The Linear Guide is designed to provide free motion in one dimension. Utilizing linear motion bearings, the linear guide provides low-friction linear movement. Most linear guide products use ball bearings, while others find benefits in using dovetail bearings or linear roller bearings.
Ball bearing slides are the most commonly used type of linear guide. The ball bearing linear guide offers smooth precision along a single-axis linear design, assisted by housed ball bearings of the linear guide block, with self lubrication properties that increase reliability.
A linear guide can be constructed from materials such as aluminum, hardened cold rolled steel and galvanized steel. The linear guide consists of two linear rows of ball bearings contained by four rods which are located on different sides of the bearing block. The linear guide ball bearings and rods provide support to the carriage for smooth linear movement along the ball bearings. A linear guide bearing block low-friction linear movement can be powered by either a drive mechanism, inertia or by hand. Linear guide products can be limited to a lower load capacity for their size compared to other linear guide because the balls are less resistant to wear and abrasions.