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Tolomatic electric actuators with longer strokes (to replace fluid-power cylinders)

By Lisa Eitel | April 10, 2018

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Tolomatic high force electric rod-style actuators now feature stroke lengths to 1.5 m (60 in.) for more flexibility for converting motion control applications with hydraulic or pneumatic cylinders to electric linear motion. Designed for high duty-cycle performance in demanding applications, the RSX, RSA and ERD electric rod-style product families use planetary roller screws for longer service life in a compact package compared to electric actuators using ball screw technology.

Tolomatic’s highest-force actuator, the RSX, is expanded to 1.5 m stroke length (from 600 mm). The RSA and ERD are expanded to 1.5 m and 1.2 m, respectively, from 450 mm.

The RSX uses a tie-rod design, provides forces up to 133.5 kN (30,000 lbf) and is suitable for hydraulic replacement applications. The RSA HT is available in four sizes, forces up to 58 kN (13,039 lbf) and is the most flexible product line for fluid power replacement. The ERD stainless steel, hygienic electric actuator rated, rated IP60k for applications in the food and beverage market, is available with forces up to 35 kN (7868 lbf). Tolomatic’s IMA servo linear actuator and ServoWeld spot-welding servo actuator platforms are also available with roller screw configurations at various thrust ratings and stroke lengths.

“Compared to hydraulic or pneumatic cylinders, electric actuators provide better motion control, superior flexibility, better efficiency, no contamination risk, and few maintenance concerns,” said Aaron Dietrich, director of marketing, Tolomatic.

“With these expanded roller screw options, Tolomatic is one of the few companies worldwide with this level of capability to replace fluid power cylinders. With the added benefit of 10 to 20 times the life of an equivalent ball screw actuator, roller screw actuators bring much more value to customers looking for long life actuator setups.”

Tolomatic’s roller screw actuator families are available with unique features to aid conversion of fluid power cylinders and maximize life, including easy re-lubrication and IP (ingress protection ratings) from IP65 to IP69k.


Filed Under: Linear Motion Tips
Tagged With: Tolomatic
 

About The Author

Lisa Eitel

Lisa Eitel has worked in the motion industry since 2001. Her areas of focus include motors, drives, motion control, power transmission, linear motion, and sensing and feedback technologies. She has a B.S. in Mechanical Engineering and is an inductee of Tau Beta Pi engineering honor society; a member of the Society of Women Engineers; and a judge for the FIRST Robotics Buckeye Regionals. Besides her motioncontroltips.com contributions, she also leads the production of the quarterly motion issues of Design World.

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