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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.

MPMA and Federtec Bridge the Global Skills Gap

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

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

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Technical Articles

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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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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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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Design

The main objective of this study is to perform an experimental evaluation of the structural model of a five-planet first planetary stage from a modern 6MW wind turbine gearbox.

Grinding

For the transmissions of electric vehicles to develop the desired high torque under all driving conditions, a very large gear ratio is needed, which requires high speeds. And to ensure sufficient momentum at all speeds and enable the driver to accelerate without shifting gears, the electric drive must achieve up to 15,000 rpm, which is about three times that of a typical combustion engine. This puts a lot of strain on the rotor shaft. The manufacturers of rotor shafts are thus facing new challenges, such as the significantly lower shape and position tolerances and the need for greater machining precision.

Inspection

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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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

Forest City Gear, a manufacturer of fine- and medium-pitch custom gears, announced that Kika Young, president and shareholder, has joined the Greater Rockford Chamber of Commerce (GRCC) board of directors. In addition to her board role, Young will contribute her expertise as a member of both the GRCC’s Talent Committee and the Rockford Area Aerospace Network (RAAN).

Product News

This installation marks the second all-metal hot zone vacuum furnace added to the climate-controlled processing area at Solar Atmospheres’ Hermitage, PA facility. The new system significantly expands the company’s capacity to heat treat highly sensitive materials such as precipitation-hardened stainless steels, nickel-chrome-based superalloys, titanium, and niobium.

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

Control-Expert Days 2026

May 20, 2026 - May 21, 2026

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