Optical and Mechanical Encoders Mechanical Encoders AVAILABLE CODES SERIES 26 • Hexadecimal Binary and Gray Code • Octal • BCD (Adjusted) • Quadrative • Custom (4-Bit, 16 position maximum) • RoHS Compliant DIMENSIONS in inches (and millimeters) C OF BUSHING FLATS 1/4-28 UNF-2A THREAD COMMON TERMINAL L C POS. 0 L .300 .125 ± .003 DIA. (7,62) (Ø 3,18 ± 0,10) .150 (3,81) C 2 PLACES L ANGLE A .025 ± .005 .094 (2,39) 12 C (0,64 ± 0,13) L C 84 .250 (6,35) 3 PLACES .203 ± .003 .180 (4,57) (5,16 ± 0,10) .375 (9,53) .100 (2,54) ACROSS FLATS 2 PLACES .332 (8,43) .500 ± .015 (12,7 ± 0,38) DIA. .250 (6,35) .200 (5,08) Maximum Switch Angle .957 Positions A Grayhill part number and date (24,31) code marked on label. Customer 8 67.5° REF. part number marked on request. 16 33.75° Unless specified otherwise, all tolerances are ± .015 ( 0,38) o SPECIFICATIONS Relative Humidity: 90-95% at 40 C for CODE AND TRUTH TABLE Electrical Ratings 240 hours (MIL-STD-202 Method 103, Test BCD Output* Gray Output* Rated: 25,000 cycles with logic compatible Condition A) loads. Make and break 200 mA. Thermal Cycling: per MIL-STD-202, Method 1 2 4 8 1 2 4 8 Contact Resistance: 500 milliohms maximum 107, Test Condition A, with an exception of (less than 100 milliohms initially) -65°C as the low temperature 1 0 Insulation Resistance: 1000 megohms Shaft and Panel Seal 2 1 minimum (10,000 megohms initially) All switches are provided with a shaft and 3 2 Dielectric Strength: 250 Vac minimum panel seal. 4 3 Materials and Finishes 5 4 OPTIONS Panel Seal: Silicone Rubber 6 5 Adjustable Stop Switches Shaft Seal: Fluorosilicone The switch may have continuous rotation, or 7 6 Mounting Nut (mounting hardware–one be adjusted to limit the rotation. The panel per switch): Brass, tin/zinc-plated 8 7 seal ring can be removed to expose the stop Internal Tooth Lockwasher (mounting 9 8 pin holes on the front of the switch. Two stop hardware): Steel,tin/zinc-plated 10 9 pins and panel seal o-ring are supplied with Detent Balls: Carbon steel, nickel-plated the switch. One or both may be used to limit 11 10 Detent Spring: Pretinned music wire the rotation as desired. Detent Rotor: Thermoplastic 12 11 Shaft, Stop Arm and Stop Pins: Stainless steel 13 12 Custom encoders with options such as custom Bushing: Zamak II tin/zinc alloy, zinc-plated 14 13 code output, 1/4” shaft diameter, factory set Switch Base: Diallyl phthalate stops and longer shaft terminal lengths are 15 14 Printed Circuit Board: NEMA Grade FR-4. Terminals: Brass, gold-plated over nickel plate 16 15 Contacts: Copper alloy, gold-plated over *Dot indicates terminal tied to common. nickel plate Additional Characteristics 26GSD22-01-1-16S-C Rotational Torque: 4 to 8 oz-in initial Series Code Vibration Resistance: 10 to 55 Hz at Output Code: C = Continuous, 0.060" double amplitude; no damage and G = Gray, A = BCD F = Fixed, no contact openings per MIL-STD-202, Blank = Adjustable Sealed Method 201A Positions: Stops: 08S, 16S, or AJS for adjustable Shock Resistance: Passes medium D = Adujustable, Poles: 1 requirement MIL-DTL-3786 (MIL-STD-202, Blank = Continuous or Fixed Method 213) Decks: 1 Stop Strength: 5 in-lbs minimum Angle of Throw: 22 = 22.5º, 45 = 45º Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com Switch Position Code Position