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Grayhil l , Inc. • 561 Hil lgrove Avenue • LaGrange, I l l inois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhil l .com
Number of Poles Common terminal Per Deck Hole Location
1 A 2 AandB
Shownforatwodeckswitch.Bushingmountisrecommended.
30° Angle of throw 36° Angle of throw
SERIES 71: PC MOuNt ACCESSORy
Forprintedcircuitstyles.Mountingbushingprovidesadditionalsupport for the frontendof theswitch.Orderseparatelybyappropriatepartnumber.Rotaryswitchdiscountapplies.
1/8" and 1/4" Diameter Shaft Stylesininches(andmillimeters)
Metric Mount Stylesinmillimeters
All Styles Except 71Bt
.110(2,79)TyP.
.110TyP.(2,79)
SHAFTENDOFSWITCH
.075(1,91)TyP. .037(0,94)
A
.300(7,62)TyP.
B
COMMONTERMINALHOLELOCATION(SEECHART)
.110(2,79)TyP.
.110TyP.(2,79)
SHAFTENDOFSWITCH
.075(1,91)TyP. .037(0,94)
A
.300(7,62)TyP.
B
COMMONTERMINALHOLELOCATION(SEECHART)
OFCOMMONFORDECKONE
C L
0.030±.001(0,76±0,03)
.207±.005(5,26±0,13)
.500±.002(12,7±0,05)
C L
.255±.002(6,48±0,05)DIA.
0.368±.003(9,35±0,08)
.130±.003(3,30±0,08)
WASHERIS.032(0,81)THICK
DIMENSIONSAPPLyTOBOTHWASHERS.
FORUSEWITHSTyLEAF
PARt 71C2054
FORUSEWITHSTyLEBF
PARt 71C2053
.375±.002(9,53±0,05)
.687(17,45)
DIA.C L
Ø17.45±0.08
9.35±0.08
THICKNESS0.81±0.05
12.7±0.05
0.76±0.03
FORUSEWITHSTyLEEF
PARt 71C2111
Grayhil l , Inc. • 561 Hil lgrove Avenue • LaGrange, I l l inois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhil l .com
Rotary S
witches
Multi-Deck Rotary Switches
No. of Dimension Dimension Decks A B 1 0.795(20,19) 0.031(0,79) 2 1.040(26,42) 0.053(1,35) 3 1.285(32,64) 0.076(1,93) 4 1.530(38,86) 0.098(2,49) 5 1.775(45,09) 0.120(3,05)
DIMENSIONS: Standard and Military ininches(andmillimeters)
Grayhil l , Inc. • 561 Hil lgrove Avenue • LaGrange, I l l inois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhil l .com
Rotary S
witches
Multi-Deck Rotary Switches
SPECIFICAtIONS
Military Qualification MIL-DtL-3786/39ThemilitarystyleoftheSeries71rotaryswitchis qualified to MIL-DTL-3786/39. Completeelectrical rating information is listed on thefollowing page.The Series 71 rotary switchqualification includes the 30° and the 36°anglesofthrow,in.125"(3,18)and.250"(6,35)diametershafts,withsolderlugterminalsandprintedcircuitterminals,insealedandunsealedstyle switches. Standard variations such asshaftand/orbushing length,etc. thatdonotaffect the switch performance can also bemarkedasqualifiedproduct.ContactGrayhillforcompletedetails.
Dimensionally themilitary style is the sameas the standard style with the exception ofthePCversionof3or4decks;aspacerdeck
Anotherdifferenceinthestandardandmilitarystyles is the mounting hardware. Ordered asoptionswithastandardstyleswitchtheseitemsareincludedwiththemilitarystyleswitch:non-turnwasherwithsolderlugstyleandanon-turnwasherplusamountingbushingwasherwiththePCterminalstyle.
