The new CRW 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 CRW range of cylinders, as well as standard forms of rotation i.e. 90°, 180° and 360°, specials may also be manufactured according to customer requirements. Cylinder bore sizes range from Ø25 to Ø100 mm diameters.
The heart to the CRW cylinder consists of 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 poliurethan seals and PTFE guide ring. Cylinders without rotation regulation, an error +/- 1° should be allowed for.
