Parker D27AA2A Hydraulic Gear Pump 5 Gpm Sae Aa Mount

Product Description

The PARKER D27AA2A is a hydraulic gear pump designed for mobile and industrial fluid power systems. It delivers 4.99 GPM at 1,800 RPM and 9.99 GPM at 3,600 RPM, with a rated output of approximately 5 GPM at 2,000 RPM. Maximum working pressure is 2,000 psi. The pump uses an SAE AA mount configuration and accepts a 1/2 inch shaft. Inlet and port connections are 7/8-14 UNF-2B SAE. The aluminum housing keeps weight low at 3 pounds, making it suitable for compact hydraulic circuit installations. Licensed hydraulic system technicians and fluid power specialists are the primary installers.

The D27AA2A is suited for light-duty hydraulic systems on compact equipment, small industrial machinery, and mobile platforms requiring a reliable fixed-displacement gear pump. Its SAE AA mounting pattern fits standard auxiliary pump pads on small engines and PTOs. The operating temperature range of -40 degrees F to 185 degrees F supports both cold-start and continuous-duty applications. At 0.641 cubic inches per revolution displacement, it is sized for systems that prioritize flow efficiency in a small envelope.

Key Features

• Delivers 4.99 GPM at 1,800 RPM and 9.99 GPM at 3,600 RPM for flexible speed-range operation
• 2,000 psi maximum working pressure for light to medium hydraulic circuit demands
• SAE AA mount with 7/8-14 UNF-2B SAE port threading for direct OEM-style installation
• 0.641 cubic inches per revolution fixed displacement for predictable flow output
• Aluminum housing reduces overall system weight at 3 pounds installed
• Wide temperature range from -40 degrees F to 185 degrees F supports year-round operation

Compatibility

Designed as an OEM-style replacement or direct-fit gear pump for hydraulic systems requiring an SAE AA mount, 1/2 inch shaft diameter, and 7/8-14 UNF-2B SAE port connections at up to 2,000 psi working pressure.

Installation Notes

Installation should be performed by a qualified fluid power technician or hydraulic systems specialist. Depressurize and lock out the hydraulic system fully before removing or installing the pump. Ensure shaft alignment with the drive coupling before final mounting to avoid premature bearing wear. Follow applicable fluid power standards and equipment manufacturer guidelines for torque and plumbing practices.