Completespecificationdrawingsareavailablefrom Grayhill, Inc. for the standard militaryqualifiedproducts.MilitaryqualifiedSeries71rotary switches may be ordered by the “M”numberlistedinMilitarySpecificationSheet/39orbyGrayhillpartnumber.Allqualifiedswitches
willbemarkedtothespecification.Military Shaft and Panel Seal AshaftandpanelsealisavailabletoprovidewatertightmountingoftheSeries71standardmilitary style rotary switches. Sealing isaccomplished by an O-ring shaft seal anda panel seal washer. Panel seal dimensiondifferences are shown in the dimensionaldrawings.Whenthepanelsealiscompressed,dimensions are approximately the same asan unsealed switch. If the non-turn washersuppliedwiththeswitchisused,itshouldnotbeallowedtoextendentirelythroughthepanelwhenmountingasealedswitch.However,thebushingmaybeusedasanon-turndeviceinstead.SwitchesareprovidedwithadoubleflatbushinginstyleswhichincludetheletterAandwithabushingwhichhasakeywayinthestyleswhichincludetheletterB.
Materials and Finishes Standard Style Cover:Diallylper(MIL-M-14)ASTM-D-5948exceptfor71BT(seebushing).Base and Deck Separator:Diallylper(MIL-M-14)ASTM-D-5948Rotor Mounting Plate:ThermoplasticBushing:Zinccasting,tin/zinc-plated.through Bolts and Nuts, Shaft and Rear Support Plate, Stop Pins and Stop Arm (All Others):StainlesssteelShaft, Stop Plates, Stop Arm (71Bt):ReinforcedthermoplasticDetent Rotor: Reinforcedthermoplasticfor71BT;phenolicper(MIL-M-14)ASTM-D-5948forallothersDetent Balls:Steel,nickel-platedDetent Springs:TinnedmusicwireRotor Contact:SilveralloyandberylliumcopperBase Contacts, Common Plate and terminals:Brass,Goldplate.000005"minimumoverSilverplate.00005"overnickel.00002".Front Support Plate (71 Bt only):Temperedsteel,tin/lead-plated.Interdeck Seal (71 Bt Only):SiliconeExtension:Brass,unplated
Mounting Hardware: One mounting nut andoneinternaltoothlockwasheraresuppliedwitheach switch. For switches with A in the styledescription,thenutis.062"(1,57)thickby.312"(7,92)acrossflats.ForswitcheswithBorCinthestyledescription,thenutis.094"(2,39)thickby.562"(14,27)acrossflats.Nutsarebrass,tin/zinc-platedorstainlesssteel.
Materials and Finishes Military Qualified Cover, Base and Deck Separator:Diallylper(MIL-M-14)ASTM-D-5948Rotor Mounting Plate:ThermoplasticBushing:Zinccasting,tin/zinc-platedthrough Bolts and Nuts, Shaft Extension, Lockwashers, Shaft and Rear Support Plate, Stop Pins and Stop Arm (All Others):StainlesssteelDetent Balls:Steel,nickel-platedDetent Springs:TinnedmusicwireRotor Contact:SilveralloyandberylliumcopperBase Contacts, Common Plate and terminals:Brass,goldplate.000005"minimumoversilverplate.00005"overNickel.00002".
Detent Rotor: Phenolic per (MIL-M-14)ASTM-D-5948Mounting Hardware:Onemountingnutandone internal tooth lockwasher are suppliedwitheachSeries71switch.ForswitcheswithStyle A in the description, the nut is .062"(1,57) thickby .312" (7,92)acrossflats.ForswitcheswithStyleBorCinthedescription,thenutis.094"(2,39)thickby.562"(14,27)acrossflats.Nutsarebrass,tin/zinc-platedorstainlesssteel.Additional Hardware:Eachswitchissuppliedwith a non-turn washer to use if desired.Additionally,eachPCmountswitchissuppliedwithamountingbushingwasher(seePCMountAccessory).ForswitcheswithStyleAinthedescription,non-turnwasherisstainlesssteel;for switcheswithStyleB in thedescription,non-turnwasherisstainlesssteel.Mountingbushing washer (PC Mount Accessory) isbrass,tin/zinc-plated.
Grayhil l , Inc. • 561 Hil lgrove Avenue • LaGrange, I l l inois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhil l .com
Rotary S
witches
Multi-Deck Rotary Switches
SPECIFICAtIONS: Electrical Ratings, Others
Standard
Military
Electrical Ratings General Charts: Charts shown are for non-shorting(breakbeforemake)contacts.Measurementsweremadeat25°Cand68%relativehumidity.The load life curves show the number ofrotationalcycleswhichcanbeexpectedforthevoltage,currentandtypeofload.Thus,forastandardstyleswitchwitha300milliampere115Vacresistiveload,theexpectedlifeis15,000cycles.Reducingtheloadto200milliamperesincreasesthelifeto25,000cycles.Lifelimitingorfailurecriteriaarelistedintheratingsectionswhichfollow.Cycles:Acycleisa360°rotationandareturnthrough all switch positions to the startingposition.Voltage:Aslistedincharts.
