1967_2017_scan.pdf

USA STANDARD KEYS AND KEYSEATS USAS 517.1-1967 FOR PLEASE ASME MANUAL AS-11-$mor The American Society of Mechanical Engineers THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS United Engineering Center 345 East 47th Street New York,N.Y.10017 Provided by IHS Markit under license with ASME U SA S TA N DA RD This USA Standard is one of nearly 3000 standards approved as American Standards by the American Standards Association.On August 24,1966,the ASA was re-constituted as the United States of America Standards Institute.Standards approved as American Standards are now designated U SA Standards.There is no change in their index identification or technical content.UDC 621.886.6 Copyrlght,1968,by THE.AMERlCAN SOCIETY OF MECHANICAL ENGINEERS Prlnted in U.S.A.Provided by IHS Markit under license with ASME Foreword T HE individual USA Standards on Keys were firsr issued in the late 1920s.These were consolidated with the shafting standards in the 1934 publication,Standard Shafting and Stock Keys.A revised issue was published in 1943 and withdrawn in 1955 as it was not being sufficiently supported.However,a separate standard on Woodruff Keys,Keyslots,and Cutters (B17f-1930)was reaff irmed in 1955.In 1962 the USA Standards Committee B17 was reactivated and a sub-committee developed and established this standard based on current in-dustry standards.Following approval by the USA Standards Committee B17 and the sponsor,the proposed revision was approved on September IS,1967 by the USA Standards Institute,and designated B17.1-1967.111.Provided by IHS Markit under license with ASME USA Standards Committee B17 Keys and Keyseats OFFICERS U.P.Jennings,Chairman Roger Daniels,Secrefary COMMITTEE MEMBERS AMERICAN GEAR MANUFACTURERS ASSOCIATION G.L.Scott,American Gear Manufacturers Association,Washington,D.C.D.F.Wild,General Electric Company,Paterson,New Jersey AMERICAN SOCIETY OF MECHANICAL ENGINEERS,THE U.P.Jennings,E.I.DuPont de Nemours&Company,Inc.,Wilmington,Delaware AMERICAN SOCIETY OF TOOL AND MANUFACTURING ENGINEERS W.M.Houck,New Holland Machine Company,New Holland,Pennsylvania AMERICAN SPROCKET CHAIN MANUFACTURERS ASSOCIATION R.A.Anderson,Roller Chain Division,Rex Chainbelt Company,Worcester,Massachusetts CONVEYOR EQUIPMENT MANUFACTURERS ASSOCIATION C.R.Davis,Rex Chainbelt Inc.,Milwaukee,Wisconsin A.W.Lemmon,Alternate,The Jeffrey Manufacturing Company,Columbus,Ohio R.C.Sollenberger,Alternate,Conveyor Equipment Manufacturers Association,Washington,D.C.MECHANICAL POWER .TRANSMISSION ASSOCIATION D.c.Currier,Dodge Manufacturing Company,Mishawaka,Indiana METAL CUTTING TOOL INSTITUTE Perry L.Houser,Metal Cutting Tool Institute,New York,N.Y.NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION C.F.Schwan,Reliance Electric&Engineering,Cleveland,Ohio SOCIETY OF AUTOMOTIVE ENGINEERS E.J.Flewelling,Massey-Fergusson,Inc.,Detroit,Michigan INDIVIDUAL COMPANIES J.W.Gillen,John Gillen Company,Cicero,Illinois G.W.Andrews,Alternate,John Gillen Company,Cicero,Illinois Roger Daniels,Formsprag Company,Warren,Michigan U.C.Sheers,Standard Horse Nail Corporation,New Brighton,Pennsylvania Personnel of Subcommittee 1,Rectangular Keys C.R.Davis,Chairman,Manager of Engineering,Conveyor Equipment,Rex Chainbelt Inc.,4701 West Greenfield Avenue,Milwaukee,Wisconsin 532 14 J.W.Gillen,President,John Gillen Co.,Subsidia:y of Stanray Corp.,2540 South 50th Avenue,Cicero,Illinois 60650 C.F.Schwan,Chief Mechanical Engineer,Reliance Electric&Engineering Co.,24701 Eurlid Avenue,Cleveland,Ohio 44117 D.F.Wild,Manager-Engineering,Gearmotor Business Section,General Electric Co.,845 East 25rh Street,Paterson,New Jersey 07513 Donald C.Currier,Chief of Standards and Statistics,Dodge Manufacturing Corporation,Mishawaka,Indiana 46544 iv Provided by IHS Markit under license with ASME TABLEOFCONTENTS 1.Introduction.2.Definitions 3.Key Size Versus Shaft Diameter.4.Key Dimensions and Tolerances.5.Dept h Cont rol Formulas.6.Key-Keyseat Assemblies.8.Chamfered Keys and Filleted Keyseats.9.Set Screws For Use Over Keys.7.Alignm ent Tolerances.Page.1.1 1.3.5.8.10.11.12.Tab!e 1 Key Sizeversus Shaft Diamet er.Tab!e 2 Key Dimensions a nd Tolerances.Ta ble2A Gib Hea d Nom ina l Dimensions.Table 3 Dept h Control Values-Values for S a nd T.Table 4 Class 1-Fit for Parallel Keys.Table 5 C!a ss 2-Fit for Parallel and Taper Keys.Table 7 Suggested Fillet Radii a nd Key Cha m fer.Table 8 Set Screws for Use Over Keys.Table 6 Keyseat Tolerances for Electric Motor a nd Generator Shaft Extensions.2 3 4 6 8.9.7.11.12.V Provided by IHS Markit under license with ASME Intentionally left blank Provided by IHS Markit under license with ASME USA STANDARD Keys and Keyseats 1.INTRODUCTION This standard establishes a unif orm relation-ship between shaft size and key size for parallel and taper keys retaining similar basic sizing as found in the withdrawn 817.1-1943 standard.This standard covers the size,t ype and toler-ances of parallel and taper keys and keyseats,and their relationship t o shaft diameters and bore dia