Casappa AP Series Gear Pump | AP200/22 S 259 & AP200/22 D 880 | AP100 AP300

LIC Hydraulic is proud to supply the Casappa AP Series, a high-performance external gear pump range known for its legendary durability and efficiency. Covering Group 1, 2, and 3 frame sizes (AP100, AP200, and AP300), this series is the go-to solution for mobile and industrial applications requiring high working pressures in a lightweight package. Models such as the AP200/22 S 259 (Single) and the tandem AP200/22 D 880 exemplify Casappa’s commitment to modularity and precision. Constructed with high-strength aluminum bodies and cast-iron covers, these pumps handle continuous pressures up to $250\text{ bar}$ ($3625\text{ PSI}$) with ease.

Technical Specifications (Bulleted List)

• Series: Casappa AP Series (Modular Gear Pumps)

• Displacements: $1.0\text{ cc/rev}$ (AP100) to $91.1\text{ cc/rev}$ (AP300).

• Max Pressure: Continuous $250\text{ bar}$, Peak up to $300\text{ bar}$.

• Materials: High-tensile extruded aluminum alloy body with cast-iron end caps.

• Efficiency: Precision pressure-balanced bushings ensure high volumetric and mechanical efficiency.

• Configurations: Available as single pumps, multiple pumps, and with various shaft/flange options (SAE, European, German standards).

Key Technical Advantages

• Pressure-Balanced Design: Advanced axial compensation bushings minimize internal leakage, ensuring consistent flow even as system temperature and pressure rise.

• Exceptional Power-to-Weight Ratio: The aluminum body significantly reduces machine weight while providing the structural integrity needed for high-duty cycles.

• Customizable Tandem Pumps: The AP series allows for the assembly of multiple stages (e.g., mixing AP200 and AP100 sections) to power separate hydraulic circuits from a single engine takeoff.

• Advanced Gear Profile: Engineered to reduce flow ripple and noise vibration (NVH), resulting in a quieter operation and longer life for downstream valves and seals.

Application Areas

• Construction Machinery: Steering pumps for loaders, pilot pressure pumps for excavators.

• Logistics: Main hydraulic pumps for high-capacity forklifts and reach stackers.

• Agricultural Technology: Powering hitch systems and auxiliary hydraulic tools on modern tractors.

Expert Maintenance Tips

• Case Priming: Before the initial startup, always prime the pump with clean hydraulic fluid. Dry starts are the leading cause of internal galling on the aluminum housing.

• Seal Integrity: Periodically check the shaft seal for signs of weeping. If the pump is part of a tandem assembly, ensure the intermediate seals are intact to prevent cross-contamination of different hydraulic circuits.

• System Filtration: For maximum service life at high pressures, use a return-line filter rated at $10\text{–}25\text{ microns}$ absolute to keep the gear set free from abrasive wear particles.