Rotary Air Bearing Series Achieve High Precision in Any Orientation

PIairPI (Physik Instrumente) has announced the new A-62x PIglide series of rotary air bearing stages. Air-bearings have no rolling or sliding elements and deliver frictionless, non-contact motion, resulting in negligible reversal error, better straightness, wobble, eccentricity and velocity stability, ideal prerequisites for high-end industrial applications such as inspection, metrology, calibration and scanning.

Air bearings replace mechanical contact by a thin film of air which is completely frictionless, resulting in no breakaway stiction or drag friction during operation. The PIglide RM series of motorized rotary air bearing stages are a complete positioning solution designed for accuracy, precision, high stiffness, and ease of use. Featuring high performance, low-cogging frameless slotless torque motors and optical encoders, these stages can be used in any orientation. Various options can be combined to create a solution ideal for point-to-point indexing or constant velocity scanning. The PIglide RM rotary positioners provide velocity to 2500rpm and extreme precision with radial motion errors as low as 50nm, axial runout as low as 50nm, and tilt errors down to 0.3arc-sec. Coupled with no required maintenance or lubrication, these rotary positioners have a virtually unlimited life.

PI designs and manufactures all air bearing products in the USA. PIs engineering team has more than 200 man years of air bearing design experience. In addition to customized systems for OEMs, PI offers a substantial standard product line of air bearing stages that includes motorized and non-motorized, linear, rotary, spherical, X/XY, voice coil, compact, and large scale systems, as a complement to the existing comprehensive range of piezo nano positioning stages, traditional motorized positioners and hexapod 6-axis parallel positioning systems. The addition of air bearing technology puts PI in the unique position to cover the whole motion range from finger-tip sized nano-positioners to large scale stages with long travel ranges, through a plethora of different drives and guiding systems that can be tailored to meet the needs of an OEM or customer.

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