Low-Speed, High-Torque Orbital Motors

Orbital motors are hydraulic motors that provide high torque at low speeds.

The overall dimensions of orbital motors are much smaller than other types of hydraulic motors with the same torque. Their compact size makes them easier to integrate into equipment. Their wide speed range, stepless speed adjustment, easy installation, and positioning result in lower costs. Additionally, they are suitable for both open and closed circuits because they offer high starting torque, steady operating speed, and constant working torque.

Operating Principle of Orbital Motors

Orbital motors are similar to pumps in terms of design and operation. The difference is that while pumps use rotational motion to push oil, orbital motors use oil to produce rotational motion. In other words, an orbital motor functions like a pump working in reverse.

Orbital motors consist of key components such as a 6-tooth rotor, a 7-tooth stator, and roller bearings. The internal spur gear, known as the rotor, rotates around the external ring, known as the stator. The hydraulic oil pushes the rotor toward the low-pressure chamber, creating an orbital movement.

Applications of Orbital Motors

In work environments where dirt, dust, mud, and water are present, equipment is subjected to heavy impacts and high levels of vibration. In such situations, equipment requires a motor that can withstand tough conditions. The compact size, high torque, and low speed of orbital motors make them the ideal choice. Thanks to their ability to adapt to harsh conditions, they are preferred in agriculture, mining, and construction machinery, as well as in lifting platforms, road equipment, conveyors, and other industrial machines.

Their high torque makes them the first choice for heavy-duty systems and equipment, while their compact size allows for use in mobile equipment. With orbital motors, mobile equipment is no longer low-performing, heavy, or difficult to control. Moreover, their performance under sudden load increases and their ability to provide controlled movement enhance the safety of the equipment.

Orbital motors can also be used in robotic applications to enable movement. Their high torque and low speed eliminate the need for reducers, saving space, weight, and cost. They are also reversible, can be controlled without the need for brakes, and are resistant to shock loads. Together, these features make them a durable and cost-effective source of motion for robotic applications with high load capacities. Especially in load-carrying robots, as the load increases and torque demands rise, orbital motors become the ideal solution.


orbital motors


Advantages of Orbital Motors:

  ·  High Power in a Small Size: Provides high power despite its compact size.

  ·  Low-Speed Operation: Offers low output speed for controlled and slow operations, ideal for applications requiring precise control.

  ·  High Torque: Produces high lifting and rotational forces due to its high torque output levels.

  ·  Simplified Design: Easy to install and maintain.

  ·  Enhanced Durability: Its design and robust internal structure provide durability even in harsh working conditions.

  ·  High Efficiency: Optimizes performance by converting hydraulic energy into mechanical power with minimal loss.

  ·  Compact and Adaptable: Easily fits into tight spaces and adapts to systems.

  ·  Reliability: Few moving parts and a solid body contribute to stable and reliable performance.


Can Orbital Motors Replace Electric Motors?

While electric motors use AC or DC power, orbital motors generate rotation and torque from oil. Compared to electric motors, they do not require long cable connections, charging times, high-voltage sources, or batteries. They simplify equipment design while offering better performance than electric motors. Orbital motors also eliminate the need for gearboxes to slow down the rotation of electric motors. They are more resistant to shock loads and impacts than electric motors, making them suitable in applications where electric motors are impractical.


Choosing the Right Orbital Motor for Your Application

For efficient and reliable operation over long working hours, the motor must be properly selected. A motor that is too small may overwork and fail prematurely. On the other hand, a motor that is too large may take up too much space, be inefficient, and unnecessarily costly. A properly selected orbital motor will provide long-lasting service with minimal maintenance.

Selecting an orbital motor starts with determining the required torque and speed. The pressure and flow provided by the pump are also important factors. These affect the type and size of bearings used in the motor. An orbital motor should be selected based on the maximum torque (Nm) and pressure (bar) for intermittent and continuous operation. Choosing the right motor requires careful consideration of the operating environment and the pump system (if known or previously installed).


You might be having difficulty choosing among orbital motors with different technical specifications. Do not hesitate to contact our expert team, who can assist you in selecting the most suitable orbital motor for your projects. We are here to provide you with the best solution.