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Tooth root testing of steels with high cleanliness

The power density of gearboxes is continuously increased through different research activities. Besides new material developments, steel cleanliness comes to […]

Inspection & Metrology: Laser interferometry – An enabling technology for optimized automated manufacturing

Technological advances over recent years have elevated metrology from being a “necessary evil” in manufacturing scenarios to enabling technologies, allowing […]

Optimization of asymmetric tooth root generated with protuberance hob

The Direct Gear Design [1] method optimizes various parameters and elements of gear tooth geometry to achieve the required gear-drive […]

Performance and properties of a new alternative gear steel

In the ongoing strive for light weighting or power densification, high-performance clean steels are showing a significant improvement. As a […]

Opportunities of Efficiency Improvement by the Use of Hydro Lubricants

1 Introduction Although different base oil types exist in the market and are widely in use, the majority of industrial […]

Integrated Approach for Gear Testing of High-Performance Clean Steels

The power density of gearboxes is continuously increased by different research activities. Besides new material developments, the cleanliness of steels […]

Experimental tests to predict plastic gears’ lifetime

One of the major problems of plastic gears is the lack of data about their lifetime. Literature doesn’t contain numerous […]

Root cause for noise excitation in geometrically-accurate (perfect) parallel-axes gearing

Gears are extensively used to transmit a rotation from a driving shaft to a driven shaft. Depending on the gear […]

Using simulation to evaluate part green shape to reduce distortion during plug quenching

Determining the heat-treatment geometry (green shape) for complex gears is not a trivial task. Mass distribution becomes critical in determining […]

Filling Some Gaps in Spline Design Guidelines: Centering, Friction, and Misalignment

Editor’s note: At the author’s request, some statements have been removed for clarity since the article was originally published in October, […]

Methods to Determine Form Diameter on Hobbed External Involute Gears

In custom designs of external spur or helical gears, designers generally prefer a lower form diameter for greater transverse contact […]

Design features of worm gearing composed of plastic and/or powder-metal components

This article deals with worm gearings in cases when the worm-gear pair is composed either of plastic or of powder-metal […]

Lean Heat Treatment for Distortion Control

Controlling distortion is of key importance during the case hardening process for the production of gear components. By effective control […]

Inspection & Metrology: ‘We must never stand still’

Small series and prototype production at ZF Friedrichshafen AG create new challenges for quality control time and again: measurement programs […]

Tooling Workholding: A new solution for bevel gears

The creativity of the designers knows no bounds with new drive element and gear geometries. Faced with constantly increasing demands […]

Is anyone printing gears using metal additive manufacturing?

The AGMA Emerging Technology Committee wanted to look at additive manufacturing through the lens of the goal of the committee: […]

Online exclusive: How many mils is your coating?

Instantaneous handheld coating thickness gauges that can be operated by virtually any technician deliver lab-quality readings even on curved and […]

Two-Probe Pitch Inspection Method For Large Gears

A gear’s pitch (a k a index or spacing) accuracy is one of the most fundamental gear characteristics affecting its […]

Chamfer Hobbing, Perfect Timing

New gearbox developments, particularly for eDrives, are creating a whole new set of gear design and manufacturing criteria. Compact gearbox […]

Oelheld U.S., Inc.

The right product for every application!  Innovative fluid management and consequent product developments and quality management are the key for […]

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