Case Study: How Advanced Gearbox Testing Drove the Need for the Lost Foam Casting Process
For decades, powertrain test systems incorporated custom test stand gearboxes constructed with fabricated gearbox housings. In some cases, fabricated housings […]
Developing an Energy-Efficient Industrial Gear Oil
Gearboxes found in mining and manufacturing sectors encounter a variety of harsh conditions. Heavy loading, longer duty cycles, and high […]
Influence of Contact Conditions on the Onset of Micropitting in Rolling-Sliding Contacts Pertinent to Gear Applications
Micropitting is a type of surface damage that occurs in concentrated, rolling-sliding contacts, such as those between gear teeth, through […]
Optimizing Gear Macro and Microgeometry To Minimize Whine and Maximize Robustness for a Diesel Engine Application
The desire for engines that provide more torque and power is driving higher loads into the gear train. At the […]
Pitch Factor Analysis for Symmetric and Asymmetric Tooth Gears
In comparison with traditional gear design based on pre-selected, typically standard generating rack parameters and its addendum modification also known […]
Calculating the Risk of Micropitting Using ISO Technical Report 15144-1:2014 – Validation with Practical Applications
For high-performance gear transmissions, case-carburized and ground gears are used in most cases. International standards have been developed to provide […]
A New Class of Industrial Gear Oil
In 2013, the global lubricant market was just over 40 million tons, comprised of 58-percent automotive lubricants and 42-percent industrial […]
Analysis and Optimization of Asymmetric Epicyclic Gears
The design objective of asymmetric tooth gears is to improve performance of the primary drive flank profiles at the expense […]
An Experimental Evaluation of the Procedures of the ISO/TR 15144 Technical Report for the Prediction of Micropitting
Recently, ISO 15144 [1] has been approved by ISO as a technical report that presents an analysis procedure, which is […]
Prediction of Airborne Radiated Noise from Lightly Loaded Lubricated Meshing Gear Teeth
Automotive transmission gear noise has received increased attention in recent years. The phenomenon is considered as a major noise source […]
An Improved Load-Equalizing Means For a Multi-Flow Gear Train
This paper relates to the load-equalizing capabilities of planetary gearboxes, and more generally, addresses the load-equalizing capabilities of multi-flow gear […]
Gear Tooth Root Stresses of a Very Heavily Loaded Gear Pair
For aerospace applications, there is a high premium on minimizing the mass of all components while meeting operational and safety […]
Optimizing Innovation in Driveline Design Processes
In the driveline industry, innovation can only be achieved when the use of new or novel technologies or methods are […]
Effective Methods for Checking Grinding Quality
Grinding is often the last process in the manufacture of high-quality, high-load-bearing gearbox components. High-load-bearing gears are hardened for greater […]
Case Study: Circle Gear and Machine Company and Pequea Machine Inc.
In a joint effort to bring manufacturing back to the U.S., also known as reshoring, a relationship was formed between […]
Layout of the Gear Micro Geometry
The last phase in sizing a gear pair is to specify the flank line and profile modifications, also known as […]
The Impact of Surface Condition and Lubricant on Gear Tooth Friction
The most exhaustive experimental study quantifying gear tooth friction is by Yoshizaki [1], in which spur gears with various geometries […]
Influence of Central Members Radial Support Stiffness on Load Sharing Characteristics of Compound Planetary Gearsets
Abstract In this study, a non-linear dynamics model of Ravigneaux compound planetary gearsets which adopts the intermediate floating component is […]
The Efficiency of a Simple Spur Gearbox — Thermally Coupled Lubrication Model
Introduction The efficiency of drivetrain components is quickly becoming a significant research area pushed by the intensifying quest for improved […]
Application of ICME to Optimize Metallurgy and Improve Performance of Carburizable Steels
Introduction QuesTek Innovations LLC (“QuesTek”) of Evanston, IL uses its proprietary Materials by Design® expertise and technology in conjunction with […]