CyCLESx1000
CU
RR
EN
TM
ILLI
AM
PS
CyCLESx1000
CyCLESx1000
CyCLESx1000
CU
RR
EN
TM
ILLI
AM
PS
CU
RR
EN
TM
ILLI
AM
PS
CU
RR
EN
TM
ILLI
AM
PS
VOLTAGE115VACOR30VDCRESISTIVE
25020015010050
10 25 50
10 25 50
400300200100
500600
VOLTAGE30VDCINDUCTIVE
(250MILLIHENRIES)
VOLTAGE115VACOR30VDCRESISTIVE
VOLTAGE30VDCINDUCTIVE
(250MILLIHENRIES)
10 25 50
400300200100
500600
10 25 50
20015010050
250
800700
MILItARy
StANDARD
CyCLESx1000
CU
RR
EN
TM
ILLI
AM
PS
CyCLESx1000
CyCLESx1000
CyCLESx1000
CU
RR
EN
TM
ILLI
AM
PS
CU
RR
EN
TM
ILLI
AM
PS
CU
RR
EN
TM
ILLI
AM
PS
VOLTAGE115VACOR30VDCRESISTIVE
25020015010050
10 25 50
10 25 50
400300200100
500600
VOLTAGE30VDCINDUCTIVE
(250MILLIHENRIES)
VOLTAGE115VACOR30VDCRESISTIVE
VOLTAGE30VDCINDUCTIVE
(250MILLIHENRIES)
10 25 50
400300200100
500600
10 25 50
20015010050
250
800700
MILItARy
StANDARD
CyCLESx1000
CU
RR
EN
TM
ILLI
AM
PS
CyCLESx1000
CyCLESx1000
CyCLESx1000
CU
RR
EN
TM
ILLI
AM
PS
CU
RR
EN
TM
ILLI
AM
PS
CU
RR
EN
TM
ILLI
AM
PS
VOLTAGE115VACOR30VDCRESISTIVE
25020015010050
10 25 50
10 25 50
400300200100
500600
VOLTAGE30VDCINDUCTIVE
(250MILLIHENRIES)
VOLTAGE115VACOR30VDCRESISTIVE
VOLTAGE30VDCINDUCTIVE
(250MILLIHENRIES)
10 25 50
400300200100
500600
10 25 50
20015010050
250
800700
MILItARy
StANDARD
CyCLESx1000
CU
RR
EN
TM
ILLI
AM
PS
CyCLESx1000
CyCLESx1000
CyCLESx1000
CU
RR
EN
TM
ILLI
AM
PS
CU
RR
EN
TM
ILLI
AM
PS
CU
RR
EN
TM
ILLI
AM
PS
VOLTAGE115VACOR30VDCRESISTIVE
25020015010050
10 25 50
10 25 50
400300200100
500600
VOLTAGE30VDCINDUCTIVE
(250MILLIHENRIES)
VOLTAGE115VACOR30VDCRESISTIVE
VOLTAGE30VDCINDUCTIVE
(250MILLIHENRIES)
10 25 50
400300200100
500600
10 25 50
20015010050
250
800700
MILItARy
StANDARD
Electrical RatingsStandard Style Curves are based on the following failurecriteria:Contact Resistance:50milliohmsmaximum(20milliohmsinitially).Insulation Resistance: 1,000 megohmsminimumbetweenterminalsandshaft.(50,000megohmsinitially).Voltage Breakdown: 500Vacminimumbetweenmutuallyinsulatedparts.Current Rating:These switches will carry 4ampereswithamaximumcontacttemperatureriseof20°C. If the life limitingcharacteristicsare less critical than those shown above, ifelevated temperatures or reduced pressuresareinvolved,Grayhillcanpredicttheswitchlifefortheapplication.Meet the Following Requirements of MIL-DtL-3786:MoistureResistance:MediumandHighShock;Vibration(10to2,000cps);ThermalShock(-65°Cto85°C);SaltSpray,Explosion;andStopStrength(10in-lb).
