AZPF-10-016 Bosch Rexroth Replacement | Hydraulic Gear Pump 16cc | 25MPa High Pressure

The AZPF Series (including models AZPF-10-016RQR20 and AZPF-10-016RQR12MB) by Chengyuan Hydraulic is a high-performance external gear pump designed for high-pressure applications. Engineered to be 100% interchangeable with Bosch Rexroth standards, this series provides a robust, lightweight solution without compromising on power density. By utilizing advanced axial gap compensation, the AZPF series maintains exceptional volumetric efficiency throughout its service life. At Chengyuan, every pump undergoes 100% simulated condition testing to guarantee that our products meet the highest reliability and performance standards expected in the global hydraulic market.

Technical Specifications :

• Core Series: AZPF-10-016 (NG16 size)

• Displacement: 16.0 $cm^3/rev$

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

• Peak Pressure: 280 bar (28 MPa / 4060 psi)

• Maximum Speed: 3000 rpm

• Minimum Speed: 500 rpm

• Drive Shaft: Tapered 1:5 (Code Q) or specific Spline/Parallel options

• Mounting Flange: European Standard 2-bolt (80mm Spigot)

• Rotation: Clockwise (R)

• Seal Material: High-grade NBR or Viton (FKM)

Key Technical Advantages:

• Axial Gap Compensation: Features a hydrostatic-bearing design with floating side plates. This mechanism automatically adjusts the clearance based on operating pressure, minimizing internal leakage and maintaining volumetric efficiency above $95\%$ even under high load.

• High-Strength Extruded Aluminum Body: Crafted from specialized high-tensile aluminum alloy with precision machining. This results in an excellent power-to-weight ratio and superior fatigue resistance under alternating pressure cycles while ensuring efficient heat dissipation.

• Low Noise Tooth Profile: The gears utilize an optimized involute profile with ultra-fine grinding. This design reduces pressure ripples caused by trapped oil, ensuring smooth operation across all speed ranges and significantly lower noise levels compared to competitors.

• Heavy-Duty DU Bearings: Equipped with high-performance self-lubricating DU composite bushings. These offer high radial load capacity and, combined with the pressure-lubricated bearing circuit, ensure a stable oil film for extended operational life.

Application Areas:

• Construction Machinery: Auxiliary hydraulic systems for mini-excavators, rollers, and skid steer loaders.

• Agricultural Equipment: Hitch control for tractors and steering/power circuits for harvesters.

• Industrial Power Units: Power source for hydraulic shears, balers, and various medium-to-high pressure HPUs.

Expert Maintenance Tips:

• Initial Priming: Before the first start or after long periods of inactivity, ensure the pump is filled with clean hydraulic oil through the pressure port to prevent dry-start damage to the side plates and bearings.

• Filtration Standards: To maintain the precision of the axial compensation mechanism, fluid cleanliness should be kept at ISO 4406 20/18/15 or better. A $10\mu m$ filtration rating is highly recommended.

• Alignment Check: When installing couplings, ensure the coaxiality deviation between the pump shaft and the motor shaft is within $0.05mm$ to prevent premature shaft seal failure or bearing wear due to radial overload.