Bell-Everman (Goleta, CA) offers the SLS line of ballscrew- and linear-motor-driven sealed motion stages that feature a lip seal design that keeps debris, particulate, and liquid contaminants from gumming up the internal drive and bearing components. Made from a ruggedized polyurethane elastomer, the seal integrates with the stage’s anodized aluminum housing. The seal’s design allows it to be field-replaceable without disassembling the stage. Linear motor configurations can achieve accuracies of ±4 μm per meter of travel, and bidirectional repeatability of ±2 μm. Ballscrew configurations can achieve accuracies of ±10 μm per meter of travel, and bidirectional repeatability of ±5 μm.

Standard travel lengths are available from 100 to 1,000 mm, with custom lengths to 2,000 mm. Speeds to 4 m/sec for linear motor drives and 0.4 m/sec for ballscrew drives are achievable. Continuous linear force to 300 N is achievable for linear motor drives, and 1,540 N for ballscrew drives. Applications include laser machining, welding, semiconductor, machining, and other contamination-sensitive precision motion applications.

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Motion Control & Automation Technology Magazine

This article first appeared in the June, 2014 issue of Motion Control & Automation Technology Magazine.

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