DECEMBER 2013 MORE Oems Checking Their Bearings
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® DECEMBER 2013 MORE OEMs Checking their Bearings For Couplings Only: What’s New? Mounted Bearings: Get What You Pay For? 2013 PTE BUYERS GUIDE From Actuators and Belt Drives to Couplings and Gear Drives Technical [ Ask the Expert: Gear Tooth Crowning: How Much is Enough? ] [ Ways to Benchmark a Linear Motion Device for Le$$ ] [ Measuring TINY Bearings ] www.powertransmission.com Build your panel for less with AutomationDirect Metal, Non-Metallic and Disconnect Enclosures We’ve got what you need to build your control panel. With direct prices, fast shipping and free tech support, you can count on us for the best value in automation. We’ve lowered the price of every enclosure we sell to help your budget even more! 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All rights reserved. 1-800-633-0405 the #1 value in automation 1311-PowerTransmissionEngineering-Enclosures-MAG.indd 1 10/25/13 1:45 PM CONTENTS ® DECEMBER 2013 [20] [24] 2013 BUYERS GUIDE [28] Buyers Guide: Categories From actuators and belt drives to couplings and gear drives. [50] Buyers Guide: A to Z A handy reference index for every supplier listed. FEATURE ARTICLES [20] Bearing Quality Begins TECHNICAL ARTICLES with the Source [72] Measuring Miniature and Instrument Source testing of custom Ball Bearings with Hand-Held bearings is critical for OEMs. Micrometer PKB primer shows you how. [24] Custom Coupling Combos A look at what’s new. [74] Ask the Expert Adapting spur teeth for radial angle of teeth [86] Mounted Ball Bearings in the crown. Value-added or price-padded? [76] The Induction Motor An ode to “the workhorse of industry.” [78] Measuring the Motion How to cost-effectively determine key performance characteristics of a linear motion system. Randall Publications LLC makes every effort to ensure that the processes described in POWER TRANSMISSION ENGINEERING conform to sound engineering practice. Neither the authors nor the publisher can be held responsible for injuries sustained while following the procedures described. Postmaster: Send address changes to POWER TRANSMISSION ENGINEERING, 1840 Jarvis Avenue, Elk Grove Village, IL, 60007. ©2013 Contents copyrighted by RANDALL PUBLICATIONS, LLC. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage and retrieval system, without permission in writing from the publisher. Contents of ads are subject to Publisher’s approval. DECEMBER 2013 Power Transmission Engineering 1 CONTENTS CALL FOR PAPERS! Are you sitting on an idea for VOL. 7, NO. 6 a technical paper but wonder- ing where to present it? Do you [04] PTExtras have one already written, sitting Latest online videos, e-mail newsletters on your desk, gathering machine and social media dust? [06] Editorial PTE on a Growth Path How about Power Transmis- sion Engineering? We are always [08] Product News looking for gearing- and power What’s new and worth knowing about transmission component-relevant [82] Global Industrial Outlook technical papers for publication It was ugly – but it’s looking better in the magazine and in its digital [88] Industry News version. Having your work appear The who, what and why in Power Transmission Engineering guarantees you an audience of [94] Calendar the most experienced and dis- Industry when and where info criminating industry players. You [95] Ad Index say your work has not been peer- How and where to contact every reviewed? Not a problem, as we Advertiser in this issue are lucky—and thankful—to have [96] Power Play on-hand some of the most expe- Amazing automatons rienced and brilliant minds in the industry—our technical editors. So if your work “passes muster” and is published, you’ll know you were reviewed by the best—and most demanding. Chances are you’ll be creating the paper under the auspices of the company for whom you work or own, or for one of the various industry-relevant associations. That means they as well will bask ® DECEMBER 2013 in the reflected glory that accrues MORE OEMs with publication in Power Trans- Checking their Bearings For Couplings Only: What’s New? mission Engineering. Mounted Bearings: Get What You Pay For? 2013 PTE BUYERS GUIDE For publication guidelines and From Actuators and Belt Drives to Couplings and Gear Drives Technical more information, please contact [ Ask the Expert: Gear Tooth Crowning: How Much is Enough? ] [ Ways to Benchmark a Linear Motion Device for Le$$ ] Jack McGuinn at jmcguinn@pow- [ Measuring TINY Bearings ] ertransmission.com. www.powertransmission.com 2 Power Transmission Engineering DECEMBER 2013 WWW.POWERTRANSMISSION.COM]———— More torque. Less friction. Optimize gearbox units with upgraded SKF Explorer bearings A robust solution for harsh and demanding gearbox environments, upgraded SKF Explorer bearings enable a gear unit to transmit more torque, sustain higher external loads, or even be downsized to improve cost effi ciency. In addition, these bearings provide substantially lower friction than other bearings. In fact, the friction can be reduced by 30% compared to the competition, enabling the gearbox to run cooler and more effi ciently. With expertise in bearings, sealing, and lubrication solutions, SKF engineers can add value to the complete gear unit by enhancing reliability and performance, while improving the cost-effectiveness of the complete solution. For more information, please visit skf.com or contact your Enhance gear unit reliability and improve performance local SKF representative. Upgraded SKF Explorer self-aligning bearings have enhanced wear and contamination resistance, and are better able to sustain external loads – up to 20% more load for a given life of a gear unit. The Power of Knowledge Engineering PTExtras www.powertransmission.com PTE Videos: The Maxon Randall Publications LLC DCX motor line offers significant 1840 Jarvis Avenue Elk Grove Village, IL 60007 power density (torque/motor Phone: (847) 437-6604 volume ratio) and robust Fax: (847) 437-6618 construction with a worldwide patented ironless rotor. Check EDITORIAL out a behind-the-scenes video Publisher & Editor-in-Chief Michael Goldstein of the Maxon DCX currently at [email protected] www.powertransmission.com. Managing Editor & Associate Publisher Randy Stott LinkedIn: Hannover Messe 2014 will be presenting [email protected] the fourth Robotics Award in April. Join PTE’s LinkedIn Senior Editor page for information on the products, Jack McGuinn breakthroughs, solutions and projects [email protected] that will be considered for this award. Senior Editor Deadline for entry is February 21, 2014 Matthew Jaster (www.linkedin.com/groups?home=&gid=29 [email protected] 50055&trk=anet_ug_hm). Editorial Consultant Paul R. Goldstein ART Art Director David Ropinski [email protected] ADVERTISING Advertising Sales Manager & Associate Publisher PTE Facebook: The 2014 NFPA Dave Friedman Annual Conference takes place February [email protected] 3-5 in Florida. For registration, schedule Materials Coordinator and additional information log-on to Dorothy Fiandaca the PTE Facebook page (https://www. [email protected] facebook.com/pages/Power-Transmission- CIRCULATION Engineering/109042075794176). Circulation Manager Carol Tratar [email protected] RANDALL PUBLICATIONS STAFF President Twitter: The PTE Twitter feed Michael Goldstein keeps readers up-to-date on the latest Stay Connected with Accounting products and services available to the Luann Harrold PT community. Recent products from Social Media Aerotech, Voith, SKF, AutomationDirect Follow us on Twitter and Steinmeyer are currently online. Join twitter.com/#!/PowerTransMag us at https://twitter.com/PowerTransMag. Ask the Expert: Do you have a question about gears, bearings,