Aerotech: Linear Motor Drive Precision Stage (ALS135 Series)
Aerotech manufactures a large selection of positioning stages including linear stage models that utilize our own brushless linear direct-drive servomotors, as well as ball-screw models driven with Aerotech brush or brushless rotary motors. Innovators in linear stage design, manufacture and integration, Aerotech builds linear positioning stages for high-performance applications in industrial robots, fiber optics and photonics, vision systems, machine tools, assembly, semiconductor equipment, medical component laser machining, laser micromachining, electronic manufacturing, and other industrial automation applications.
Aerotech linear stages are available in X, XY and XYZ combinations to meet your motion requirements.
ALS135 Mechanical-Bearing Direct-Drive Linear Stage
Direct-drive linear motor for ultra-precise motion
High-accuracy noncontact linear encoder
Outstanding performance in a small footprint
The ALS135, with its low profile and outstanding performance characteristics, is the ultimate solution for high-accuracy alignment and inspection stations.
Unlike many stages that utilize a side-drive lead screw, the ALS135 employs a center-driven, non-cogging linear motor as the driving element. Since the linear motor is a direct-drive device there is no backlash, windup or “stiction” that is normally associated with a lead screw or ball screw drive.
The linear motor drive also offers the advantage of higher speeds and accelerations. The compact yet powerful linear motor drives the ALS135 to a peak unloaded acceleration of 1 g and a maximum velocity of 300 mm/s. The result is a high-accuracy device with outstanding throughput that significantly outperforms comparable high-accuracy screw-driven stages.
For alignment applications, outstanding step-to-step resolution is critical. The ALS135 meets this demand with a resolution of 2.5 nm when coupled with Aerotech controls. The direct-drive linear motor allows the ALS135 to make precise, small resolution steps. This is particularly important in alignment applications where step accuracy is critical.
Aerotech’s ultra-stiff construction and compact two-piece design results in a stage with unmatched geometric tolerances. As a result, straightness and flatness for the standard stage is <±2 μm over the entire travel. The effects of Abbe error are nearly eliminated, vastly improving overall system accuracy.
Designed for smooth, vibration-free motion, the ALS135 exhibits the outstanding ripple-free motion required for scanning and inspection applications.
Like all stages in the Aerotech product family, the ALS135 was designed for outstanding long-term performance. Both the linear motor and linear encoder are noncontact devices — they not only exhibit long-life, but are completely maintenance free. A moving magnet track design eliminates the need for cable management, further improving long-term reliability.
ALS135 series stages are easily configured as XY assemblies. Options include precision orthogonality alignment to 5 arc seconds and available vertical axis solutions.
Model No.: ALS135-025, ALS135-050, ALS135-100, ALS135-150, ALS135-200