Most gearbox repair follows a familiar sequence. A unit shows up damaged, the shop measures what’s worn, makes replacement parts, reassembles, and ships it back. Scott Franks, P.E., spent decades inside that world at Lufkin Industries and came to believe it wasn’t enough.
This article demonstrates why bevel gears are designed with a zero sum of profile shifts—showing that independent shifts merely replicate what a modified pressure angle already achieves—and explains the practical benefits of using conical generating gears for tooth profile crowning.
.
This study investigates how manufacturing-related geometry deviations in the tooth root area affect gear bending strength calculations, demonstrating that accounting for measured tooth contours rather than nominal geometries is essential for accurate material comparisons in fatigue testing.
.
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.
.
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.
.
Variable loads resulting from a working process, starting process, or operation near a critical speed will cause varying stresses at the gear teeth of a drive system. The magnitude and frequency of these loads depend upon the driven machine, the motor, the dynamic mass elastic properties of the system, and other effects.
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.
Zahnradfertigung OTT GmbH & Co. KG was the first company to install the new fully automatic CNC-controlled P 152 precision measuring center from Klingelnberg in its ultra-modern machine park.
Gas carburizing has been around for a long time. One could argue that gas carburizing is the most common heat treating process. Heat treaters performing gas carburizing are often characterized by a dirty environment, hazy surroundings, and that “smell.” While the product quality may be acceptable, gas carburized parts do come with some challenges, like excessive intergranular oxidation (IGO) or intergranular attack (IGA), which is often ground off. Low-pressure carburizing (LPC) has proven to be a much cleaner and very capable alternative process. Most furnace companies have combined LPC with high pressure gas quenching, which moved carburizing from the dark back room to a relatively “clean room” environment. However, there is still a strong need for oil quenching, which is the common feature of the long used standard integral-quench (IQ) furnace.
Gleason's Closed Loop System with robot or cobot loading now fully automates the measurement and correction process in gear production. Automatically prompting corrections on connected production machines, the GMSP series not only reduces human error in repetitive tasks, it also increases utilization of inspection equipment up to 90%.
TfG’s RGC 350 Radial Chamfering Machine from Machine Tool Builders produces defined, reproducible chamfers and ‘perfect’ teeth every time. The continuous, high-speed cutting process works wonders even on workpieces with interfering contours. What used to be slow, painful and expensive is now fast, painless, and perfect.
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.
The LC 280 DC gear hobbing machine from Liebherr is designed for precise gear cutting up to module 4.5 mm. It combines high productivity with advanced technology, featuring simultaneous FlexChamfer for efficient deburring and chamfering during the hobbing process.
Forest City Gear announced the retirement of Jeff Mains, Director of Technical Operations, following many years of dedicated service and leadership within the company. Mains’s transition from his full-time role went into effect on Friday, May 29.
Machine Tool Builders, Inc. (MTB) now offers SMG's new SH550 CNC Vertical Gear Hobbing Machine, expanding the SH Series to accommodate workpieces up to 570 mm in diameter and a swing of up to 750 mm (22.5 in. / 29.5 in.). With the addition of the SH550 at the upper end and the SH210 as the smallest model in the line, SH Series machines cover production needs for small-, medium-, and coarse-pitch gears, with pitch capability to 3.2 DP or Module 8 as standard.
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.
Sep 22, 2026 - Sep 23, 2026
Oct 12, 2026 - Oct 14, 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