The Bulletin 803-NK35 rotating cam limit switch by Allen Bradley is a heavy-duty control circuit piece of equipment used with industrial machines that incorporate a repetitive cycle of continuous operations, wherein the given motion is correlated to the shaft rotation. The Bulletin 803-NK35 rotating cam limit switch is designed to ensuring heavy-duty resilience and a longer life when functioning in industrial operations. These devices are available in 6 different styles that come with a myriad of modifications and options available towards meeting a diverse range of specific applications. The 803-NK35 rotating cam limit switch is used as a specialized device, applied for the initiation of the contact actuation at certain positions during the process of shaft rotation. The switch operates by rotating well in either direction, even when mounted in any given plane. All the specific styles of the 803-NK35 rotating cam limit switches make use of the cams that are mounted on the shaft. As the shaft starts rotating, the cam switches actuate the given contacts.

Bulletin 803-NK35 rotating cam limit switches of all different types have the same overall mechanical structure; the 803-NK35 switch device consists of a rotating shaft, 2 to 12 circuits with a snap-action contact block assembly or a cam-opened contact assembly, 2 to 12 cam assemblies containing 2 adjustable cam segments for each cam, and a spring-loaded cam-roller assembly that comes mounted to the contact base. While installing the 803-NK35 rotating cam limit switch, attention should be given to the specific internal and external adjustments. Styles A, B, & P come with internal dwell & timing adjustments, while styles E & EF have internal dwell adjustments. Both internal dwell and timing adjustments must be made when the equipment is not moving. When the cams are set in a proper position, the user will be able to tighten the cam bolts & install the cover. In terms of the external adjustment, Style F comes with external dwell & timing adjustments. Both of these adjustments can be made when the device is still in motion.