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Catch up on the latest news and updates.
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| The Path of Least Resistance—Roller Bearing Damage in VFDs |
Bearing damage due to electric current in variable frequency drives (VFD) is well understood as a general concept. What is not yet fully developed are the models that better predict when a system is at risk and where we should be looking for early signs of damage.
Aegis (grounding rings) has, for years, provided great documentation outlining the need for an insulated / conductive pairing in VFDs due to various currents involved. In the chart below, shaft voltage discharge and high frequency circulating currents are typically what we are looking for.
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| Ball Bearing Efficiency |
I would like to briefly discuss some thoughts on ball bearing efficiency specifically in terms of applied load and resulting stress. I don’t want to trivialize this subject; there are textbooks written on the subjects of electrohydrodynamic lubrication (EHL), octahedral subsurface shear stress and friction losses due to elastic hysteresis. This is a just a high-level discussion on the importance of individual bearing stress on efficiency.
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| Elgeti Offers Spring 2026 Online Bearing Seminars |
Elgeti Engineering has released the schedule for its Online Bearing Seminars for Spring 2026. Gain a thorough understanding of bearing technology, from basis design questions over supplier development to failure analysis. Attendees can take advantage from the broad experience of lecturers in 90 min online sessions. Choose from individual sessions, complete topics, or enroll in the full six-week program.
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| [Advertising] |
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| NES: Your Premier Custom Bearing Solution Provider |
Napoleon Engineering Services is your one-stop shop for engineered bearing products, specializing in custom manufacturing, testing and inspection.
For 28 years, NES has provided valuable services to an array of industries, including aviation, aerospace, automotive and agriculture. They’ve done so with impeccable customer service, meeting short lead times and answering the phone within two rings.
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| Stock Metric Gears for Industrial Applications |
QTC Metric Gears has expanded its stock gearing options for industrial applications, including spur, bevel, helical, internal ring gears, gear racks, worm gear pairs, and more. Explore the full range of QTC Metric Gears and SDP/SI standardized gearing solutions, your single, convenient source for reliable gearing components.
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| When to Choose a Lead Screw or a Ball Screw |
The drive system choice is dependent on key motion features of your application. Lead screws offer self-locking capabilities, while ball screws require brakes to prevent back-driving. The choice between them hinges on efficiency, cost, precision, and speed, with the screw drives themselves paired with a linear guide for optimal performance.
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| Elastomer Insert Jaw Couplings |
For applications requiring higher performance than typical insert couplings, DieQua's EC series provides zero backlash, several clamping styles and five different insert types providing varying degrees of torsional rigidity.
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| 2026 FTM Call for Papers |
The FTM will expand into a dual-track format in 2026. The first track will maintain the classic structure—featuring highly technical papers and presentations on new technologies, all peer-reviewed and indexed in Scopus. The second track will consist of presentation-only sessions focused on cutting-edge developments, innovative company solutions to market challenges, and emerging technologies poised to influence the future of the bearing and gear industries.
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