We have all seen the Q4 2025 headlines around electric vehicle (EV) sales and they were not good. Ford recorded a $19.5B loss in EV pullbacks (Ref. 1). General Motors posted $6B in EV debt (Ref. 2). Stellantis took a $26B hit which was compounded by underperforming EV sales and recovery from the previous CEO’s disastrous cost-cutting strategy (Ref. 3). Also, notably, was the laundry list of not-long-ago hailed startups that have went bankrupt, often leaving investors, suppliers and employees holding the bag: Bollinger, Canoo, Nikola, ELMS, Lordstown, Fisker, Arrival, Proterra, Volta just to name a few. Many more are on the brink along with dozens of startup suppliers that enticed investors with untold wealth to be gained in the automotive revolution 2.0 (Ref. 6,13,14).
The call came into Atlanta Gear Works like any other—a vertical mill drive used for a crusher application in cement needed a gearbox upgrade. The difference this time was the sheer size and scope of the gearbox in question. Similarly-sized gearbox rebuilds could take a month or more to complete, but Atlanta Gear Works had 14 days to complete this rebuild—counting weekends—with a tight schedule leaving no room for error.
.
Mechanical engineering develops the scientific and mathematical principles behind physical machines, but you can’t help feeling a little real-world magic taking place in the manufacture of components needed for large, heavy industrial applications. Cement production, for example, relies on gigantic equipment to grind raw materials using rotary kilns, ball mills, vertical mills and crushers.
.
Bosch Rexroth continues to expand the ctrlX platform with new capabilities and automation enhancements. The control platform ctrlX COREplus is now available with AI functions on all performance levels. In the area of motion and drives, Bosch Rexroth is presenting compact, energy-efficient, and cabinet-free drives from the ctrlX DRIVE portfolio, which cover virtually all performance ranges. These are complemented by the Motion, CNC, and Robotics software ctrlX MOTION, which is ideal solution for automating production machines and systems. PTE recently had a great conversation with Garrett Wagg, product manager, controls at Bosch Rexroth on new developments in mobile robotics.
.
According to a recent study by Deloitte, the aerospace and defense industry stands at a pivotal crossroads as it enters the latter half of the decade. Forces that have shaped the sector in recent years—digital transformation, supply chain volatility, talent constraints, and geopolitical events—are converging with new catalysts such as agentic AI, emerging vehicles and the rapid evolution of autonomous systems. On the defense side, budgets are a key focus, with a growing emphasis on enhancing mission readiness. At the same time, defense priorities are shifting to accelerate the fielding of AI-enabled systems and collaborative combat aircraft. “Speed to field” is becoming the unifying metric across portfolios. (deloitte.com)
.
Gear drives are fundamental in most processing operations, connecting the prime mover to the driven equipment and ensuring that the system has enough torque to effectively move product. Correctly specifying and selecting the proper gear drives for critical applications leads to reliability, greater uptime and profitability.
The spectrum of machinery and equipment used in industrial automation includes everything from electric motors to robotics and each has its own unique attributes and sealing requirements. David Kaley, Trelleborg global segment manager for industrial automation, shares his expertise on speed reducers covering what they are, how they work and key considerations for correct sealing in this article.
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.
Demand for specialty wire and cable—fueled in part by data center expansion as well as new charging stations for electric vehicles (EVs)—is in turn creating greater demand for cable production capacity. As you design machines that will satisfy the demand, you’ll want to incorporate an effective driving method that controls speed and torque with the highest precision.
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.
Bellows couplings are commonly used in applications requiring precise rotation, high speeds, and dynamic motion transmission. With zero backlash and a high level of torsional stiffness, they offer clear performance advantages in many servo-driven systems.
The Simplicity self-lubricating linear plain bearings are built to last, and they will often out-perform and last longer than a traditional linear ball bearing. Called the “little red bearing” by loyal customers, they have been a popular replacement for failing ball bearings. Simplicity plain bearings will not catastrophically fail.
The difference between a smooth-running drive and constant headaches? The right timing belt and pulley plus a whole lot more. Discover what works, what doesn’t, and put your design skills to the test—engineer your best system yet!
Discover how Regal Rexnord’s Bauer™ PMSM gear motor helped a transportation company streamline inventory, cut energy use, and save $80,000 annually. Learn how this scalable solution delivers financial, operational, and sustainability gains across facilities.
With the goal of building a full lineup of actuators for every joint required in robot construction, Bonsystems has been developing robotic actuators and introducing the BCSA V4 Series. The BCSA Micro Series is a Cycloidal Micro Actuator designed specifically for robotic hands.
Mar 11, 2026
ABB Robotics is integrating NVIDIA Omniverse libraries into ABB Robotics’ RobotStudio to help manufacturers deploy physical AI in real world robotics applications.
The Flender One platform now covers all major industrial gearbox applications. With the latest addition of a universal housing concept, Flender One can now be configured for vertical, horizontal, or any mounting orientation. This advancement opens up entirely new applications that were previously impossible to serve with the platform, including agitators and mixers in chemical, food, and pharmaceutical industries, water screw pumps and aerators in water and wastewater treatment, separators, and travel drives in material handling and logistics.
Jun 25, 2026 - Jun 29, 2026
The Metal Powder Industries Federation (MPIF) presents the largest global powder metallurgy (PM) and particulate materials event that only happens once every six years in North America. The PM industry will come together where three conferences, the WorldPM2026, AMPM2026 and Tungsten2026, will be sintered into one global event.
Jun 22, 2026 - Jun 25, 2026
May 5, 2026 - May 6, 2026
Contact | Privacy Policy
©2026 Power Transmission Engineering
Power Transmission Engineering is THE magazine of mechanical components. PTE is written for engineers and maintenance pros who specify, purchase and use gears, gear drives, bearings, motors, couplings, clutches, lubrication, seals and all other types of mechanical power transmission and motion control components.
Current Issue
Current Issue
Archives
Subscribe
Buyer's Guide
Accessories Actuators Adjustable Speed Drives Bearings Belting & Belt Drives Brakes Chain & Chain Drives Clutches Controls Couplings & U-Joints Fluid Power Gear Drives Gear Manufacturing Services Gears Industrial Hardware and Machine Parts Linear Motion Devices Lubrication Motors Resources Seals Sensors Services SoftwareThe Power Transmission Engineering Buyers Guide is your complete directory of suppliers of mechanical power transmission components, including great companies like these.
VIEW ALL