Rocker vs Rotary Cam Limit Switches
In order to specify mechanical limit switches successfully and avoid premature failure, it is important to select the appropriate actuation method for your application. In the article, we will explain the 2 main types of mechanical limit switches, how they operate and wat to consider when selecting for your application.
Types of Industrial Limit Switches
There are several categories or classifications of industrial limit switches on the market. The most common types of limit switches are mechanical limit switches, non-contact proximity switches, and photoelectric switches. Mechanical limit switches are suitable for the vast majority of applications and are generally the most economical to use. Therefore, the mechanical limit switch is typically the first choice.
How Does a Mechanical Limit Switch Work?
Mechanical limit switches operate based on two types of working principle, the cam-type, and the rocker-type. In a rotary cam limit switch, a cam engages the limit switch lever or plunger, which makes or breaks an electrical contact inside the limit switch. In a rocker-type limit switch, rotation of the external lever shaft and lever shaft assembly causes the rocker to pivot, shifting and locking the latches.
It is essential to learn more about how rocker-type and rotary cam limit switches operate and which suits your application best. Experience has shown that most industrial limit switch failures occur due to faulty installation. In some cases, a perfect installation is not possible, but in the majority of cases, proper application of the limit switch would have prevented failure.