Synchronous belts are common in motion systems, providing smoother operation and better high-speed performance than chains and lacking the problems of slipping and stretching that can plague V-belts in precision applications. But one downfall of … [Read More...]
FROM THE EDITORS
Review of linear actuation complemented by guide wheels
Linear bearings based on steel guide wheels often complement motor-based linear actuation in two challenging application types: Long-stroke linear-motion axes as those driven by belts, linear … [Read More...]
Thomson introduces online quote tool for customized 60 Case shafting and hardened pins
Thomson Industries, Inc., a leading manufacturer of linear motion control solutions, has introduced an online instant quote tool that helps design engineers save time during the selection and purchase … [Read More...]
Wire-actuated encoder features 12-m measuring length
The new SG121 wire-actuated encoder from SIKO features measuring lengths up to 12 m with an installation depth of just 70 x 85 x 105 mm. The robust aluminum housing, coupled with impact-resistant … [Read More...]
Mechanical properties of materials: stiffness and deflection
In a previous post, we looked at the stress-strain curve and its relationship to various aspects of material strength — tensile strength, yield strength, and fracture strength, for example. And while … [Read More...]
Boosting productivity with the right direct-drive motor and linear-motor feedback
Feedback options for linear motors and direct-drive torque motors abound. The most common employ optical, magnetic, capacitive, or inductive measurement. Here we explain how the key application … [Read More...]
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 … [Read More...]
What causes synchronous belt noise and how can it be reduced?
Synchronous belts are common in motion systems, providing smoother operation and better high-speed performance than chains and lacking the problems of slipping and stretching that can … [Read More...]
How to size a rack-and-pinion system for a precision motion axis
In a previous motion-sizing article, we reviewed how to properly specify a ballscrew-driven motion axis. Here we review how engineering teams can use a similar approach for sizing … [Read More...]
How can lead screw backlash be reduced?
Backlash is an inherent property of lead screw assemblies due to the sliding motion between the screw and the nut. For some applications, a certain amount of backlash, or "play," can be tolerated, but … [Read More...]
What’s the difference between ball screw critical speed and characteristic speed?
Ball screw drives incorporate two primary moving components: the rotating screw shaft and the nut that traverses the screw. (The radial bearings that support the screw shaft play a minor role for the … [Read More...]
Ball screws feature high speed, high load capacity for machine tool applications
Featuring high-speed performance and load capacities that exceed existing full ball standards, THK’s new Type BSM ball screw is ideal for use in machine tools. The Type BSM uses a newly developed … [Read More...]
New linear motion kits from Ewellix extend industrial robot capabilities
Ewellix, formerly SKF Motion Technologies, has launched a new series of linear motion modules designed to increase significantly the capability of small industrial automation robots and cobots. The … [Read More...]
SKF Motion Technologies becomes Ewellix
SKF Motion Technologies, formerly part of the SKF Group, has launched a new name and branding, to reflect the changes that the company has undergone since it was acquired in December 2018 by Triton … [Read More...]
New generation of linear motor stages from Yaskawa
The Drives & Motion Division of Yaskawa America, Inc. has added the Sigma Trac II series linear servo motor stages to the Sigma-7 servo family. Sigma Trac II combines a Yaskawa SGLF2 series … [Read More...]
Motion basics: Difference between Cartesian and polar coordinate systems
Coordinate systems provide a way to define a point in space in either one, two, or three dimensions. The most prevalent coordinate system used in linear motion applications is the Cartesian … [Read More...]
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