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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.

Single-Flank Testing for Modern Gear Production

Detecting gear manufacturing deviations through advanced single-flank testing

The Edge of Efficiency

Atlanta Gear Works receives grinding wheel assist from Weiler Abrasives

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Technical Articles

Interchangeability of Gears

An excerpt from Gear Technology Solutions by Dr. Hermann J. Stadtfeld covering when and how individual bevel gear members can be replaced during gearbox service without changing the mating gear.

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Water Spray Quenching—A New Intensive Quenching Process for Case Hardening of Gears

Water spray quenching achieves heat transfer coefficients up to 4,000 W/(m²K)—nearly double conventional oil quenching rates—enabling potential material substitution and tailored quench intensity for complex gear components.

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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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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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Design

The objective of this paper is to improve the methodology for determining the tooth flank temperature. Two methods are proposed for assessing scuffing risk when applying AGMA 925 for high-speed gears. Both methods provide similar results.

Grinding

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.

Heat Treating

Quality control, EV components, energy consumption and material influences are just a handful of topics being discussed in heat treating today. New heat treat methods and global trends will be the topic of conversation later this year at Heat Treat 2023. Here’s a round-up of some stories circulating across key market segments.

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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 Motion + Power Manufacturers Alliance (MPMA) announces the release of a new industry guideline addressing the rapidly evolving EV landscape: AGMA 948-A26, Electrified Vehicle Drivetrains. This provides industry guidance on electrified drivetrains for vehicles, including hybrid electric (HEV), battery electric (BEV or EV), or plug-in hybrid electric (PHEV) vehicles, with the prime mover power source or sources as any combination of battery, fueled ignition engine, and/or fuel cell. These can generally be referred to as xEVs.

Product News

SMW Autoblok has recently introduced new long-stroke models to the MOTIACT lineup of mechatronic grippers. The MX-L 335 compact long-stroke and MX-L 520 long-stroke grippers are designed for EOAT (end-of-arm tooling) automation with higher workpiece weights and are suitable for use in machine tending, material handling, assembly, and other applications. 

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

TPS (Turbomachinery & Pump Symposia) 2026

Sep 22, 2026 - Sep 24, 2026

Furnaces North America (FNA) 2026

Oct 12, 2026 - Oct 14, 2026

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