Tag: Air Bearing Precision

Scanning Performance of Air Bearings

1.  Introduction A common application in which an air bearing is specified is scanning. Scanning involves moving either a work-piece or an optic at a constant velocity, while a reading or writing operation takes place. Such operations include printing and image-setting (i.e., writing) and imaging (i.e., reading). While the physical act of writing an image […]

Straightness and Flatness of Air Bearings

1. Introduction When working with air bearings, we often describe the quality of motion as one of the key factors in selecting an air bearing; specifically, the straightness and flatness of travel of linear bearings and stages. Just how straight and flat? What levels of precision are achievable? In this technical note, we will discuss […]

Top 7 Air Bearing Myths

1. Air bearings are expensive. PIglide air bearings with no motors start at under $2k for a simple linear air bearing slide bearings and under $3k for a small rotary bearing. 2. Air bearings are only used for high speed motion. It’s true that air bearings are used in many high speed applications and can […]

Why To Use Air Bearing Stages Over Mechanical Bearings

Most motion applications are perfectly well-served by mechanical bearing guidance; but there are many cases where precision, angular repeatability, and geometric performance must be optimal or where vibration and sub-micron bearing rumble is problematic. An air-bearing stage can help in these situations. An air-bearing stage is a rotary or linear positioner that floats on a […]

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About PI

PI (Physik Instrumente) is a leading manufacturer of precision motion control equipment, piezo motors, air bearing stages and hexapod parallel-kinematics for semiconductor applications, photonics, bio-nano-technology and medical engineering. PI has been developing and manufacturing standard & custom precision products with piezoceramic and electromagnetic drives for 4 decades. The company has been ISO 9001 certified since 1994 and provides innovative, high-quality solutions for OEM and research. PI is present worldwide with fifteen subsidiaries, R&D / engineering on 3 continents and total staff of more than 1,000.

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