In heavy-duty applications, the efficiency of your hydraulic system starts with the reliability of your actuators. Whether you are operating agricultural harvesters, construction winches, or industrial conveyors, selecting a high-performance orbital motor is essential for maintaining consistent power under variable loads. At GRH America, we specialize in providing low-speed, high-torque (LSHT) solutions that deliver the rugged durability and precision control required to keep your machinery running at peak performance without the need for bulky gear reducers.

Compact Power and Unmatched Efficiency

The hallmark of our product line is the ability to transmit massive amounts of power from a surprisingly small drive envelope. Our orbital motor design utilizes gerotor and geroller technology to provide high starting torque and smooth rotation even at speeds as low as 15 RPM. This compact footprint allows for seamless integration into cramped spaces on mobile equipment, giving designers more flexibility without sacrificing the mechanical efficiency that GRH is known for globally.

Built for the Toughest Environments

At GRH America, we understand that "downtime" isn't an option. Our motors are engineered to withstand the harshest conditions—from the corrosive salt air of maritime ship deck machinery to the dust and grit of mining and oil drilling sites. Featuring advanced high-pressure shaft seals and robust bearing designs, our motors can handle significant radial and axial loads. This ensures a long service life and reduces the frequency of costly maintenance cycles, making them a cost-effective choice for any hydraulic circuit.

Versatile Solutions for Every Application

No two projects are identical, which is why we offer an extensive range of displacements and mounting options. Our series includes light-duty (GM, GP), medium-duty (GH, GS), and heavy-duty (GT, GV) motors that serve as interchangeable, high-quality replacements for industry standards like Danfoss or Charlynn. With options for speed sensors, special flange connections, and various shaft extensions, GRH America provides the tailored hydraulic solutions that power the world’s leading OEMs.