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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.

State of the Gear Industry 2026

The gear industry navigates uncertainty, finds pockets of strength, and bets on automation

¡Rápido!

With many of its precision gears produced in small lot sizes, Spanish gear producer Engranajes Juaristi S.L. depends on Gleason machines for exceptional speed and flexibility.

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Technical Articles

Electric vs. Combustion: A Comparative Analysis of Gear Design for Commercial Vehicle Applications

This paper examines the transition from internal combustion engine (ICE) vehicles to electric vehicles (EVs), highlighting the distinct gear design requirements for each and presenting a comparative case study of gearbox configurations in a 14-ton commercial vehicle.

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A Review on Gear Transmission Error

This paper will review the development process, current research status, characteristics, functions, and measurement methods of TE. It will analyze the difficulties and core issues existing in the basic theory of TE, clarify the limitations and deficiencies of TE, and explore ways to overcome the shortcomings of TE.

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Morphology of FZG-A Test Gears

This study explores the failure mode morphology of FZG-A test gears. It aims to examine the orphologies of scuffing, scoring, scratches, and polishing using high-magnification light optical microscopy (LOM) and scanning electron microscopy (SEM) images.

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The Intrinsic Pitch Cones in Hypoid Gears

A method to calculate pitch cones for hypoid gears using macrogeometry parameters—similar to non-offset bevel gears—while accounting for the added complexity of hypoid offset, tooling, and cutting technology is explored in this paper.

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Design

Thanks to material development and additive manufacturing opportunities, it’s important for the gear and power transmission industries to monitor the trends, technologies and future forecasts in the powder metal market.

Grinding

Cylindrical grinding is an essential machining process in precision manufacturing, ensuring that components meet stringent tolerances with superior surface finishes. Optimizing this process involves a strategic approach to wheel selection, process automation, in-process measurement and machine maintenance. This article explores key technical factors that influence the efficiency and accuracy of cylindrical grinding operations.

Inspection

In the present paper, a spline-joint design and the extension of a back-to-back test rig were presented, which enable the testing of crowned spline-joints under high rotational speed, medium torque, high test temperature, and angular misalignments.

Heat Treating

The roots of heat-treating run deep within ASM (American Society for Materials) International, as its society was founded in Detroit in 1913 as The Steel Treaters Club. The heat-treating constituency of ASM created the Heat Treating Society (HTS) to provide focused leadership, communications, and service development to its network of worldwide membership of captive and commercial heat treaters, equipment manufacturers, researchers, governments, and technicians. To discuss Heat Treat 2023, the 32nd annual HTS Conference and Exhibition, Gear
Technology took a moment to catch up with conference chair Andrew Banka, vice president of Airflow Sciences Corporation. Heat Treat 2023 is colocated with IMAT and Motion + Power Technology Expo in Detroit, October 17–19.

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Videos

Kapp Niles ZP Series

Gear Profile Grinding Machine ZP 10 with automatic tool changer from Kapp Niles. The machine concept stands for maximum workpiece quality, flexibility and a long service life. The basic machines are equipped with a dresser, integrated measuring device, balancing unit and comprehensive software. The machines feature generously dimensioned rotary tables with electrical direct drive and large rotary table bores.

Industry News

Affolter Group is investing in a major expansion and renovation of its headquarters in Valbirse (Grand Chasseral, canton of Bern, Switzerland). Construction has been under way since 2024 at the company’s site on Grand-Rue 74 and will continue through 2027.

Product News

Sandvik Coromant has released CoroTurn Plus, a sensorized turning adapter that brings real time visibility, higher process security and scalable automation to turning operations. By making cutting forces, vibration, chatter and in cut status visible as they occur, the solution helps teams stabilize performance, enhance part quality and consistency, and reduce waste.

Calendar

WZL Gear Conference USA

Jul 15, 2026 - Jul 16, 2026

The WZL Gear Conference USA will take place on July 15 and 16, 2026, at KLINGELNBERG America, Inc. This renowned conference brings together North American companies with the Laboratory for Machine Tools and Production Engineering (WZL) at RWTH Aachen University and offers a compact overview of current developments and research topics in gear technology.

Sandvik Coromant Tech Days

May 6, 2026 - May 7, 2026

Gear Up for Precision Open House

Jun 9, 2026 - Jun 10, 2026

Fabtech Canada

Jun 9, 2026 - Jun 11, 2026

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The Gear Industry Buyers Guide is your complete directory of suppliers in the gear industry, including great companies like these.


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