APR Series Direct-Drive Rotary Stages are Ideal for Rotary Testing, Pointing, Optical Calibration and Metrology

Aerotech APR series rotary stages employ precision-machined and ground stage parts coupled with high-precision angular contact bearings and an Aerotech direct-drive motor to produce exceptionally low error motions, accuracy errors, and repeatability errors. The addition of high-resolution optical encoders provides excellent pointing capability with low-jitter velocity tracking.

APR stages are ideal for rotary testing, pointing, optical calibration systems, and metrology systems in applications including single and multi-axis electro-optic sensor testing, resolver or optical encoder accuracy testing, missile seeker testing, antenna testing, inertial navigation device testing, photonic component alignment, high-accuracy laser machining, and precision wafer inspection. Multiple APR stages can be combined for high-accuracy azimuth/elevation or azimuth/roll systems. Vacuum-prepared and other customized versions are available for specialized applications.

Flexibility is assured with high-resolution absolute or incremental optical encoders. The absolute encoder option allows instant initialization upon power-up and eliminates the need for a home cycle. Incremental encoders are available for a cost-effective, accurate, high resolution, high dynamic performance alternative. Both incremental and absolute encoders provide exceptional accuracy and fine stepping capability.

Standard APR stages mount the payload directly to the precision-ground stage shaft via an eight-bolt hole pattern on the top of the shaft. The top surface and the aperture of the shaft are precision-machined for minimal surface runout with respect to stage motion. Precision-ground tabletop options provide more traditional metric or English hole-patterns while maintaining low surface runout of the tabletop mounting surface and aperture.

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