Size really does matter when it comes to direct-drive linear actuators. The smaller the actuator, the more that can be crammed side-by-side into the tight spots normally occupied by pneumatic cylinders or ball screws. But size isn't everything. Force and acceleration capabilities matter too. So does ease-of-installation. Copley Controls has just developed a compact actuator that balances all of these needs. Sized to mount on 28-mm centers, the new ServoTube Model STA11 is the company's most compact direct-drive linear actuator to date. Yet it's no weakling. The STA11, which has an 11-mm thrust rod, offers a peak force of 92N and continuous force of 23.5N. It has maximum velocity of 5.6 m/sec, accelerates instrumentation-type loads to 25g, and provides a 14- to 232-mm stroke. Read more about the new actuator here, including comments from one of the first engineers to use it.
As manufacturers add new technologies to their products, designing for compliance becomes more difficult. Prepare for the certification testing process. Otherwise, you increase the risk of discovering a safety issue after a product leaves the assembly line. That will cause significant time-to-market delays, be much costlier to fix, and damage your brand in the eyes of customers.
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