Bushing Theory
Bushings are an extremely reliable, efficient, durable, and economical linear motion solution that can be used in an almost never ending list of applications. The format of bushings allows for it to be constructed in a large variety of shapes, sizes, and alternative designs. The bushings typically run on hardened and ground precision steel shafts. In contrast to other linear guides, the design of the bushing allows for an extra degree of freedom that compensates for inaccuracies in a mounting base.
Bushings can be assembled as a linear bushing or as a linear guideway bushing. Linear bushings work independently or as a linear guideway bushing. A linear guideway bushing serves as a mobile mounting platform for other products. Below are examples of the linear bushing and the linear guideway bushing respectively:
The first linear bushing image shows a great concept of how the balls circulate in a constant oval geometry to provide constant motion. Constant circulation of the steel balls create a seemingly friction-less environment for mechanical projects. Minor lubrication may be needed for higher loading projects but this product requires minimal maintenance.
Housings for the bushings may take on many forms, which opens the door for limitless applications.
There are three types of bushings that can be selected: Closed-type, Open-type, and Adjustable linear bushing.
Closed-type bushings are typically used in a specific circumstance where the bore and radial clearance of the bushing is constant.
Open-type bushings are helpful for reducing the amount of deflection on the shaft.
Adjustable linear bushings allow for an adjustable radial clearance of the bushing to the shaft.
Use the naming conventions page as well as the selection page to find out more about the Bosch Rexroth bushings!
