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Investigating the Effects of Wear, Lubrication and Material Pairing on the NVH Performance of Plastic Gears

This study systematically evaluates how material selection, progressive wear, and grease lubrication affect the noise, vibration, and harshness (NVH) performance of polymer gears, providing new insights for designing quieter, more optimized transmission systems.

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Advanced Lubrication Technology

Shell Gadus OG grease enhances open gear operation in mining facility

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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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Unique Pathways to Learning

GROB successfully implements European workforce development strategies in the United States

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Technical Articles

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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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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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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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Prospects of Asymmetric Gears in EV Gearbox

The paper examines how optimizing asymmetric gear tooth geometry through Direct Gear Design can improve load capacity, efficiency, and compactness in EV gearboxes, surpassing the performance limits of conventional symmetric gears.

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Design

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Mechanical power loss in gears is generated through sliding and rolling of the contact resulting in frictional work and elastic hysteresis generation of heat. This action is both a parasitic loss of energy from the drivetrain and a source of engineering costs to control system temperature to avoid heat-related failures of the gearbox components. Therefore, from both a cost and durability standpoint it is of great interest to minimize the frictional losses at the gear tooth contact interface.

Grinding

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The way to increase production, especially with the largest gears, is to decrease nonproductive time with improved strategies.

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Inspection

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On the surface, it may not seem like the gear inspection industry has changed much over the last few years. Shops still primarily use either machines that are dedicated solely to measuring gears, or multiuse Coordinate Measuring Machines (CMMs). And regardless of which machine they use, software serves as the backbone that supports their many diverse sensors.

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Heat Treating

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Since I have had the privilege of visiting numerous gear plants and research centers in the U.S., as well as 170 in 33 countries, and I closely watch the progression of technology, I wanted to share my observations about some technological advancements. For the purpose of this article, I will focus on three key areas: Robotics, Machine Tools, and Heat Treating.

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Videos

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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.

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Industry News

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Forest City Gear, a family-owned manufacturer of fine- and medium-pitch custom gears since 1955, has made two significant equipment investments aimed at strengthening both its machining and inspection operations.

Product News

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Weiler Abrasives has expanded its color-coded product lineup to include some of its most popular brushes for stainless steel. The color-coding helps stop cross-contamination in operations working with both carbon and stainless steel by making it easy to identify the correct wire brush—even during operation. This helps operators get the job done faster, safer and better.

Calendar

American Manufacturing Summit 2026

Mar 17, 2026 - Mar 18, 2026

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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

Control-Expert Days 2026

May 20, 2026 - May 21, 2026

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Buyer's Guide

Cutting Tools Gear Blanks & Raw Material Gear Drives Gear Machines Gear Manufacturing Services Gears Grinding Wheels & Abrasive Tools Heat Treating Inspection Equipment Lubricants Machine Tools Resources Services Software Used Machinery Workholding & Toolholding

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

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