Mechanical Encoders Series 25L Hex, Gray and Quadrature Code Features •Price Competitive to Similar Designs •Quality Construction and Contact Materials •Multiple Code and Indexing Choices •100,000 Life Cycles •Less than 1.0" Square •Manufactured to ISO 9001 Standards Dimensions in inches (and millimeters) .925 ± .010 (23,50 ± 0,25) .343 ± .025 (8,71 ± 0,64) .865 ± .015 (21,97 ± 0,38) .250 ± .015 (6,35 ± 0,38) .045 ± .005 (1,14 ± 0,13) .865 ± .015 (21,97 ± 0,38) Optical and Mechanical Encoders 1.020 ± .010 (25,91 ± 0,25) 3/8-32 UNEF-2A THREAD .025 ± .002 (0,64 ± 0,05) SQUARE PIN (3 PLACES) Ø .470 ± .010 (11,94 ± 0,25) NON-TURN C L TAB .250 + .001 –.002 (6,35 + 0,03 –0,05) DIA. .320 ± .010 (8,13 ± 0,25) .400 ± .015 (10,16 ± 0,38) CL BUSHING FLATS CL .500 ± .010 (12,7 ± 0,25) .250 ± .015 (6,35 ± 0,38) .500 ± .015 (12,7 ± 0,38) NON-TURN TAB Ø .120 ± .005 (3,05 ± 0,13) WIDE BY .068 ± .005 (1,73 ± 0,13) THICK CL .590 ± .010 (14,97 ± 0,25) .250 ± .010 (6,35 ± 0,25) MOUNTING BRACKET .219 ± .004 (5,56 ± 0,10) 90˚ .100 ± .005 (2,54 ± 0,13) TYP. CL SHAFT FLAT LOCK TAB (2) FOR MOUNTING BRACKET 25J5155 Truth Tables Switch position 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Clockwise rotation Clockwise rotation 4-BitGrayCode-16Position 4-BitBinaryCodeHexadecimal-16Position Code position 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 output 4 8 Indicatesclosedcircuit;blankindicates opencircuit. Switch position 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Code position 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 OUTPUT B HIGH LOW HIGH LOW 1 2 3 4 5 2 4 Quadrature2-BitCode 1/4CycleperDetent 8 Indicatesclosedcircuit;blankindicates opencircuit. Quadrature 2-bit Code Output Table for CW Rotation OUTPUT A 1 output Clockwise rotation 6 POSITION NUMBER Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois Switch position 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 "a" output "b" Indicatesclosedcircuit; blankindicatesopen circuit.Coderepeats every4positions. 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com Mechanical Encoders Specifications Electrical Ratings Switching Loads: 1.5 mA at 115 Vac, resistive; 150 mA at 14 Vdc, resistive Current Carrying Capacity: 250 mA maximum at 28 Vdc, resistive load Contact Resistance: 75 mΩ, typical Insulation Resistance: 1000 mΩ minimum between terminals Voltage Breakdown: 1000 Vac minimum between terminals Life Expectancy: 100,000 cycles of operation at rated loads. One cycle of operation is a rotation through all of the active positions and a return to the starting position. Mechanical Ratings Optical and Mechanical Encoders Rotational Torque: 2 to 6 in-oz Operating Temperature Range: -40 C° to +85 C° Storage Temperature Range: -65 C° to +85 C° Continuous Rotation: All standard switches are continuous rotation. Desired stop locations supplied upon request. Anti-Rotation Device: Integral non-turn tab, flatted bushing, .375" diameter, .320 double “D” across flats. Termination: Standard is PC style, parallel to shaft, facing rear. Options include PC, parallel to shaft, facing front. Panel Mounting Torque: 10 in-lbs maximum Materials and Finishes Bushing/Housing and Shaft/Rotor: Reinforced thermoplastic Detent Ball: Stainless steel, nickel-plated Detent Spring: Tinned music wire Contacts: Beryllium copper, gold plate over nickel Terminals: Copper alloy, #725, 100% tin plate over nickel plate Output Board: FR-4, copper/nickel-plated Mounting Nut: Brass, tin/zinc-plated hex nut Mounting Bracket: Stainless Steel, tin-plated ordering information 25LB10-Q-Z Series: 25L = Economical, single deck encoder Housing Color: B = Black housing; R = Red housing Angle of Throw: 10 = 10°, 36 positions; 11 = 11.25°, 32 positions; 15 = 15°, 24 positions; 18 = 18°, 20 positions; 22 = 22.5°, 16 positions; 30 = 30°, 12 positions; 45 = 45°, 8 positions Mounting Bracket: Z = with bracket, Blank = no bracket Code Output: H = Hexadecimal available only in 22.5° G = Gray available only in 22.5° Q = Quadrature (2-bit) Custom materials, styles, color and markings are available. Custom knobs available. Available from your local Grayhill Distributor. For prices and discounts, contact a local Sales Office, an authorized Distributor or Grayhill. For Custom codes. Termination, Torque, Angles of Throw, call Grayhill for more information. Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com