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Rodless cylinders cover a wider payload range

Festo has launched two high performance pneumatic linear actuators, extending the load-bearing capabilities of its DGC family to unprecedented levels. The new DGC-50 and 63 actuators feature internal piston diameters of 50mm and 63mm respectively, providing significantly more force and higher payload capacities than other actuators in the same series. The top-of-the-range version of the DGC-63, for example, can accommodate payloads in excess of one tonne.

 Festo's DGC family of pneumatic rodless actuators now spans eight cylinder sizes, ranging from a tiny 8mm to 63mm. Standard models within this series offer  velocities up to 3m/s, forces as high as 1870N and up to 5m stroke lengths as standard. DGC actuators employ an angled sealing mechanism between the carriage drive and the actuator body, which unusually for rodless actuators ensures virtually zero air leakage and facilitates the manufacture of extra long actuators for special applications. Festo has  supplied DGC actuators with stroke lengths of up to 9m to special order.

DGC series actuators offer a choice of three types of carriage guide, to best suit the application  and the load. The basic guide features a plain polymer bearing suitable for light loads; the medium load guide also uses plain polymer bearings running on a guide rail compactly integrated as part of the actuator extrusion, and is factory-adjusted for optimum performance; and the high-performance guide uses stainless steel caged and sealed recirculating ball bearings. The latter can handle very smooth and high speed movements, has zero backlash, and is capable of accommodating loads that apply a high moment of torque to the carriage.
 

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