Rotary cylinder

pneumaticrack-and-piniondouble-acting

CRW Rotary actuators UNI 6604-69 (Ø25-100) The new CRX cylinder series is a rotary actuator, which converts linear piston motion in to angular drive by means of a rack and pinion arrangement. The supply pressure to the cylinder determines the output torque. Male and female pinions are available in the CRX range of cylinders, as well as standard forms of rotation i.e. 90, 180 and 360 degrees, specials may also be manufactured according to customer requirements. Cylinder bore sizes range from 25 to 100 mm diameters. The heart to the CRX cylinder consists of a toothed pinion fitted on to a shaft and supported by ball bearings, coupled to a square section rack which, intern is supported and guided by a plastic plate. The latter allows recovery of any slack that forms between the rack and pinion via a spring-adjusted system. In order for the piston to move in a perfectly linear direction, an articulated coupling is fitted to the rack. The piston is manufactured in aluminium with poliurethane seals and PTFE guide ring. Cylinders without rotation regulation, an error of + - 1 degree should be allowed for. The slack recovery system completely nullifies slack, and thus guarantees repeatibility of rotation.