1、_ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising there
2、from, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2010 SAE International All rights reserved. No part of this publication m
3、ay be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-4970 (outside U
4、SA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedbackon this Technical Report, please visit http:/www.sae.org/technical/standards/J2873_201007SURFACEVEHICLERECOMMENDEDPRACTICEJ2873 JUL2010 Issued 2010-07 Electric Drive Coolin
5、g Fan Motor Mounting RATIONALE This document is intended to encourage commonization. The present state is that this attachment varies with the Original Equipment Manufacturer (OEM) and Supplier. In general, the variation is arbitrary, adding cost but not value. 1. SCOPE This SAE Recommended Practice
6、 is applicable to Electric Drive Cooling Fan Assemblies used in Light Duty vehicle cooling systems (typically, passenger cars and light duty trucks). This document outlines the Electric Drive Cooling Fan Motor Mounting interface characteristics such that a common standard is possible. 1.1 Purpose Th
7、is Recommended Practice is intended to document the recommended set of standard mounting interface dimensions for attachment of electric cooling fan motor to fan shroud. 2. REFERENCES 2.1 Applicable Documents 2.1.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale
8、, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org.SAE J635 Fan Hub Bolt Circles and Pilot Holes 3. DEFINITION The Recommended Practice provides for three families of bolt circle diameters, essentially a small, medium and large. All of the bolt circ
9、les have the attaching holes spaced at 120 degree intervals and all of the attaching holes are the same diameter. From a general application standpoint, the intent of defining three families promotes the optimum standardization, while recognizing that there still is need to accommodate a broad range
10、 of application. By way of example, the SMALL bolt circle would typically apply to low-power 2-pole motors used in small car cooling applications or for supplemental or “boost” fans, typically at a power level less than 150 W. The MEDIUM bolt circle would accommodate a mainstream medium power 4-pole
11、 motor typically covering a range of 150 to 500 W. The LARGE bolt circle would apply to very high power 4-pole brush type motors or their brushless equivalent exceeding 500 W. There may be argument that there are applications where an attachment scheme using more than three bolts and having spacing
12、different than equal as well as encompassing diameters different from what is recommended here. However, the intent of this Recommended Practice which involved input from the various suppliers was to create a simple basis for communization that would apply to 85% of both the Supplier and OEM users.
13、Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE J2873 Issued JUL2010 Page 2 of 4Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permi
14、tted without license from IHS-,-,-SAE J2873 Issued JUL2010 Page 3 of 4TABLE 1 - FAN MOTOR ATTACHMENT KEY DIMENSIONS Bolt Circle Diameter mmMounting Hole Diameter mmMounting Hole Spacing degrees Small 100 6.0 120 Medium 120 6.0 120Large 170 6.0 120 TABLE 2 - EXAMPLE OF TYPICAL FAN MOTOR MOUNTING PROV
15、ISIONS Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE J2873 Issued JUL2010 Page 4 of 44. NOTES 4.1 Marginal Indicia A change bar (l) located in the left margin is for the convenience of the user
16、 in locating areas where technical revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. PREPARED BY THE SAE COOLING SYSTEMS STANDARDS COMMITTEE Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
