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Rotary Stage Terminology

From Aerotech, Inc.

There are many factors that affect the ability of a rotary stage to position accurately. Hysteresis, backlash, feedback inaccuracy, the mounting surface, axial error motion, radial error motion, tilt error motion, and cantilevered loading all contribute to errors in the positioning of a point of interest.
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Linear Slides and Linear Stages
Linear slides are simple linear motion devices composed of a stationary base and a moving carriage. Linear stages are slides with a drive mechanism that provide controlled, precise positioning along a linear axis.
Crossed Roller Slides
Crossed roller slides are simple linear motion devices that consist of a stationary base and a moving carriage. The rollers are crossed at a 90° angle in an alternating fashion and are enclosed in the rails, which have a machined V-shaped groove to support the rollers.
Dovetail Slides
Dovetail slides are linear motion devices that allow motion and positioning along a linear axis.
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