-direct hydraulic gear pumps, custom OEM hydraulic pumps, and high-efficiency hydraulic pump solutions for global customers.
| Item | Cast Iron External Gear Pump | Aluminum Alloy External Gear Pump |
| Material Weight | Heavier structure with excellent rigidity and vibration damping; ideal for heavy-duty industrial systems. | Lightweight body, easy to install and suitable for mobile machinery and compact hydraulic systems. |
| Typical Working Pressure | Designed for high-pressure applications (standard 10–25 MPa, customized up to ~30 MPa). | Suitable for medium and low-pressure hydraulic systems, especially moving equipment. |
| Durability & Wear Resistance | High hardness and strong wear resistance ensure long service life in harsh environments. | Lower hardness and rigidity compared with cast iron; may wear faster under heavy continuous load. |
| Heat Dissipation | Slower heat transfer but stable structure under high pressure and long working cycles. | Excellent thermal conductivity; quickly releases heat, ideal for frequent start-stop or variable-load conditions. |
| Structural Stability | Low deformation rate, strong sealing integrity, minimal vibration and noise. | Higher thermal expansion may affect sealing performance under heavy load or extreme temperature changes. |
| Corrosion Resistance | Requires surface protection in corrosive environments but offers superior long-term strength. | Naturally corrosion-resistant and suitable for humid or outdoor mobile environments. |
| Typical Applications | Industrial automation, construction machinery, mining equipment, fixed hydraulic power units. | Agricultural machinery, forklifts, light construction machines, mobile hydraulic systems. |
| Cost & Maintenance | Higher initial cost but lower lifetime maintenance due to long service life and high reliability. | More cost-effective for lightweight or general-purpose systems; may require more frequent replacement in harsh conditions. |
| Fairy Deer Advantages | Heavy-duty cast iron pumps with strong pressure capability and long-cycle durability for global markets. | Lightweight aluminum pumps optimized for mobile machinery with OEM/ODM customization options. |
| Recommended Choice | Choose Cast Iron for high pressure, long life, stable and heavy-duty industrial applications. | Choose Aluminum Alloy for low-weight, mobile, compact, and medium-pressure hydraulic systems. |
• Rated Pressure: 18 MPa – 25 MPa (2600 psi – 3625 psi), industrial standard operating conditions and heavy-duty requirements
• Peak Pressure: Up to 31.5 MPa (4565 psi), high-pressure hydraulic gear pump
• Material-Specific Pressure: Aluminum hydraulic gear pump (max 25 MPa / 3625 psi), cast iron hydraulic gear pump (max 31.5 MPa / 4565 psi)，
• Application Alignment: 3625 psi+ For construction machinery、mining hydraulic systems
• Core Range: 0.16 cc/rev – 199 cc/rev (0.01 cu in/rev – 12.15 cu in/rev), global popular specifications
• Flow Conversion: 1 GPM – 40 GPM (based on a rated speed of 1800 rpm)
• Customizable Option: Support custom displacement hydraulic gear pump (0.5 cc/rev – 150 cc/rev)
• Material Differentiation: Aluminum pump (0.16 cc/rev – 89 cc/rev), cast iron pump (5 cc/rev – 199 cc/rev)
• Rated Speed: 1500 rpm – 2500 rpm, for industrial hydraulic gear pump
• Maximum Speed: 3000 rpm – 4500 rpm, high-speed hydraulic gear pump
• Minimum Speed: 500 rpm – 700 rpm, low-speed hydraulic system
• Application Adaptation: Agricultural hydraulic gear pump (1500 rpm – 3000 rpm), marine hydraulic pump (1800 rpm – 3600 rpm)
 |
Hydraulic gear pumps designed for CAT excavators, bulldozers, loaders, and mining machinery, delivering reliable hydraulic power for heavy-duty operations. |
 |
Hydraulic gear pumps designed for CAT excavators, bulldozers, loaders, and mining machinery, delivering reliable hydraulic power for heavy-duty operations. |
 |
Hydraulic gear pumps designed for CAT excavators, bulldozers, loaders, and mining machinery, delivering reliable hydraulic power for heavy-duty operations. |
Fairydeer Hydraulic manufactures aluminum alloy hydraulic gear pumps, cast iron hydraulic gear pumps, and high-pressure hydraulic gear pumps (above 25 MPa), along with customizable OEM/ODM hydraulic gear pump solutions for diverse industrial needs.
Yes, we offer personalized customization of pressure rating, displacement range, and speed range to match your construction, mining, agricultural, or marine machinery’s unique requirements.
Our hydraulic gear pumps serve as a high-quality alternative to Bosch Rexroth, Danfoss, and Kawasaki, with up to 75% cost savings while maintaining stable performance and reliable durability.
Our products are designed for construction machinery, mining machinery, agriculture machinery, forestry equipment, roadwork machinery, and marine applications.
We offer fast sample production with a lead time of 7-15 days, enabling quick prototyping and testing for your OEM/ODM projects.
All our hydraulic gear pumps come with a 12-36 month warranty, covering manufacturing defects and ensuring long-term operational reliability.
Focus on three core parameters: pressure rating (1.1-1.5x your system’s max working pressure), displacement (5-10% margin above equipment’s max flow), and speed range (aligned with pump’s rated speed).
Yes, we specialize in high-pressure hydraulic gear pumps (above 25 MPa) engineered to handle rigorous industrial and heavy-duty machinery requirements.
Our engineering team has 20+ years of experience in hydraulic gear pump design, ensuring professional structural optimization and precise customization for your specific needs.
As a digitally managed factory, we support mass production of aluminum alloy, cast iron, and custom hydraulic gear pumps, with efficient global supply chain coordination for timely delivery.
