This website uses its own and third party cookies to collect information in order to improve our services. If you keep browsing, that implies the acceptance to install them. The user can configures his browser, avoiding to install the cookies in his hard disk, but should be aware that this action may cause difficulties of navigating on the website. How to configure Accept


Rotary limit switch

Rotary limit switch

The rotary limit switch is used to control the movement of industrial machinery. It operates as an auxiliary controller of electrical motors through a power interface, such as a contactor or PLC. Its shaft can be connected to the motor and, after a set number of revolutions, the cams operate the switches, thus starting the predetermined movement.

A worm gear and a helical toothed gear combined with one or more pairs of straight toothed gears are used for the transmission of the movement from the input shaft to the output shaft.

Revolution ratios ranging from 1:15 to 1:150 result from the use of different combinations of gear wheels between the input shaft and the output shaft, which is connected to the cams operating the switches.

Overall dimensions are suitable for assembly in narrow spaces.

Transmission and gear driving shafts are made of stainless steel to prevent oxidation and wear. The gear wheels and the driving bushes are made of self-lubricating techno-polymer material, suitably chosen to reduce the wear to a minimum and to maintain the accuracy of the couplings over time. Sintered bronze bushes are moulded into the base of the limit switch to optimise the shaft rotation and to prevent rubbing with plastic material. Materials and components are wear resistant and protect the equipment against water and dust. The limit switch can be customized with labels and colors.

Each cam can be set with great accuracy thanks to the cam adjusting screws. The auxiliary switches are of the positive opening type.The limit switch is available with direct control switches to operate directly on the motor.