The core structure of Orbital motors lies in their internally meshed cycloidal gear design, which enables the motors to deliver high torque at low speeds. The types of Orbital motors are various.
1. Main types and characteristics
(1) Shaft-matched flow Orbital motors
Orbital motors are the most common type of Orbital motors. They are characterized by the integral design of the output shaft and the flow distribution mechanism, compact structure, small volume and light weight. These motors are suitable for application scenarios that require high torque output, such as excavators, loaders and other heavy machinery and equipment.
(2) Disk-flow Orbital motors
Orbital motors utilize a disk-type flow distribution structure, which allows the motor to operate stably even under high back pressure. The disk flow distribution design helps to reduce internal leakage and improve volumetric efficiency. These motors are usually used in equipment that requires long time continuous operation, such as the drilling pump drive on the oil drilling platform.
(3) Valve-flow Orbital motors
Valve-flow Orbital motors control the flow of oil through a built-in valve, thus realizing precise regulation of motor speed and torque. These motors excel in applications that require precise control, such as precision machining equipment and automated production lines.
(4) BM series Orbital motors
The BM series Orbital motors are a type of motor designed for high pressure, long term operation. It adopts advanced technologies such as tooth-set stator rotor, rolling shaft support at both ends and special imported rotary seals, which makes the motor still maintain good working performance under high back pressure.BM series motors can completely replace the imported similar products, such as Eaton's J2K and J6K series, and Danfoss' OMP and OMR series.
2. Classified according to the trajectory
(1) Internal pendulum type
The rotor tooth top trajectory is internal pendulum, commonly used in heavy-duty working conditions. For example, Parker Hannifin T series motors are supported by double-row roller bearings, the maximum working pressure can reach 25MPa, and the starting efficiency is more than 92%. Its pressure angle is optimized to 28°, which reduces the radial load.
(2) External Oscillating Linear Type
The motion trajectory presents the characteristics of external pendulum line, and Eaton Char-Lynn 2K series is the representative work. The unique phase compensation design enables the volumetric efficiency to reach 97% and maintains 85% of starting torque in -40℃ low temperature environment. It is nitrided with chromium-molybdenum alloy and has a hardness of HRC62.
The types of Orbital motors are available in a wide variety, and users need to consider the system pressure pulsation characteristics, heat balance capability, and total life cycle cost when selecting them, rather than pursuing a single torque parameter. If you need one, you can visit our website to buy one for yourself.
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