Choosing the correct drive screw type is critical to getting the best actuator performance, accuracy, and repeatability Chris Maupin Program Manager and Engineer Hunt Valve Actuator Division Screw drivetrains are the most common types of electromechanical linear actuators. A screw drivetrain acts as a linear force generation system, converting a rotary torque input from a […]
Low-cost, high-performance alternative to rod actuators, pneumatic cylinders
Bell-Everman’s new ServoBelt RA is a high-performance, drop-in replacement actuator designed for applications that have traditionally used rod actuators, pneumatic cylinders or even linear motors. Unlike traditional rod actuators, ServoBelt RA is fully guided along the entirety of its stroke, making it more resistant to off-axis loads and more stable in on-axis moves. With linear […]
Tolomatic expands hydraulic-class electric actuator force range to 50,000 lbf
Tolomatic’s expanded extreme-force electric actuator family now includes the RSX128 actuator, rated up to 50,000 pounds of force (222.4 kN). Ideal for replacing hydraulic cylinders and designed for 100 percent duty cycle, the RSX actuator features Tolomatic’s precision-ground planetary roller screws for long, consistent operating life in challenging environments. Applications include assembly, metal fabrication (pressing, […]
Tolomatic develops open-source, low-cost ventilator actuation prototypes for COVID-19 patients
In an effort to support the global need for medical ventilators, Tolomatic has dedicated a team of engineers to the development of highly efficient emergency ventilator concept systems using electric linear actuators. Tolomatic’s solution is a new type of ventilator that operates using an electric linear actuator. These prototypes automate a non-invasive, positive-pressure resuscitator (also self-inflating […]
Out with the oil, in with the screw
A new generation of electromechanical actuators is replacing hydraulic cylinders in demanding applications. Increasingly, that choice is being driven as much by cost advantages as by performance. Tarek Bugaighis Ewellix Traditionally, when engineers wanted to produce large forces or move heavy loads their first choice would be hydraulic actuation. Today, however, hydraulic systems have a […]
High load capacity actuator from NB Corporation
This compact single axis actuator from NB Corporation features a unique “U” shaped integrated slide guide and ball screw. The BG actuator’s highly rigid structure may be one-end supported. The 4 ball circuits contained in its slide block deliver high load capacity, accuracy and rigidity. The product catalog supplies all dimensions, drawings and ratings necessary […]
New IoT-ready electro-mechanical actuators from Ewellix
Ewellix, formerly SKF Motion Technologies, has developed new actuators which deliver forces up to 82 kN and speeds of 1 m/sec, to provide real-time, accurate information that improves machine productivity. With the newly designed Ewellix actuators, production line upgrades are now possible without major modification of existing machine layouts. The new CASM-100 and LEMC actuators […]
Actuators with extreme power density, reliability for aerospace applications
The R-Series actuators from Ultra Motion leverage years of heritage in high reliability actuator design for aerospace/spaceflight applications. Using Ultra Motion’s flight proven, patented Phase Index absolute position sensor, the R-Series provides high-resolution absolute position feedback in the most extreme environments and with uncontested mass, economy, and power density. R-Series actuators are well suited for […]
Belt-driven electric actuators from IMI Norgren offer precise control
A new line of belt-driven electric actuators from IMI Norgren is designed to meet the force and extreme loading requirements for machine builders and plant engineers looking for an alternative to pneumatic actuators. NB27 single rail belt-driven linear actuator features a unique arc belt technology that improves traction for higher thrust. These single rail actuators […]
Hybrid stepper-lead screw actuators from Thomson feature built-in anti-rotational guidance
Thomson Industries has expanded its line of stepper motor linear actuators with models featuring built-in anti-rotational guidance. The new motorized lead screw actuator (MLA) product saves designers of high-precision, shorter-stroke applications the cost, time and maintenance worries related to designing and building externally guided systems themselves. The actuator configuration provides effortless integration into the assembly […]
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