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2. Linear-motion bearing - Wikipedia

   en.wikipedia.org/wiki/Linear-motion_bearing

   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.

3. Way (machine tool element) - Wikipedia

   en.wikipedia.org/wiki/Way_(machine_tool_element)

   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.

4. Rolamite - Wikipedia

   en.wikipedia.org/wiki/Rolamite

   The Rolamite bearing has very little friction. A Rolamite is a technology for very low friction bearings developed by Sandia National Laboratories in the 1960s. [1] It consists of two cylindrical rollers held captive in a channel by an S-shaped metal strip. The strip is under tension, which keeps the rollers pressed together with the strip ...

5. Leadscrew - Wikipedia

   en.wikipedia.org/wiki/Leadscrew

   A hydrostatic leadscrew overcomes many of the disadvantages of a normal leadscrew, having high positional accuracy, very low friction, and very low wear, but requires continuous supply of high-pressure fluid and high-precision manufacture, leading to significantly greater cost than most other linear motion linkages. [4]

6. Ball screw - Wikipedia

   en.wikipedia.org/wiki/Ball_screw

   A ball screw (or ballscrew) is a mechanical linear actuator that translates rotational motion to linear motion with little friction. A threaded shaft provides a helical raceway for ball bearings which act as a precision screw. As well as being able to apply or withstand high thrust loads, they can do so with minimum internal friction.

7. Air bearing - Wikipedia

   en.wikipedia.org/wiki/Air_bearing

   Thus, the durability of air bearings is unlimited if they are designed and calculated correctly. Roller bearings and friction bearings have a high degree of friction when used at high speed or acceleration, causing a positive feedback loop where high abrasion decreases precision, which in turn causes greater wear, leading to their eventual failure.