FEATURE Drives, motors & controls


Slide guide support relies on surface-to-surface contact between plain bearings and anodised aluminium extrusion, which is part of the guide. This increases friction, but self-lubricating polymers can increase durability tenfold


of greater vulnerability to contaminants. Wheel guides (bottom) are built for speed.


They rely on rolling motion as well but use wheels on tracks instead of in ball cages. This architecture enables wider carriages, which helps counter moment loads. It also enables moving high loads with high acceleration, contributing to the ability to function  changing operations.


Depending on the application, wheel guides can be more durable than slide guides, even those using self-lubricating bearings. Their rolling technology makes them suitable for higher-speed operation comparable to or exceeding ball screws,   sliding surface guidance.


Enclosing the motion components within  of defence against the ingress of foreign  in which the carriage runs. The cover bands


are usually plastic or stainless steel. Corrosion-resistant plastic bands can seal the unit by snapping into grooves along the carriage opening, while stainless steel bands might utilise magnet strips for sealing. Units with self-adjusting tensioning mechanisms can eliminate slack and improve sealing integrity. While there are many tried-and-true pairings of drive and guidance components,  usually multiple solutions. Visit https://www.    to see a few examples of ways in which a design engineer might start on one path and end up somewhere else. Regardless of how well-designed a  ultimately depends on how users apply it, something largely beyond the designer’s control. Frequent overloading of a machine designed for extended operation can quickly lead to failure. To mitigate risk, linear unit manufacturers build in safety factors that


     


     


Thomson www.thomsonlinear.com


®


Optical Filters for Industrial Applications


 


 


   


 


  


Features: • Tightly • •


 


    Tightly he d spectra t held spectrl al tl oller nces for repeatable performance


Des gned for use in a wide range of nspection systems Durable sputtered construction


Designed for use in a wide ri Dur ble sputtered construction


• Affordable cataglog and customized solutions • Detect the signal you need, reduce the noise you don’tDetect the signal you need, reduce the noise you don


erances for repeatable performance nge of inspection systems i


chroma.com automationmagazine.co.uk Automation | February 2026 25 


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