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Design Method of System Tolerances in Cylindrical Gearboxes for Cost-Efficient Optimization of the Excitation Behavior

The article proposes a method to optimize cylindrical gearbox tolerances by balancing gear noise performance and manufacturing costs using modeling, analysis, and meta-model-based optimization.

Unique Pathways to Learning

GROB successfully implements European workforce development strategies in the United States

Advanced Lubrication Technology

Shell Gadus OG grease enhances open gear operation in mining facility

MPMA and Federtec Bridge the Global Skills Gap

Modernized, On-Demand Courses Provide Accessible Gear Education for the Next Generation of Professionals

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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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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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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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Experimental Study on the Performance of Plastic Worm Gears

This study examines the implementation and experimental validation of state-of-the-art plastic worm gear design methods, focusing on the VDI 2736 guideline as the most comprehensive reference for load-carrying capacity calculations.

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Design

As a community, we gear engineers collaborate and share ideas to progress our collective capability. Technology progresses based on our efforts, and we have seen solid advances in the performance of our products as they become quieter, cheaper, more efficient, and more power dense. The pages of this magazine (past and present editions) are filled with examples where talented engineers have dug deeper into a subject using a more precise approach to a particular area concerning gear performance. The implied belief is always that greater precision (complexity) in the calculations brings greater accuracy (alignment with reality).

Grinding

Inspection

Different component characteristics in electric vehicles lead to higher noise and load requirements in the automotive industry. E-mobility—to a certain degree—is changing how gear analysis and inspection is carried out. Dissecting noise issues in gears and gearboxes requires an analytical approach like a detective. The problem could stem from the design itself, tolerancing or tip/root relief issues, tooth flank form deviations like waviness or perhaps crowning issues that directly impact noise. Every aspect of gear production needs to be examined to provide the most accurate results.

Heat Treating

Press quenching is a tried-and-true process for the controlled hardening of flat, circular close tolerance parts. The process ensures good dimensional control and uniform hardening, thus allowing for seamless processing post heat treatment.

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Videos

Marposs Control 2025

Marposs presents its latest innovations in precision measurement and quality at Control 2025. Marposs technologies support advanced manufacturing processes and ensure the highest standards of accuracy and reliability.

Industry News

The Society of Tribologists and Lubrication Engineers (STLE) has entered into a strategic partnership with the Motion + Power Manufacturers Alliance (MPMA) to jointly develop and deliver content for the 2026 MPMA Fall Technical Meeting (FTM).

Product News

Kadia has released the second generation of the E line honing machine. At the heart of the new machine is the completely redesigned LH2x honing spindle, which consolidates experience from more than 1,000 LH spindles sold into an entirely new platform. Three direct drives for oscillation, rotation, and expansion are housed within a highly rigid monocoque structure that minimizes vibration and reliably absorbs high dynamic forces.

Calendar

American Manufacturing Summit 2026

Mar 17, 2026 - Mar 18, 2026

The Generis American Manufacturing Summit (AMS) has a rich history as an exclusive platform for manufacturing leaders—and now in its 12th year, it remains a premier manufacturing summit and one of the top manufacturing events for executives, built for high-level, in-person knowledge exchange and solution exploration.

IMTS 2026

Sep 14, 2026 - Sep 19, 2026

CTI Symposium USA 2026

May 19, 2026 - May 20, 2026

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