Electric motors are incredibly versatile, efficient, and reliable devices. A basic electric motor can be put together with things often found around the house, with not much more than a few magnets, a spindle, and some appropriate wire being needed to demonstrate the underlying principle. At the same time, a high-quality electric motor can put in many years of uninterrupted service in highly demanding environments, turning electricity into motion with an efficiency that no other kind of motor can hope to match.
Electric motors do come with some drawbacks, along with some quirks that sometimes need to be worked around. While most of these issues are relatively minor, some basic facts about the electric motor tend to become more significant in certain applications. The traditional electric motor design, for example, is highly capable of producing rotating motion but will not, by itself, produce linear pushes or pulling forces. In many cases, then, an additional assembly must be added to the motor to allow for this kind of output.
In some situations, this proves not to be a major issue, but others present more in the way of challenges. Where space is hard to come by, for example, the most obvious solutions to this problem will often become much less acceptable, meaning that some creative thinking will be required to overcome the associated challenges.
In practice, this mostly means that these gauntlets are most apt to be successfully run by those who specialize in doing so. DC Linear Actuators of impressively small size are, in fact, available on the market, as can be seen at dclinearactuators and similar sites online.
While there are a number of common approaches to turning rotational motion into linear output, most of these micro linear actuators make use of one of a couple. In many cases, a micro linear actuator will use the simple track and micro linear actuators new release rail system that is often seen at larger scales in consumer and industrial devices. In a few others, a screw-drive mechanism will instead be used, particularly in applications where especially high torque has to be accounted for.
Whichever approach they take, actuators of this kind can prove to be highly valuable to those who have a need for them. Instead of those who plan and carry out such projects being confronted with the undeniable challenges inherent in designing such devices, they can simply select a part off the shelf. That makes it much easier for them and others to take advantage of the basic strengths of the electric motor.