SAI Hydraulics
High-Performance Radial Piston Motors and Wheel Drive Solutions
SAI Hydraulics has designed and manufactured hydraulic motors since 1964, building a reputation for radial piston technology that delivers high starting torque, strong volumetric efficiency, and resistance to contamination and thermal shock. From compact fixed-displacement motors to advanced dual and variable displacement designs, SAI’s product range covers the full spectrum of mobile and industrial hydraulic drive requirements.
SAI’s motors are built around a radial piston and crankshaft architecture, with fixed, dual, and variable displacement options spanning from small compact units up to 10,000 cc/rev. This breadth lets engineers match motor selection precisely to torque, speed, and packaging requirements without over-specifying the component.
Engineered for Efficiency Across the Full Operating Range
One of the defining strengths of SAI’s variable and dual displacement motors is the ability to shift displacement while the machine is running, using either hydraulic or electric control. This keeps the motor operating near peak efficiency across a wide range of speeds and loads, rather than forcing a single fixed-displacement compromise.
SAI’s variable displacement motors integrate an electronic control system directly with the motor, allowing continuous displacement variation down to zero from any maximum displacement point. For circuits with wide operating ranges, this reduces heat generation, improves response, and extends component life. Beyond motors, SAI’s line includes planetary gearboxes, wheel drive assemblies that combine motor, gearbox, and brake into a single compact unit, and rotary manifolds for swivel and rotating equipment applications.
Built for Demanding Mobile and Industrial Applications
SAI hydraulic motors and wheel drives are trusted across agriculture, forestry, construction, mining, marine, and drilling equipment, along with a wide range of industrial and multipurpose machinery. Their combination of high starting torque, compact envelope, and displacement flexibility makes them well suited to propel drives, winches, augers, and other high-torque, variable-speed applications where reliability under contamination and thermal cycling matters most.
SAI’s engineering approach, refined over decades of focused development, emphasizes serviceability alongside performance. Interchangeable distributors and a modular parts structure help keep downtime low when maintenance is needed in the field.
Call to place an order. Rapid, same-day shipment. Warehouses located in the Southeast and Northwest for quick and cost-effective delivery. Customer service available to speak with 12 hours a day.
Call to place an order.
Rapid, same-day shipment Warehouses located in the Southeast and Northwest for quick & cost-effective delivery Customer Service available to speak with 12 hours a day.
Hydra-Power Systems: Your Source for SAI Hydraulics Products
Hydra-Power Systems stocks and distributes SAI Hydraulics’ full line of radial piston motors, planetary gearboxes, wheel drives, and rotary manifolds. Whether you’re specifying a fixed-displacement motor for a straightforward drive application or a variable displacement unit with integrated electronic control for a demanding, wide-range circuit, our team can help match the right SAI component to your system.
With years of experience in fluid power systems, we offer expert guidance to make sure you get the right components for your specific application, whether you’re replacing a part or designing a new hydraulic system from the ground up.
Learn more about SAI’s hydraulic motor technology by reaching out to Hydra-Power Systems for personal assistance and fast, reliable service.
We are a preferred distributor for most of the world’s
largest and trusted suppliers.
Call to place an order.
Rapid, same-day shipment Warehouses located in the Southeast and Northwest for quick & cost-effective delivery Customer Service available to speak with 12 hours a day.