GM3 SERIES

The GM3 Series from SAI Hydraulics is a heavy-duty, high-displacement line of radial piston hydraulic motors engineered for demanding applications that require very high torque, low-speed operation, and maximum durability. These motors are built to handle extreme working conditions while maintaining smooth, efficient performance across a wide range of load and speed conditions.

Product Description

The GM3 Series motors utilize a radial piston configuration with a hydrostatically balanced rotating group, reducing internal friction and allowing for sustained operation under high loads and pressures. The series is designed with a modular construction, offering flexibility in customization, including options for dual displacement, integrated brakes, speed sensing, and additional hydraulic controls.

Key Features

• High displacement capacity for large torque output

• Low-speed performance with smooth, controlled operation

• Hydrostatically balanced rotating group ensures low wear and high efficiency

• Modular design enables configuration with brakes, sensors, valves, and displacement control

• Durable construction suitable for continuous use in severe environments

• Consistent mechanical and volumetric efficiency across all operating ranges

Technical Specifications

• Displacement: Typically ranges from ~800 cc/rev to over 1,600 cc/rev, depending on configuration

• Maximum operating pressure: Up to 450 bar

• Speed range: Optimized for low-speed, high-torque applications

• Torque output: Very high, suitable for direct drive systems

• Mounting options: ISO, SAE, or application-specific flanges

• Shaft types: Keyed, splined, or custom designs

• Optional features: Dual displacement functionality, integrated multi-disc brakes, speed encoders, flushing valves

Applications

The GM3 Series motors are suited for applications where maximum power and rugged performance are required. Typical use cases include:

• Large winches and cable handling systems

• Mining and tunneling machinery

• Marine propulsion and offshore drilling rigs

• Heavy industrial rotary drives

• Hydraulic systems in steel mills, presses, and rolling lines

• Construction equipment such as track drives and rotary drills