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 2011 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.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AS20708/500AAEROSPACESTANDARDAS20708/500 REV. A Issued 1999-07 Revised 2011-07Superseding AS2
5、0708/500 Synchro, Torque Receiver, Type 26V-10TR4 FSC 5990 RATIONALE This Revision consists of a 5 (five) year review, which provides updates to current format and references. NOTICE This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements
6、 for acquiring the Synchros described herein shall consist of this specification and the latest issue of SAE AS20708. Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AS20708/500A Page 2 of 3SPLIN
7、E DATA 1/TEETH 13 PITCH 120 PITCH DIAMETER 0.1083 +0.0000 -0.0020 OUTSIDE DIAMETER 0.1247 +0.0000 -0.0005 PRESSURE ANGLE 20 DEGREESROOT DIAMETER MAX. 0.089 TOOTH FORM FULL DEPTH INVOLUTE 1/ The end function of this spline is for positive rotational fastenings. It is not to be used as a gear. This sp
8、line shall be inspected using the Go-No Go spline ring gage MS90406. NOTES: 1. Perpendicularity and concentricity shall be measured with the unit in a vertical position supported by the shaft. Then thehousing rotated. 2. Runout of feature “-A-” (smooth portion) of shaft shall not exceed 0.0008 TIR.
9、3. End play and radial play shall be measured during the reversal of the following loads: End play 0.5 (1/2) Pound Radial play 0.5 (1/2) Pound 4. The terminal lead wires shall depart through the back surface of the terminal end of the synchro in any acceptable manner. 5. The following list of hardwa
10、re, when required, MS17186-5 drive washer 1 (one) required, MS17187-1 nut 1(one) required, shall be packaged in a ventilated envelope made of material having a PH value of 6-8, that is compatible with the weight of the contents. Then the packaged hardware shall be placed in the unit synchro package.
11、 For information only, see synchro clamp MS17183. 6. Minor variations of unit configuration are permitted for undimensioned design detail. 7. Housing shall be of aluminum material. 8. Unless otherwise specified, dimensions are in inches. Tolerances on decimals 0.005, angles 5 degrees. FIGURE 1 SYNCH
12、RO, TORQUE RECEIVER, TYPE 26V-10TR4A .001 TIR.062.062.062SEETABLE 2.840DIA.294.260MIN.FULL THREAD DEPTHTHREAD RUNOUT.166MIN.1247 DIAMETER(2)MIN.231MAX.177 MINFULL DEPTH OF SPLINE+.0000-.0005NO.5 (.125)-44UNF-2AMAJOR DIA .120+.000- .002.937 DIA+.000- .001.8123 DIA+.0000- .0005.5000 DIA+.0000- .0005ID
13、ENTIFICATION TOBE READ FROMTERMINAL END.038LL1.240 MAX1R2R1S1S2S3MARK ON HOUSING IS TO MATCH SHAFTMARK WITHIN 10 WHEN MOTOR IS SETAT APPROXIMATELY SYNCHRO ZERO, ANDWILL BARE NO RELATION TO THE CENTERLINES SHOWN ON THIS DRAWING45 CHAMFER.020.0900 DIA+.0000- .0005.025UNDERCUT:.010 WIDE X .005 DEEP-A-2
14、64UNF-2B-.0625 MAX.DEPTH3 HOLES EQUALLY SPACEDON .678 .003 DIA.Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE AS20708/500A Page 3 of 3TABLE 1 REQUIREMENTS Requirement Value Unit Tolerance Frequ
15、ency Primary Voltage Primary Current Primary Power Impedance: Zss Impedance Angle: Zss Transformation Ratio Phase Shift Receiver Error Synchronizing Time 30 2 Synchronizing Time: 177 2 Torque Gradient Radial Play End Play 400 26 142 .6211 15 .454 7.560 242200 .001 .002 - .005 Hz volts milliampswatts
16、 - - degrees minutesseconds seconds mg-mm inchesinches1% 1% maximum nominal nominal nominal 2% maximum maximum maximum maximum minimum maximum min. max. Temperature Rise 20.0 degrees (C) maximum Variation of Voltage (+10%) and Freq. (-5%) 1.4 watts maximum Part number: M20708/500 plus applicable da
17、sh number from Table 2. TABLE 2 MILITARY PART NUMBER VARIANT CHARACTERISTICS Dash No. ShaftDiameter ShaftStyle Terminal End L Dimension L Reference Free Shaft Length 001 .0900 Plain & Slotted 18” Wire Leads .321 .015 .283 .015 002 .1247 Splined 18” Wire Leads .500 .015 .462 .015 PREPARED BY SAE COMMITTEE AE-7A - GENERATORS/CONTROLS/MAGNETIC DEVICES Copyright SAE International Provided by IHS under license with SAENot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
