These are simple, yet crucial components that are found virtually in all power transmission applications especially gearboxes and motors. On actuators and cylinders, collars act as mechanical stops. On motors
and gearboxes, shaft collars are used as locating components. Another use is keeping bearings
on shafts. Note that shaft collars come in diverse design and you should select the model that best serves your application. One of the common types of collars is the setscrew collar. They are common, easy to install, and cheap. Another common model of collars is the clamp-style shaft collars that use compressive forces to help secure all the components of the shaft without damaging them. They work by distributing the clamping force around the shaft so that it can adjust itself without damages. The clamp-style can be either a one-piece collar or two-piece collar. The two-piece collars help to distribute the forces and develop the strongest hold. The efficiency of the two-piece collars has made them common not just in industrial applications, but also in medical applications. Another new form of collars is the quick-clamping category. Like the clamping style collars, they do not damage the shaft. The main advantage of the quick-clamping is that they are very simple to install. However, they are mainly recommended for light-duty operations such as sprockets. They can also be machined to facilitate mounting of other components.