Dual Axis Linear Stepper Motor

The open-loop linear stepper motor provides the most economical linear motor positioning package. The compact dual-axis stepper motor provides travel along two axes in a single plane.The dual axis package is comprised of two components: a moving forcer (with bearings) and a stationary platen. A position verification system is available to close the loop. The dual-axis linear stepper motor is designed for two-axis open loop positioning. It is a two axis stage with integrated air bearings and positioning system. Moving primary 2 or 4-phase dual-axis linear stepper motor consists of a moving forcer and a stationary platen. The forcer is made of four single-axis coil assemblies. 2 of the forcer assemblies are mounted in series to provide a thrust in the X direction and the other two are mounted orthogonal (at 90 deg.) to the first two assemblies to provide thrust in the Y direction. The forcer assemblies are encapsulated in a hard anodized aluminum housing. The motor?s surface is lapped to provide a flat surface for the air bearing. The floating height of the air bearing is less than 25 µm [0.001 in]. The forcer is available in eight sizes, depending on the application?s force requirements. The platen is a photo-chemically etched steel plate that is filled with epoxy and ground. Standard mounting holes are provided on forcer and platen. The platen is available in sizes up to 0.24m x 0.34m [36 in x 59 in]. Preload for the bearing system is provided by the magnetic-attractive force between the forcer and the platen. The customer must bring power to the forcer with a cable, and provide the bearing air supply. Features: Two-axis motion in a single plane Acceleration to 19.6 m/s2 [2g] High repeatability 5.08 µm [0.0002 in] Flatness = 12.7 µm/300 m [0.0005 in/ft.] •Resolution = Full Step umber of microsteps 2-phase min. 5 µm [0.0002 in] 4-phase min. 2.5 µm [0.0001 in] Platens up to 914 mm x 1,498 mm [36 in x 59 in] For open position loop systems No tuning Multiple forcers with overlapping trajectories on a single platen High stiffness air bearings Mount face up or inverted. Required drive: Microstepping driver Lowest cost dual-axis positioning stage

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