71BY23404

Mechanical Encoders SERIES 71 Binary Code FEATURES • 1/4" or 1/8" Shaft Diameters • 25,000 Cycles at 125 mA • Optional Seal Versions • Adjustable Stop Versions In inches (and millimeters) .375 ± .020 (9,53 ± 0,51) .250 ± .020 (6,35 ± 0,51) .203 ± .005 (5,16 ± 0,13) .125 + .001/ –.002 (3,18 + 0,03/ –0,05) 1/4 32-UNEF-2A THREAD CL OF SHAFT FLAT (5,56 ± 0,10) .750 ± .020 (19,05 ± 0,51) OVER TERMINALS 2 3/8 32-UNEF-2A THREAD 72° Detail A CL OF BUSHING KEYWAY SHAFT IS SHOWN IN POSITION 1 Rear mounting plate stamping indicates CODED output terminals, not decimal positions. Optical and Mechanical Encoders .687 ± .015 (17,45 ± 0,38) DIA. SEE DETAIL A 1 SHAFT IS SHOWN IN POSITION 1 .562 ± .015 (14,27 ± 0,38) 8 CL OF BUSHING FLATS C 72˚ .500 ± .015 (12,7 ± 0,38) DIA. .031 (0,79) REF. 4 CL OF SHAFT FLAT (2,39 ± 0,25) 0.250" Diameter Shaft .219 ± .004 .761 ± .046 (19,33 ± 1,17) .312 ± .020 (7,92 ± 0,51) 0.125" Diameter Shaft .094 ± .010 GRAYHILL 81073 DIMENSIONS .250 + .001/ –.002 (6,35 + 0,03/ –0,05) All dimensions and rear view not shown for the .250" diameter shaft type are the same as the .125" diameter shaft type. .034 ± .003 (0,86 ± 0,08) .068 ± .005 (1,73 ± 0,13) BUSHING KEYWAY .066 ± .002 (1,68 ± 0,05) WIDE BY .036 ± .003 (0,91 ± 0,08) FROM A .375 (9,53) DIAMETER Grayhill part number and date code marked on label. Customer part number marked on request. CODE AND TRUTH TABLE Output Terminal 0 1 Decimal Position 2 3 4 5 6 7 8 9 1 * * * * * 2 * * * * 4 * * * * 8 * * l Indicates contact is made to the common. OPTIONS Adjustable Stop Switches Shaft and Panel Seal Adjustable stop switch lets you limit the number of positions. Remove and relocate pins in the front plate. A sticker holds the pins in place. With the exception of holes in the front plate, all dimensions, ratings, and characteristics are the same as the other Series 71 coded switches. For diagrams, see Standard Switch. Shaft is sealed by o-ring inside the bushing; panel is sealed by o-ring at the base of the bushing. Seals do not alter dimensions as shown in the drawing when switch is mounted. Panel seal is silicone rubber. Shaft seal is an o-ring per MIL-P-5516B. Shaft and panel seal is not available on adjustable stop switch. SPECIFICATIONS Electrical Rating Additional Characteristics Rated: To make and break 125 mA at 30 Vdc resistive at standard conditions Life Expectancy: 25,000 cycles at rated load; 50,000 cycles mechanical. For ratings at different loads and conditions, contact Grayhill. Contact Resistance: 100 milliohms maximum (50 milliohms initially) Insulation Resistance: As measured between mutually insulated parts Initially: 50,000 megohms minimum After Life: 10,000 megohms minimum Voltage Breakdown: 500 Vac between mutually insulated parts Carry Current: These switches will carry 3 amperes with a maximum contact temperature rise of 20°C. Rotational Torque: 8 to 16 oz-in. Contacts: Non-shorting wiping contacts Shaft Flat Orientation: As shown in the drawing, switch would provide a decimal 1 output. Materials and Finishes Base: Diallyl per MIL-M-14 Rotor Mounting Plate: Thermoplastic. Rotor Contact: Phosphor Bronze, gold-plated 30 microinches minimum Terminals: Brass, gold plate (20 microinches) minimum over silver plate (300 microinches) minimum Additional Materials: Other switch materials and finishes are the same as listed for the standard switch. See Standard Switch. Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois ORDERING INFORMATION Shaft Diameter And Description Part Number 1/8" 1/8" 1/4" 1/4" 1/8" 1/4" 71AY23401 71AY23402 71BY23403 71BY23404 71AD36-3118 71BD36-3119 Continuous Rotation Cont. Rot., Sealed Continuous Rotation Cont. Rot., Sealed Adjustable Stops Adjustable Stops Available from your local Grayhill Distributor. For prices and discounts, contact a local Sales Office, an authorized local Distributor or Grayhill. 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com Encoder 9