Heavy Duty Rotary Geared Limit Switches are used in the control circuits of reversing drives to restrict their rotation or movement to a pre-set position. The purpose of the limit switch is to stop the mechanism at the extreme forward or reverse positions. These switches are available in various combinations and are fully enclosed with an IP-55 protection rating, featuring both normally open (N.O.) and normally closed (N.C.) contact configurations.
Available gear ratios include 48:1 and 60:1.
Applications:
Rotary Gate-type limit switches are ideal for use in reversing drives, such as hoists, winches, rolling mills, and other mechanisms found in steel plants, including coke ovens and feeding machinery.
Construction:
The rotary geared limit switch consists of a heavy-duty worm gear drive. The worm gear unit is housed within a metal casing, which is attached to the main body of the switch. The cam shaft, extending from the rear of the gear, passes through the housing and supports adjustable cam actuators. These actuators strike the contact fingers of the respective contacts when triggered.