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Systems Failure

Rethinking failure, replacement, and supply strategy in heavy industry

In heavy industry, gears rarely fail in the dramatic way people imagine. More often, there is no broken tooth, no immediate seizure, and no single event that clearly marks the beginning of the problem. What appears to be a healthy gear may already be operating with edge loading, unstable lubrication film, progressive surface fatigue, or overload at the tooth root. By the time visible damage becomes obvious, the failure mechanism has usually been active for some time.

Automotive Brain Power

Four Key Takeaways from CTI Symposium USA 2026

The Doctor Is In

Inside Luftex’s five-pillar approach to gearbox repair

Optical vs. Tactile Gear Measurement for E-Mobility

A practical comparison of fringe projection and conventional tactile systems for classic and waviness gear characteristics

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Technical Articles

Design Principles of Bevel Gears: Rationale for Zero Sum Profile Shifts and Generating Gear Choices

This article demonstrates why bevel gears are designed with a zero sum of profile shifts—showing that independent shifts merely replicate what a modified pressure angle already achieves—and explains the practical benefits of using conical generating gears for tooth profile crowning.

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Influence of Tooth Root Contour Deviations on the Tooth Bending Strength

This study investigates how manufacturing-related geometry deviations in the tooth root area affect gear bending strength calculations, demonstrating that accounting for measured tooth contours rather than nominal geometries is essential for accurate material comparisons in fatigue testing.

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Smart Alloying Eliminates Manufacturing Steps in Automotive Gears

20NiMo9-7 alloy achieves up to 48 percent higher fatigue strength than conventional carburizing steels in the as-carburized condition, eliminating the need for shot peening and grinding in automotive gear applications.

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Conjugate Bevel and Hypoid Gears

An excerpt from Gear Technology Solutions by Dr. Hermann J. Stadtfeld exploring the mathematics behind conjugate bevel and hypoid gears—from the fundamental laws of gearing and the conditions for perfect conjugacy to why real-world power transmissions require deliberate crowning rather than theoretically exact conjugate designs.

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Design

The toothed belt and pulley system known by the designation T, which has been selected as an example within this paper, was developed in the 1950s and standardized first in DIN 7721 (1977) and then in ISO 17396:2014. In this case study, the authors check if a single hob can properly cut T5 profile pulleys with 25 and 30 teeth—and if
so, define the range of the number of teeth covered by this hob.

Grinding

From its origins as a small machine shop to becoming a global leader in precision engineering, Gleason Corporation has continuously redefined the industry. This journey, marked by pioneering inventions and strategic expansions, has left an indelible mark on sectors ranging from automotive and aerospace to robotics and renewable energy.

Inspection

Gear inspection has long been a highly specialized, costly investment and an overall challenging part of the gear manufacturing process. Through advances in technology and automation, this typically tedious, time-consuming process is becoming significantly
more efficient as multisensor coordinate measuring machines (CMMs) gain more traction as one of the preferred methods of gear inspection.

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Videos

Forest City Gear Knows Robots!

Forest City Gear manufactures extremely high-precision gears made for the most advanced robotics, right in Roscoe, IL.  This family-owned team of gearheads specialize in high-precision gears engineered to handle the most demanding robotic applications—on Earth, and way beyond.

Industry News

ECM USA appointed Marco Möser to senior sales engineer for the western U.S. With more than 25 years of experience in the heat treatment industry, Möser brings extensive expertise in supporting OEMs on large-scale automotive programs.

Product News

Index Corp. will present manufacturers with a variety of strategies to streamline production at IMTS 2026, taking place September 14-19 at McCormick Place in Chicago, Illinois. Visitors to the company’s Booth #339119 in the South Building will witness the North American debut of multiple new machines, including an entirely new design concept tailored to small part production. The company will also demonstrate its full portfolio of proven advanced machine technologies, as well as provide insight into how manufacturers can produce every job faster to maximize profitability.

Calendar

Advanced Manufacturing Expo (AME) 2026

Jul 29, 2026 - Jul 30, 2026

The Advanced Manufacturing Expo (AME) (Grand Rapids, MI) is the premier gathering for professionals shaping the future of manufacturing. It’s where innovation meets production — connecting industry leaders, cutting-edge technology, and real-world solutions under one roof. Explore the latest in automation, metalworking, MRO, safety and Industry 4.0 technology across four dynamic halls. From hands-on demonstrations to expert-led sessions, AME provides smarter, faster, and more efficient manufacturing solutions. 

RPM Symposium 2026

Sep 22, 2026 - Sep 23, 2026

Furnaces North America (FNA) 2026

Oct 12, 2026 - Oct 14, 2026

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