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A linear-motion bearing or linear slide is a bearing designed to provide free motion in one direction. There are many different types of linear motion bearings. Motorized linear slides such as machine slides, X-Y tables , roller tables and some dovetail slides are bearings moved by drive mechanisms.
The geometry of the way can vary depending on the situation. The most common types are flat, vee, and dovetail ways. Flat ways are used when there is little requirement for the slide to be constrained perpendicular to the axis of movement, or the constraint is being provided by another component or otherwise not needed, such as on the carriage of a lathe.
With the linear guides, machine tools and industrial robots can perform ultra-precise movements, and devices for manufacturing semiconductors can be operated in the submicron range. [8] In recent times, the linear guides are not only used in mechanical engineering and automation, but also in rail technology, [ 9 ] aerospace, [ 10 ] medical ...
Its first bearing product was a line of self-lubricating bearings; [4] the company also manufactured bushings, thrust bearings, and skid plates, and continued to produce custom parts. By the turn of the century, Pacific Bearing had reciprocal trade agreements with manufacturers in Japan and Europe, expanding the range of products it could offer ...
A ball bearing. A bearing is a machine element that constrains relative motion to only the desired motion and reduces friction between moving parts.The design of the bearing may, for example, provide for free linear movement of the moving part or for free rotation around a fixed axis; or, it may prevent a motion by controlling the vectors of normal forces that bear on the moving parts.
The simplest example of a plain bearing is a shaft rotating in a hole. A simple linear bearing can be a pair of flat surfaces designed to allow motion; e.g., a drawer and the slides it rests on [3] or the ways on the bed of a lathe. Plain bearings, in general, are the least expensive type of bearing.
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