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November 2025

Featured Article

Raul Fernandes

Speed factor, velocity factor, dn factor, NDm factor. Whatever you call it, this factor is extremely important when it comes to rolling bearing lubrication. It helps us understand the relationship between rotation and bearing diameter and how this affects the determination of the proper base oil viscosity, kappa factor calculations and the optimal amount of lubricant to apply.

Roger Beavans

Integrally geared centrifugal air compressors are multi-shaft machines used worldwide to provide high volume, high-pressure air for essential plant functions. These compressors use a central bull gear to drive one or more pinion shafts, each equipped with one or two impellers per compression stage. These compressors can span many applications...

Noria Media

What does the manufacturing industry look like in Oklahoma? In this episode of Gear Talk, Wes Cash sits down with Lieutenant Governor Matt Pinnell to discuss the manufacturing industries prevalent in the state of Oklahoma and identify what steps are being taken to bring more skilled professionals to the state and reduce the skills gap.

Diego Cantor Alvarez

For most engineers, the phrase “inherent reliability” is practically sacred: a machine leaves the factory with a baked-in limit to how reliable it can ever be. Maintenance and operating practices can help maintain that level, but they generally can’t raise it. But what happens when a brand-new machine consistently fails long before its expected life?

Bennett Fitch, Noria Corporation

Equipment failure is often treated like a mechanical mystery. When a bearing overheats, a gearbox leaks, or a motor vibrates itself into early retirement, the focus immediately lands on the physical symptom. Teams investigate the component, the hardware, the environment, or the lubricant.

Thomas L. Lantz

Many maintenance departments today “fight fires” instead of approaching their problems systematically. This article will focus on the four common types of maintenance problems with the ultim…