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  • PRO280LM Direct-Drive Stages
Jun 2010
Aerotech Ltd.Request Info
ALDERMASTON, England, June 28, 2010 — The PRO280LM direct-drive stages from Aerotech Ltd. are available in widths of 165, 225 and 280 mm for high-accuracy heavy-load submicron positioning in harsh industrial environments.

The 280-mm-wide brushless linear servo motor-driven stages are available in eight travel options from 300 mm to 1.5 m for high-throughput applications. They feature heavy-duty linear motion guide bearings, submicron level encoder feedback and optional cable management.

The company says that the side-sealed design and aluminum hardtop cover, finished in a protective scratch-resistant hard coat, are better alternatives to soft fabric or plastic bellows stage covers, especially for applications such as laser machining. The vertical-tensioned side straps fully seal the internal stage components from machining or process debris. Optional tabletops with steel inserts allow X-Y, X-Z or Y-Z configurations with other PRO series stages with orthogonality certified to 5 arcsec.

Cable management is available for single-axis up to customer-specified X-Y, X-Y-Z and X-Y-Z+Rotary stage configurations.

The stages deliver positioning resolution of 250 nm from a choice of 0.1-µm line driver or amplified sine output encoders. Other specifications include Halar-calibrated accuracy to ± 3 µm for the 1.5-m travel version and ±2 µm for the 300-mm travel stage, with speeds to 2 m/s and acceleration to 3 g. With complementary high specifications for stage flatness, pitch, yaw and roll, and with a maximum horizontal and side load capability to 150 kg, the stages are well suited for applications where no-compromise manufacturing quality and fast production throughput are of primary importance.

Proprietary brushless direct-drive linear servomotor technology guarantees smooth motion with exacting speed control and precise in-position stability, allowing the stages to be equally effective for scanning or step/repeat applications or for compound axis contouring. The use of noncontact motors and feedback encoders combines with long-life wiper-sealed linear motion guide bearings for a rated mean-time-between-failure life of 20,000 h.

The company manufactures a variety of advanced motion controls that optimize the performance capability of the PRO-LM series with motion-specific and machine interfacing commands. These include the “position synchronized output” command that synchronizes real-time multiaxis position with laser firing, camera capture, data acquisition or nondestructive test triggering to produce high-quality parts and high-accuracy test procedures, with minimal cycle time.

Advanced controls include set-up, diagnostics and comprehensive features that reduce position errors and improve settling times. The motion systems include motor power and encoder cables plus performance- and calibration-related documents. Complete machine frames and bases can be included.


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