Micro Linear Bearings
Micro Linear Bearings are miniature versions of regular linear bearings that provide accurate linear motion and load-bearing capabilities in a much smaller package. These bearings are designed for use in automation and motion control applications where operating space is limited, such as medical equipment and semiconductor fabrication machines. There are several types of micro linear bearings including linear plain bearings, slide bearings, bushings, and crossed roller bearings. Each of these has its own specific uses and design features, but all Micro Linear Bearings share the same fundamental characteristics.
Linear plain bearings are the simplest and most economical form of Micro Linear Bearing. They typically employ a small number of grooved, deep-grooved, or ball bearings that are held in place by a single housing. They are very accurate and produce low-friction linear motion. Linear plain bearings are available in a variety of sizes and materials, including ceramic, plastic, and steel. These bearings are commonly used in medical machinery and semiconductor machinery.
Slide bearings are composed of two half-bearing housings that fit together and are held in place by multiple small O-rings. This provides an even, low-friction surface that slides over a base plate. Slide bearings are typically used in CNC machines and other precision machinery applications. These bearings are usually made from stainless steel, though some applications may require special materials such as beryllium copper or aluminum-bronze.
Bushings are another type of Micro Linear Bearing. These are usually made of high strength, low friction materials and are designed to allow the bearing to move smoothly and quietly along an axis. Bushings are usually found in robotics and automation applications. Special bushings such as Teflon bushings may also be employed in some applications.
Crossed roller bearings are the most complex and accurate type of Micro Linear Bearing available. These bearings have an internal structure consisting of two sets of rollers that are crossed to each other. This design provides improved rigidity and higher load-bearing capacity than other types of bearings. Crossed roller bearings are used in many precision machinery applications, such as X-radiation crystallization machines. They are also used in many computer numerical control (CNC) machines, linear drives, and robotic systems.
No matter what type of Micro Linear Bearing you need to complete your particular application, you can find them in a variety of sizes and materials available from many suppliers. Be sure to consult your machine designer or engineer to ensure that you get the right bearing for your application. With the right bearing, your application will operate accurately and precisely for a longer period of time.
