Isotropic Superfinish Archives - REM Surface Engineering

Gear designers and manufacturers will need to review and update their tooth flank roughness specifications based on the new ISO 21920 GPS family of standards.

Changes Ahead in the Roughness Standards

Posted by Mark Michaud on Friday, May 15th, 2020 in

I have written numerous articles on tooth flank surface roughness measurement. This is such a page-turner of a subject!...

Materials Matter : Roughness Measurement Tips: Calibration, the Razor Blade Test

Posted by Mark Michaud on Tuesday, February 25th, 2020 in

If a problem is found with a contact stylus profilometer during routine check with a Rubert-Song specimen, do a little troubleshooting before sending it off for calibration and recertification....

A Comparison of Surface Roughness Measurement Methods for Gear Tooth Working Surfaces

Posted by Mark Michaud on Friday, October 25th, 2019 in

Surface roughness is a critical parameter for gears operating under a variety of conditions. It directly influences friction and contact temperature, and therefore has an impact on various failure modes such as macropitting, micropitting and scuffing...

Selecting media for optimum vibe bowl gear finishing

Posted by Bill Nebiolo on Tuesday, August 20th, 2019 in

Choosing the best media depends on structure and shape of the tooth flank, and whether media components should be abrasive, non-abrasive, or a blend....

The Impact of Surface Condition and Lubricant on Gear Tooth Friction

Posted by Christina Michaud on Thursday, November 6th, 2014 in

Frictional losses in gear boxes are of significant interest to gear box designers as these losses transform into heat. The direct result is a reduction in the fuel efficiency of the vehicle involved....

Evaluation of the Scuffing Resistance of Isotropic Superfinished Precision Gears

Posted by Christina Michaud on Tuesday, November 19th, 2013 in

The high performance required from aerospace gears places stringent requirements upon the metallurgical quality, geometry, and surface finish of mating parts....

The Reduction of Parasitic Friction in Automotive Gearbox and Drive Train Components by the Isotropic Superfinish

Posted by Bill Nebiolo on Tuesday, November 19th, 2013 in

Microscopic examination of the traditionally ground tooth surfaces of automotive transmission gears reveals a micro-roughness, and unidirectional pattern corresponding to the direction of the gear tooth grinding operation....

Chemically Accelearated Vibratory FInishing for the Elimination of Wear and pitting-Horsepower chart

Chemically Accelerated Vibratory Finishing for the Elimination of Wear and Pitting of Alloy Steel Gears

Posted by Mark Michaud on Tuesday, November 19th, 2013 in

Chemically Accelerated Vibratory Finishing is capable of refining hundreds of gears per hour to a superfinished isotropic condition....