Haydon Kerk Motion Solutions (Waterbury, CT) has introduced the Kerk® RGS/RGW linear rail platform, now including a 180° folded-over motorized design that allows for a small footprint linear actuator system. The folded-over linear rail contains stepper motor, belt, and pully, precision lead screw, bearing supports, and rail with load carriage. The rail also contains the capability of mounting sensors within the integrated dovetail grooves. The standard drive ratios available from the motor to the screw are 2:1, 1:1, and 1:2, using lightweight aluminum pulleys and a fiberglass reinforced neoprene timing belt. Screw leads available range from 0.050 in/rev to 1.2 in/rev. When using a 2:1 ratio, a 0.050 in/rev lead screw, and a 200 step/rev stepper motor, a positioning resolution of 0.125 thousandths is possible.

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Topics:
Medical Motion Control

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    This article first appeared in the January, 2012 issue of Medical Design Briefs Magazine (Vol. 2 No. 1).

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