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What are differential roller screws and how do they differ from planetary...
Traditional roller screws — sometimes referred to as planetary roller screws — can produce axial forces comparable to hydraulic cylinders, with the speed and precision capabilities of ball screws, at a...
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XY2Z-theta motion system improves wafer inspection for the semiconductor...
For more than fifty years, the Dutch linear-motion company PM has developed and produced precision linear and rotating bearings and slides. It focuses on applications requiring smoothness and stiffness...
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What are some alternatives to L10 bearing life?
If you work with linear ball or roller bearings, you’re familiar with the L10 bearing life equation, which states that bearing life is equal to the bearing’s rated dynamic load capacity, divided by the...
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How to reduce the effects of stiction (stick-slip) in linear guides
Unless you’re playing the violin, stiction, or stick-slip, is an unwanted condition caused by the difference between static and dynamic friction between the two surfaces. When stiction occurs in linear...
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Linear guides, power transmission, actuators see unexpected applications
Our 2020 survey of the industry indicates an unabated trend towards more automation of previously static or manually tended systems. Key to these new offerings is installation simplicity for OEMs and...
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Linear shaft motors see increased force capabilities thanks to advances in...
By Paul Denman • Applications engineer and business development Nippon Pulse America Today most linear-motion designs execute their strokes with actuators based on stepper motors or brushless dc (BLDC)...
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What are rail brakes and when should you use them?
The servo and stepper motors that drive linear motion systems often include a braking function, or, in the case of stepper motors, detent torque that helps prevent the motor (and, therefore, the load)...
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New DR Series compact electric cylinders from Oriental Motor
Oriental Motor now sells DR Series compact electric cylinders based on 28-mm AZ Series or PKP Series stepper motors. The DR Series is available with an AZ Series or 2-phase PKP Series base motor. The...
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Linear motion in medical applications: Voice coil actuators in ventilators
More and more, medical device manufacturers are replacing traditional components with smaller, lighter-weight options that have sufficient life and reliability for “life-critical” applications. One...
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FDA-compliant, off-the-shelf linear motion components for urgently needed...
In dealing with the COVID-19 pandemic many companies have volunteered or been requested to produce urgently needed medical products such as masks, gowns, and ventilators. Tooling up quickly to produce...
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Linear motion in medical: Lead screw driven syringe pumps
Image credit: Helix Linear When we think of syringes, we typically think about the single-use type that doctors and nurses use to administer vaccines or individual doses of medication. But some...
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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...
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Linear actuators for medical ventilators and respirators available in OEM...
During the COVID-19 pandemic engineers and designers of medical devices are working 24/7 to design and manufacture critically needed life support and testing equipment. Moticont has a proud history of...
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Linear motion in medical applications: Linear systems in automated RT-PCR...
With near-constant updates on the number of COVID-19 cases confirmed globally, you’ve probably heard about various methods to screen for the virus that causes the disease. Although several, well-proven...
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Tolomatic develops open-source, low-cost ventilator actuation prototypes for...
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...
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New flanged linear bushings available from Samick
Manufacturers are faced with the enormous challenge of minimizing risks in their manufacturing processes while at the same time lowering costs and improving product quality. Flanged linear bushings...
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Linear motion in medical applications: Linear actuators in patient lifts,...
Moving a patient in a hospital or medical facility doesn’t always involve racing down a hallway with the patient in a wheelchair or on a gurney. Very often, a patient simply needs to be moved from a...
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When do you need to consider thermal expansion in linear guide systems?
Most materials used in linear systems have a positive coefficient of linear thermal expansion — that is, when their temperature is increased, they expand in length, and when their temperature is...
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PHD Inc. now sells Series ESU-RB ballscrew linear actuators
PHD Inc. now sells a new Series ESU electric actuator — the ESU-RB. This linear actuator incorporates a ballscrew and features a robust enclosed design with a high capacity rail-bearing system. These...
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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...
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