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Company Profile: Canton Drop Forge

From producing buggy parts at the turn of the last century to aerospace and wind-power applications today, this company's growth reflects the evolution of U.S....

Microgeometry and Bias in Helical Gear Noise...

By: Donald R. Houser, Ph.D.

While excitation usually originates within the gear mesh, it then radiates throughout the mechanism and is amplified by the housing. Understanding this will lead to better design.
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Company Profile: Larson Forgings

Now celebrating its 113th year in business, this fourth-generation, privately-held company is the culmination of a Swedish immigrant's American dream.

Low-Cycle Bending Fatigue of AISI 9310 Steel Spur...

By: Timothy L. Krantz, Dr. Robert F. Handschuh, Bradley A. Lerch & Christopher S. Burke

This investigation—by members of the U.S. Army Research Laboratory, NASA's Glenn Research Center, and the QSS Group, Inc.—examines a raw material for steel spur...

Natural Frequencies & Modal Properties of...

By: Robert G. Parker, Ph.D.

All vibration modes can be classified into one of three types—rotational, translational, and planet modes. In this article the author provides a detailed...

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Direct Design for High-Performance Gear...

By: Dr. Alexander L. Kapelevich

For demanding applications where custom gearing is required, the Direct Gear Design method may be just the approach you're looking for. This article presents an in—depth...
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Company Profile: Aerocom Industries, Inc.

Revamped, recharged, and relocated, this Longmont, Colorado-based company is poised to finally reach its true potential as a premier aerospace and commercial supplier.

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Planetary Gear Parametric Instability

By: J. Lin

Tooth mesh contact conditions can result in parametric instability in planetary gears. The following technical article explores the causes, and discusses the cures.

Face-off: Face Hobbing vs. Face Milling

By: Dr.-Ing. Hartmut Müller

Which process is best for you? Depends on the application. Read on for an in-depth examination of the pros and cons of each.

Time to Shift Gears on Heat Treating?

By: Peter Hushek

For an in-depth examination of the current state of the heat-treating industry, who better to consult than a fourth-generation industry professional? Read on for a gear-centric...
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Company Profile: Oliver Gear

For more than a century this company has worked to build a solid reputation based on innovation, excellent customer service, and a commitment to quality.

Turbo - Abrasive Machining for Edge and Surface...

By: Michael Massarsky, Ph.D. & David A. Davidson

In addition to mechanical deburring, turbo-abrasive machining provides benefits including isotropic surfaces, improved profiles, and beneficial compressive stress.

Bending Fatigue of Surface Densified Gears

By: Salvator Nigarura, Rajesh Parameswaranand & Juan R. L. Trasorras

A technical paper discussing the effect of root densification depth and tooth loading mode on fatigue life.
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Company Profile: Iosso Metal Processes

A cutting-tool salesman saw a need and applied his academic training as a chemist to develop a new coating, resulting in a wealth of benefits to his company's...

Oil Quenching Technologies For Gears

By: Daniel H. Herring & Steven D. Balme

In order to gain the benefits of oil quenching, you must understand all of the process variables involved. In the following, two heat—treat professionals share their...

Diagnostic Tool Helps Develop Profile for...

A high-speed infrared camera with software to calibrate, freeze and record temperatures after each heat cycle is a diagnostic tool developing a process for profile hardening...

Superior Bearings for Extruder Gearboxes

By: David Martin

Recent improvements have made spherical roller thrust bearings superior alternatives to the traditional bearing types used in output shaft applications. Here's...

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Company Profile: Hydra-Lock Corporation

As the originator of hydraulic work- and tool-holding devices, this company has spent the past 60 years earning a reputation for creativity, innovation, and quality.

Gaining the Edge in CBN Tool Performance

By: William Shaffer

EMG edge preparation, developed by Conicity Technologies, can be applied to nearly any material to improve the performance of a wide variety of cutting tools.

Coating Applications for Spur Gears

By: Timothy L. Krantz, Clark V. Cooper, Dennis P. Townsend & Bruce D. Hansen

The following paper describes details concerning the increased surface fatigue lives of spur gears by application of a coating.
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Company Profile: Mabry Castings Ltd.

With a history of dedication to service & quality, this company is poised to provide gear manufacturers with the castings they need to ensure success.

Comparing Castings and Forgings

By: Tim Zwirlein

When designing large structural components it's critical to make an informed decision between castings and forgings. The following paper by Rexnord provides an in-depth...

New Links in the Production Chain

By: Sascha Ungewiss & Bill Miller

As part of the Kapp Group, Niles has designed machines that decrease the cost per piece while increasing the quality of the finished parts.
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Workholding Made Simple

By: David A. Stokely

Overly complicated designs can sometimes prove detrimental, especially when it comes to workholding devices. The following describes how simplicity can lead to better outcomes.

Taking Hold with Hydraulics

By: Sean Cresent & Robert Laube

Hydra-Lock has a long history of manufacturing custom-designed hydraulic workholding and toolholding devices that are constantly evolving to meet its customer's needs.

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Company Profile: Butler Gear

Everyone encounters obstacles, but the real challenge is in whether you cave in or carry on. This profile tells the story of a man who chose the latter—time and...

Determining Gear Efficiency

By: Relly Victoria Petrescu, Narcisa Popescu & Florian Ion Petrescu

By analyzing certain parameters, the authors present an original method for determining the efficiency of gears.

The Art and Science of Broaching

By: Chris Van De Motter

To truly understand the benefits of broaching it's important to take many things into consideration, including the various methods, materials, and machines involved.

Maximizing Gearbox Performance

By: Jeff Biamonte & Tim Nadasdi, Ph.D.

By choosing the proper lubricant, gearbox performance is improved. Read on to learn about ExxonMobil's special formulation for gearbox applications.

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Acoustic Properties of Industrial Machinery: Part...

By: Bill Bradley, Richard Schunck & Jules DeBaecke

The manufacturing environment can be a fairly noisy place, and these sounds can both cause and signal problems. The following provides a greater understanding of this issue.

Gear Inspection: Troubleshooting Tips

By: Dennis Gimpert

You inspect your gears to make sure you're producing the best product you possibly can. Should you detect a problem, this checklist will help you quickly determine the...