The concepts of inertia and momentum are often confused — possibly due to the similarity of their definitions. Inertia is generally described as an object’s resistance to motion, with momentum being the tendency of an object to continue moving. Both have implications for linear motion applications, but while inertia is a fundamental sizing parameter, momentum […]
A selection guide for linear systems
Gone are the days when machine designers and builders had to choose between constructing their own linear system from scratch or settling for a limited range of pre-assembled systems that, in most cases, were an imperfect fit for their application. Manufacturers today offer systems based on a range of drive mechanisms—ball screws, belts, rack and pinions, linear motors, […]
ATEX rated explosion-proof linear actuators
Curtiss-Wright Corporation has expanded its Exlar® linear actuator line to include the EL120 explosion-proof linear actuators. The EL120 linear actuators meet ATEX requirements for use in potentially explosive atmospheres and are in conformity with the EU ATEX Directive 94/9/EC, as well as the IECEx scheme. Additionally, they are rated for Class I, Div 1, Groups B, […]
New video demonstrates how to synchronize multiple lifting columns
Thomson Industries, Inc., a leading manufacturer of mechanical motion control solutions, has released a new video to demonstrate how design engineers can synchronize multiple Thomson Lifting Columns quickly and easily. The compact design of Thomson Lifting Columns provides a favorable ratio between stroke and retracted length to improve operator ergonomics. Models are designed to handle moment loads […]
Hardened way slides provide durability for long-life operations
Gilman Precision explains the basics of a hardened way slide, including which applications they are good for and how to keep yours in great working condition. Predominantly used for high production, hardened way slides provide linear rigidity for heavy duty applications. “A hardened way slide is a linear positioning device that incorporates precision, ground rectangular […]
When Do You Need a Gantry Robot?
When you think of an industrial robot, what comes to mind? Probably something like this… Articulated robots like these are widely recognized, thanks to car company commercials and robot dance sequences. SCARA (Selective Compliance Articulated Robot Arm) robots are also well-recognized due to their adoption and proliferation in factories since the early 1980’s. Both of these – articulated […]
How to make your linear motion technology easy to maintain
Adding linear motion to articulated robots adds flexibility and extends the work envelope of your system. The 7th axis tracks that enable this linear motion all provide the same functionality but differ in one significant design feature: the antifriction bearing system used to support and guide the tracks. Watch this video to learn how to select the […]
Inertia Matching: Why Perfect Isn’t Always Best
Inertia matching is one of the inexact sciences of motion system design. When a motor and a load are coupled together, the ratio of load inertia to motor inertia determines how well the motor can control the load during acceleration and deceleration. In theory, a “perfect” inertia match of 1:1 (load inertia equals motor inertia) should […]
Five Ways to Make Your Linear System Cleanroom Friendly
Implementing linear motion in a cleanroom presents a particularly difficult challenge, since motion – whether rolling or sliding – necessarily produces particles. But by understanding the sources that contribute to particle generation and implementing smart design options, it is possible to achieve linear motion without compromising even the most stringent cleanroom environments. Below are five ways […]
Linear Motion in the Third Industrial Revolution
According to The Economist magazine, a third revolution is coming for the manufacturing industry, ushered in by 3D printing, new materials, and collaborative manufacturing services. Anyone who has watched the 3D printing industry develop over the past decade, or even the past five years, will likely agree. Gartner forecasts that worldwide shipments of 3D printers […]
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