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Machine Design

Folded-over linear-rail system

The RGS/RGW linear-rail system includes a 180° folded-over motorized design. Components of the foldedover system include the stepper motor, belt and pulley, precision leadscrew, bearing supports, and rail with load carriage. Sensors can also mount within the integrated dovetail grooves.

Standard drive ratios 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. Available screw leads range from 0.050 to 1.2 in./rev. When using a 2:1 ratio, a 0.050-in./rev leadscrew, and a 200-step/ rev stepper motor, a positioning resolution of 0.125 thousandths is possible. For high-speed applications, a 1:2 pulley ratio and a 1.2-in./rev leadscrew provides a maximum speed of over 7 ips.

All rails feature standard wear-compensating antibacklash-driven carriages for repeatable and accurate positioning. The splined aluminum guide rail and 303 stainless-steel leadscrew is coated using Kerkote TFE coating for a permanently lubricated surface. Maximum load capability of the folded-over motorized RGS is 35 lb in the Z direction and 35 lb in the hanging/gantry load position. Maximum roll and yaw moment is 3.25 in.-lb and maximum pitch moment is 5.66 in.-lb.

Haydon Kerk Motion Solutions
1500 Meriden Rd.
Waterbury, CT 06705
(203) 756-7441

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