AS9120B, ISO 9001:2015, and FAA AC 0056B ACCREDITED

Hydraulic Motors: Types and Operating Specifications

Motors devices that are essential to many various applications, capable of transforming one form of energy into mechanical energy that may be harnessed by connected components and systems. There are numerous forms of motors that one may take advantage of, the major difference between each being the type of energy that is transformed. One notable example is the hydraulic motor which utilizes hydraulic pressure to create torque and angular displacement, and it is regularly used as a form of linear actuator. In this blog, we will discuss the hydraulic motor in more detail, allowing you to be more familiar with its basic operations and the subtypes which are available.

As stated before, hydraulic motors utilize hydraulic pressure for their operations, and this pressure comes in the form of compressed hydraulic fluids. With assembly components such as vanes, pistons, or gears, the energy of pressurized fluids can be extracted and transformed into a rotational kinetic energy that is supplied to mechanical devices. With hydraulic motors regularly differing in their exact motor design and operating specifications, it is essential that one has a basic understanding of common options.

Axial piston motors are a popular choice, and they feature axially-mounted pistons to produce their mechanical energy. During operations, the high pressure of fluids will flow into the motor, forcing the piston to adjust within its chamber to create an output torque that can be harnessed. Radial piston hydraulic motors are somewhat similar, featuring pistons that are mounted radially in a pattern around the device’s central axis for mechanical energy to be produced. As hydraulic oil is sent into piston chambers, power will be created in a similar fashion as compared to axial piston assemblies. As pistons are added to a radial configuration, more power can be created through increased displacement per revolution.

In terms of hydraulic motors that utilize gears, internal and external gear configurations are the two main choices. True to their name, internal gear motors feature internal gears that produce torque, and they obtain their energy using pressurized fluids to rotate. External gears are quite similar in function, albeit having the gears situated externally. The final major type of hydraulic motor is the vane variety, and these options utilize vane blades to create mechanical energy as pressurized fluids strike blades and drive the assembly.

Beyond choosing a motor based on the components it uses to create power, you should also determine what operating specifications you may need to keep in mind. For example, operating torques, pressures, speeds, and temperatures may determine whether or not a particular motor is suitable for a need, and falling below or exceeding specifications can lead to issues such as low performance, assembly damage, and more. Aside from such specifications, also be sure to consider things such as power requirements, operating fluid viscosities, motor weights, and more.

If you find yourself interested in procuring hydraulic motor components, look no further than NSN World for all fulfillment. Owned and operated by ASAP Semiconductor, we present customers access to an unrivaled inventory of parts, all of which trace back to top manufacturers from across the globe. Take the time to explore our offerings at your leisure, and be sure to take advantage of our online RFQ forms for the means of requesting quotes for your comparisons on items of interest. With team members working around the clock for customers, you can expect a response within 15 minutes of receiving a completed form. If you have any questions or concerns regarding our services or offerings, be sure to call or email us at your earliest convenience so that we may discuss your needs and how NSN World can meet them as your strategic sourcing partner.


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December 14, 2022

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