400 Commonwealth Drive, Warrendale, PA 15096-0001 U.S.A. Tel: (724) 776-4841 Fax: (724) 776-5760 Web: www.sae.org SAE TECHNICAL PAPER SERIES 2002-01-1370 Off-Highway Truck Wheel Bearing Performance Testing Rich Browner The Torrington Co. Reprinted From: Transm ission and Driveline Systems for Off-Highway (SP-1770) SAE International Off-Highway Congress co-located with CONEXPO-CON/AGG Las Vegas, Nevada March 19-21, 2002Downloaded from SAE International by Brought to you by the University of Kansas (Technical reports: 1998 to Present), Monday, August 27, 2018The appearance of this I SSN code at the bottom of this page indicates SAE’s co nsent that copies of the paper may be made for personal or internal use of spec ific clients. This consent is given on the condition, however, that the copier pay a per article copy fee through the Copyright Clearance Center, Inc. Operations Center, 222 Rosewood Drive, Danvers, MA 01923 for copying beyond that permitted by Sections 107 or108 of the U.S. Copyright Law. This consent does not extend to other kinds of copying such as copying forgeneral distribution, for advertising or promotional purposes, for creating new collective works, or forresale. Quantity reprint rates can be obtained from the Customer Sales and Satisfaction Department.To request permission to reprint a technical paper or permission to use copyrighted SAE publications in other works, contact the SAE Publications Group. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior wr itten permission of the publisher. ISSN 0148-7191 Copyright © 2002 Society of Automotive Engineers, Inc. Positions and opinions advanced in this paper are those of the author(s) and not necessarily those of SAE. The author is solely responsible for the content of the paper. A process is available by whic h discussions will be printed with the paper if it is p ublished in SAE Transactions. For permission to publish this paper in full or in part, contact the SAE Publications Group. Persons wishing to submit papers to be c onsidered for presentation or publication thr ough SAE should send the manuscript or a 3 00 word abstract of a proposed manuscript to: Secretary, Engineering Meetings Board, SAE. Printed in USAAll SAE papers, standards, and selected books are abstracted and indexed in theGlobal Mobility DatabaseDownloaded from SAE International by Brought to you by the University of Kansas (Technical reports: 1998 to Present), Monday, August 27, 20182002-01-1370 Off-Highway Truck Wheel Bearing Performance Testing Rich Browner The Torrington Co. Copyright © 2002 Society of Automotive Engineers, Inc. ABSTRACT Large mining truck manufacturers have achieved enhanced performance of the wheel bearings on their off-highway construction equipment vehicles using a unique Transducer Bearing from the Torrington Company to measure loads during truck operations. They have increased the life of the bearings by optimizing operating preload, and have gained an in-depth knowledge of bearing loading during the various portions of the truck duty cycle. This will increase the mean time between failure (MTBF) for these vehicles, improving uptime during mine operation and reducing failure costs for its users. This procedure can be used to identify inadequate bearing support structure, validate any required redesigns, and provide insights to optimize the life of the bearing in the measured load conditions. This paper provides results from the first testing of bearing loads in trucks using an instrumented bearing and a Torrington Co. patented data analysis algorithm. The instrumented bearing and data analysis algorithm form a valuable tool for determining applied loads in-situ, and can be utilized on any equipment or processes where bearing loads need to be measured. In fact, this technology could help users gain insight into the operating conditions in many kinds of rotating eq