Heat treatment decisions for gears are often reduced to a surface hardness number. That shortcut can work for mild duty, but it frequently breaks down when contact fatigue, scuffing risk, shock events, distortion limits, or finishing constraints become dominant. Many late-stage issues trace back to the same pattern: the duty case is incompletely defined, the process window is underestimated, or verification confirms “a number” without proving the full property profile.
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.
.
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.
.
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.
.
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.
.
The toothed belt and pulley system known by the designation T, which has been selected as an example within this paper, was developed in the 1950s and standardized first in DIN 7721 (1977) and then in ISO 17396:2014. In this case study, the authors check if a single hob can properly cut T5 profile pulleys with 25 and 30 teeth—and if
so, define the range of the number of teeth covered by this hob.
From the outside, Gallmar Industries, nestled into an Oshkosh, WI, neighborhood, looks like any unassuming, medium-sized gear shop. Then take a plant tour with Gallmar’s VP of Operations Kenan Zolota—and prepare to be amazed. The facility stretches on like the Army’s warehouse at the end of Raiders of the Lost Ark, with everything from gear cutting to heat treat, gear grinding to inspection, all under one roof. Gallmar’s breadth of product line is in evidence too: defense-related transmission gears, 60-in. diameter internal gears for mining equipment, axle components for fire/ rescue trucks five feet in length, right down to a bin of brass ammunition casings that Zolota says are a special order.
The arrival of Gleason’s Hard Finishing Cell (HFC) in 2018 represented a paradigm shift in the way automotive transmission gears and gears for e-drives, could be produced in high volumes. Now, for the first time, 100 percent inspection of every gear, and every gear tooth was possible in-process, without impacting the high speeds at which these gears need to be hard finished. Identifying, and correcting for, conditions that create unacceptable noise behavior in these gears, on the fly, was finally a reality too.
Heat Treat 2023 is the Heat Treating Society’s 32nd conference and expo for heat treating professionals featuring three days of face-to-face networking opportunities with approximately 200 heat treat exhibitors/companies. All the top heat-treating companies will offer the latest research and industry insights during more than 100 technical programs. This year’s show includes a VIP-guided industry tour, as well as student/emerging professionals initiatives, including free college student registration, Fluxtrol Student Research Competition, and the ASM Heat Treating Society Strong Bar Student Competition. Heat Treat 2023 is colocated with Motion + Power Technology Expo 2023 with access to additional exhibitors. The event takes place October 17–19, 2023 at Huntington Place in Detroit.
Deburring gears is dusty, repetitive, and hard to staff. The OB7 cobot from Productive Robotics automates it with quick setup and no programming required. Consistent finish on every part, built in the USA. See the full cobot deburring package and request a quote.
Download the whitepaper to learn how lifecycle management improves tool performance, reduces downtime, and drives measurable cost savings.
This white paper explores how the use of an automatic tool change system can boost productivity in the grinding process. When manufacturing large gears, the demands regarding surface quality of the ground tooth flanks are increasing.
Join Kevin Meister and Troy Kirby from Productive Robotics, for a practical look at moving from hand deburring to cobot-automated in their own facility and many others.
Discover four diagnostic enhancement tools that move RX® endothermic gas atmosphere generator operations from preventative to predictive maintenance. Learn how monitoring dew point by retort, comparing equal flow, tracking tube performance, and measuring outlet temperatures prevent costly failures while ensuring consistent, high-quality carrier gas production.
At American Precision Gear, quality isn’t just a priority — it’s the foundation of everything they do. The shop specializes in high-precision miniature gears for aerospace, defense, and medical applications, where the strictest tolerances are non-negotiable. Helios Gear Products partnered with American Precision Gear to integrate the MZ 1000 D-Drive into their production.
Southern Gear will install an advanced INDEX G320 Turn-Mill Center to produce medium-sized aerospace gears with high complexity and precision on a single machine.
Kapp Niles offers tailor-made solutions for the precision grinding, measuring and documentation of gears and profiles, presented as part of its Trust in Technology campaign.
Jun 14, 2026 - Jun 18, 2026
The Manufacturing Engineering Division (MED) of ASME sponsors the Manufacturing Science and Engineering Conference (MSEC) every June. MSEC (State College, PA) is the annual forum for the exchange of advanced manufacturing research knowledge. It is intended to disseminate the most recent developments in manufacturing research through technical presentations, poster sessions and panel sessions. The event is hosted by Penn State University.
Jul 15, 2026 - Jul 16, 2026
Jun 9, 2026 - Jun 10, 2026
Contact | Privacy Policy
©2026 Power Transmission Engineering
Current Issue
Current Issue
Archives
Subscribe
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 & ToolholdingThe Gear Industry Buyers Guide is your complete directory of suppliers in the gear industry, including great companies like these.
VIEW ALL