GXP Series External Gear Pump | GXP10-COC80WBTB63ABL-20 GXP05 | High Pressure

The GXP Series External Gear Pump, including specialized models such as GXP10-COC80WBTB63ABL-20 and GXP05-B1B63ABR-20, is a high-performance hydraulic power unit manufactured by Chengyuan Hydraulic. Engineered for precision and durability, this series is a staple in industrial automation and mobile hydraulic sectors. We pride ourselves on the 100% Interchangeability of our pumps, allowing them to replace original international brands seamlessly. Every unit undergoes 100% simulation load testing on our digital test benches to guarantee volumetric efficiency and mechanical integrity under high-pressure conditions before shipment.

Technical Specifications 

• Series: GXP External Gear Pump

• Specific Models: GXP10-COC80WBTB63ABL-20 / GXP05-B1B63ABR-20 / GXP05-A0C52/45ABR-20

• Displacement Range: 0.5 cc/rev to 10.0 cc/rev

• Rated Operating Pressure: 21 MPa (210 bar / 3045 psi)

• Peak Pressure: 25 MPa (250 bar / 3625 psi)

• Max Speed: 3500 – 4000 rpm

• Control Method: Fixed Displacement

• Mounting Standard: European Standard Flange and Shaft (e.g., B63AB)

• Rotation: R (Clockwise) or L (Counter-clockwise)

• Net Weight: Approx. 1.2 kg to 3.5 kg

Key Technical Advantages:

• Axial Clearance Compensation: Features a floating side-plate design that utilizes hydraulic pressure for automatic clearance adjustment, maintaining over 90% volumetric efficiency even at high pressures.

• Precision Honed Gears: Built with high-grade alloy steel that is vacuum carburized and hardened. Precision gear-grinding ensures minimal noise and reduced pressure pulsation during operation.

• DU Self-Lubricating Bearings: Equipped with heavy-duty DU composite bushings that offer high load-bearing capacity and fatigue resistance, significantly extending service life under high-speed conditions.

• High-Strength Aluminum Housing: The extruded aluminum body provides excellent heat dissipation and structural rigidity while reducing overall system weight.

Application Areas:

• Hydraulic Power Packs (HPU): Ideal for lifts, material handling equipment, and compact presses.

• Agricultural Machinery: Suitable for tractor pilot systems and auxiliary seeder circuits.

• Industrial Machine Tools: Used for lubrication, cooling cycles, and automated fixture control.

• Mobile Vehicles: Auxiliary steering systems for sweepers and specialty truck chassis.

Expert Maintenance Tips:

• Fluid Cleanliness: Maintain fluid quality at ISO 4406 19/17/14 or better. Use a suction filter with a rating of $\le 20\mu m$ to protect precision gear surfaces.

• Priming Requirement: To prevent dry-run damage, fill the pump housing with clean hydraulic fluid via the ports before the initial startup.

• Rotation Check: Ensure the drive rotation matches the pump’s directional arrow (L or R). Running the pump in reverse will cause immediate shaft seal failure and internal galling.