A global technology leader, the Parker Hydraulic Pump and Power Systems Division brings nearly two centuries of combined experience. Our division is the result of the Parker piston pump business’s acquisition of Denison Hydraulics and merger with the Parker Oildyne Division and the Parker Electromechanical Drives Division’s (EMD) electric motors and gearboxes.

Since before WWII, Denison products have been excelling in military test stand and shipboard hydraulic applications. This acquisition allowed us to enhance and expand the design, manufacturing and application of open- and closed-circuit piston products into new markets. With the addition of Oildyne, we have extended our offering to include the quality compact hydraulic products and systems the division has been pioneering since 1955. Like the miniature piston pumps Oildyne manufactures, it’s been a smart fit.

With the Summer 2021 addition of electric motors and gearboxes from Parker’s EMD, HPS is focused on the future of both electric and hydraulics solutions. By combining electric motors and hydraulic pumps, highly integrated and versatile electro-hydraulic functions can be created for a wide variety of applications including trucks, buses, and construction equipment vehicles.