Electrical Ratings Military Style Curves are based on the following failurecriteria:Qualified to the following MIL-DtL-3786/39 circuit values: (also see standard styledescription.)TheSeries71hasbeentestedtomeettherequirementsofMIL-DTL-3786,StyleSR39,themajorityofwhicharelistedhere.At85°Capproximately68%relativehumidityandsea level pressure, the switches have beentestedtomakeandbreakthefollowingloads,asstatedinMIL-DTL-3786/39:125milliamperesat28Vdcresistive;75milliamperesat115Vacresistive.
TheSeries71alsomeets therequirementsofMIL-DTL-3786/39formoistureresistance,stopstrength,rotationaltorque,vibration(10through2,000cps),mediumandhighshock,salt spray, explosion, thermal shock (-65°Cto 85°C) and terminal pull.When tested atsea level, 25°C and 68% relative humiditywithfailurecriteriaof50milliohmsmaximumcontact resistance and 500Vac breakdownvoltage,theseswitcheswillmakeandbreak250milliampsat28Vdcinductive(250millihenries)500milliampsat28Vdcresistive:500milliampsat115voltsVac,60hertzresistive,for10,000cyclesofoperation.
Additional Characteristics Standard and Military Styles Rotational torque:4-32ounce-inches,(28-230N•mm)dependingonthenumberofpolesperdeckandthenumberofdecks.Contacts: Shorting or non-shorting wipingcontacts with over 100 grams of contactforce.Shaft Flat Orientation:Oppositefirstpositionpoleno.1(SeeCircuitDiagrams).terminals: Switches are provided with fullcircleof terminalsregardlessof thenumberofactivepositions.Extended Studs: Switches of 6 or moredecks(orconcentricswitchesof4ormore)have longer studs and extra stud nuts forrecommendeddoubleendmounting.Studholesizeis1/16"diameterfor#0-80NF-2Athread.Stop Strength: 10pound-inches.Mounting Bushing Strength: 10 pound-inches.
Grayhil l , Inc. • 561 Hil lgrove Avenue • LaGrange, I l l inois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhil l .com
Rotary S
witches
Multi-Deck Rotary Switches
ADJuStABLE StOPS
Set and Reset Stops to Limit RotationForm, Fit, Function Equivalent to Fixed Stop Styles
Part number50J1066 ismadeofStainlessSteel. It issuppliedwithmilitaryswitcheswithStyleAinthedescription.Whenorderedforstandardproduct,alikenumberofswitchesmustbeordered.
1ForAdjustableStopstyles(withtheletterD),use AJ instead of number of positions whenordering.2MilitaryQualifiedPCmountswitchesof3or4 operative decks have an additional spacerdeckafterdeck2.Usetotaldeckstocalculate
length; but use only the number of operativedeckswhencreatingthepartnumber.3For1-poleswitcheswithmaximumpositions,specify Fixed stop after last position or Continuousrotationwhenordering.(Note:1p,71BT, 10 positions, is available only asContinuous).
4 In addition to qualified types (Solder lug–5decks;PCmount–4decks),Grayhill canpro-vide switches with additional decks in thematerialsofthe‘M’style.ContactGrayhill.5Switchesin30°throwwith5or6polesperdeckarenotavailablewithadjustablestops.
Grayhil l , Inc. • 561 Hil lgrove Avenue • LaGrange, I l l inois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhil l .com
Positions Per Pole:02to12perChoiceschart. Foradjustablestopswitches(D)useAJhere.
Poles Per Deck:AslimitedbytheChoiceschart
* All rotary switches that are required to have military designated markings and testing adhering to MIL-DTL-3786 are to be ordered by specifying the military part number identified on the appropriate slash sheet.
ORDERING INFORMAtION: Concentric Shaft Switches
Entire Switch Series and Style:71Cor71CF
Angle of throw:30°or36°.Bothswitchsectionswillbethesame.
Switch Section A (Front Switch) Number of Decks:1to3,perChoicesandLimitationschart
Poles Per Deck:AslimitedbytheChoicesandLimitationschart
Positions Per Pole: 02to12perChoicesandLimitationschart