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Drive Train Center

Drive Train Center

(DTC) - Sponsored by the Navy Manufacturing Technology (MANTECH) Program

Gear Research Institute

Gear Research Institute

(GRI) - Operated by the DTC

Institute for Manufacturing & Sustainment Technologies

Institute for Manufacturing & Sustainment Technologies

(iMAST) - Part of ARL and one of nine U.S. Navy MANTECH Centers of Excellence managed by the Office of Naval Research along with the REPTECH program.

Institute for Non-Lethal Technologies

Institute for Non-Lethal Defense Technologies

(INLDT) - established by Penn State and administrated by ARL

Gear Research Institute (GRI)

GRI Logo
Visit the GRI Website
The Gear Research Institute (GRI) is an independent not-for-profit corporation, registered in the state of Illinois. Over the last two decades, a significant amount of research and test data has been accumulated and published in a large number of reports for the sponsors. Previous published reports are available to members of the Gear Research Institute on a restricted basis (see membership info below).

The Gear Research Institute has all its research and other related activities conducted at the Applied Research Laboratory of The Pennsylvania State University. The Institute, affiliated with the ASME and the AGMA, is organized to provide and supplement gear and related technological needs by conducting research and development, consulting, analysis and testing. The Institute is a leading proponent of cooperative pre-competitive research but, when requested, also serves individual companies.

Since 1982, when it came into existence, the GRI has conducted many programs in important technology areas, some of which are listed below:

  • High Hot Hardness Gear Steels
  • Utilization of Boron Toughened Steels
  • Technology Surveys
  • Durability Testing of Gears
  • Effect of Lubricant on Durability
  • Induction Hardening of Gears
  • Effect of Surface Finish on Durability
  • Heat Treat Distortion
  • Finite Element Modeling

Test Facility

The Gear Research Institute is equipped with extensive test capabilities. These include rolling contact fatigue (RCF) testers for low- and high-temperature roller testing, power circulating (PC) gear testers for parallel axis gears with a 4-inch center distance (testers can be modified to accommodate other center distances), single tooth fatigue (STF) testers for spur and helical gears, gear tooth impact tester, and worm gear testers with 1.75 and 4-inch center distances. Extensive metallurgical characterization facilities are also available at Penn State in support of the Gear Research Institute.

Current Sponsors

The activities currently underway are under the sponsorship of the Aerospace Research Bloc which includes:

  • Avio Group (Italy)
  • Boeing (Mesa and Philadelphia)
  • Curtiss Wright Controls
  • General Electric (Aviation and Global Research)
  • Honeywell International
  • Carpenter Technology Corporation
  • Pratt & Whitney (East Hartford, CT and Quebec, Canada)
  • Rolls Royce
  • Sikorsky Aircraft
  • The Timken Company
  • REM Surface Engineering

Single-Client Sponsors

  • Acree Technologies
  • Sikorsky Aircraft
  • John Deere
  • Ormond LLC
  • Boeing-Mesa
  • Curtiss-Wright
  • Distortion Control Technologies, Inc.
  • Flender Corporation
  • Rolls Royce
  • Timken

Efforts are currently underway to establish one more research bloc. This bloc is focused on evaluating powder metals for power transmission applications. Please contact us for further details on the research projects in each of the existing and proposed blocs.

Trustees and Committees

The Gear Research Institute is governed by a tripartite board of trustees representing the membership of the Institute, the American Society of Mechanical Engineers (ASME) and the American Gear Manufacturers Association (AGMA). Each research bloc creates its own steering committee whose responsibility is to select and guide programs within a bloc.

Gear Research Institute Officers

  • President: Sam Haines (Gear Motions, Inc.)
  • Managing Director: Aaron Isaacson (ARL Penn State)

Additional Trustees:

  • Jack Masseth – Meritor
  • Robert Wasilewski – Arrow Gear
  • Neil Anderson – Pratt & Whitney (United Technologies Corp.)
  • Teik Lim Ph.D. – University of Cincinnati
  • Avinash Singh Ph.D. – General Motors
  • Bryan Lammers – Caterpillar
  • Charles Fischer – AGMA
  • Colleen Tomasello – Carpenter Technology Corp.
  • Sam Haines – Gear Motions

Types of Membership:

  • Corporate- $600 per annum
  • Individual- $50 per annum
  • Student- $10 per annum
  • Research Bloc, (please inquire)

For more information, call or write:

Gear Research Institute
Applied Research Laboratory
The Pennsylvania State University
P.O. Box 30, State College, PA 16804-0030
Phone: (814) 863-9749 Fax:(814)863-6185

Membership Information

Industrial organizations and individuals can become members of the Gear Research Institute. Membership entails the receipt of newsletters and invitations to meetings, symposiums and workshops sponsored by the Institute. Members are also entitled to access the Gear Research Institute Publications Page to order publications and reports at special prices. To become a member, please visit