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Reliance Precision Limited

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Introducing the Folded-Over Motorised Linear Rail System

Alongside precision couplings, gears and intelligent motion control, Reliance Precision Mechatronics, the UK distributor for Haydon Kerk Motion Solutions Inc., a premier manufacturer of engineered linear motion products, announces the RGLS/RGLW linear rail platform with a180o folded-over motorised design. This design allows for a small footprint linear actuator system, perfect for precision motion applications where space is at a premium.

The folded-over linear rail contains all the components needed for a complete motion sub-assembly, including the stepper motor, belt and pulley, precision leadscrew, 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 aluminium pulleys and a fiberglass reinforced neoprene timing belt. Screw leads available range from 1.27mm to 30.5mm/rev (0.050 in/rev to 1.2 in/rev).  When using a 2:1 ratio, a 1.27mm/rev (0.050 in/rev) leadscrew and a 200 step/rev stepper motor, a positioning resolution of 0.003175mm (0.000125") is possible. For high-speed applications, a 1:2 pulley ratio and a 30.5mm/rev (1.2 in/rev) leadscrew provides a maximum speed of over 178mm/s (7 in/s).

All RGLS and RGLW linear rails feature standard wear-compensating anti-backlash driven carriages to ensure repeatable and accurate positioning. The splined aluminium guide rail and 303 stainless steel leadscrew is coated using Kerkote® TFE coating, providing a permanently lubricated surface. Maximum load capability of the folded-over motorised RGS is 15.85Kg (35 lbs) in the "Z" direction and 15.85Kg (35 lbs) in the hanging/gantry load position. Maximum "roll" and "yaw" moment is 0.367Nm (3.25 in-lbs) and maximum "pitch" moment is 0.639Nm (5.66 in-lbs).

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