MOTION SYSTEMS HANDBOOK
Linear actuators: Make versus buy
Parker Hannifin’s Hybrid Actuator Systems are high-force self-contained linear actuation. They offer te benefits of electrical actuators and the power density and failsafe characteristics of traditional hydraulics.
With the range of linear actuators on the market, it’s becoming easier for machine builders and end users to find a standard or “customized standard” product that meets even the most unique application requirements. But there are still times when it makes sense, from a financial or technical standpoint, to
LINEAR-ACTUATOR BUSINESS EVALUATION
design and build an actuator in-house.
The first question a company should ask before they embark on making their own linear actuator is: do we have the expertise to do this in-house? Keep in mind that this includes not only the mechanical design, but also sizing and selecting the motor and controls and integrating the system. In many cases, one department or functional area has experience in mechanical
However, the make vs. buy decision isn’t as clear-cut as simply adding up the costs of do-it-yourself components and comparing that to an off-the-shelf solution. Choosing between a homemade actuator and a pre-made one means considering many factors,
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some of which are difficult to quantify in terms of time or dollars. In addition to the technical details of design and assembly, there’s the basic business evaluation of whether it can (and should) be done in-house, and the often-overlooked factor of after-sale support.
DESIGN WORLD — MOTION
Electric Actuators — Motion Control HB 08-19 V3.indd 10
8 • 2019
motioncontroltips.com | designworldonline.com
8/21/19 11:14 AM
