Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois

60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com

Mechanical Encoders

SerieS 20

Concentric Shafts

FeatureS

•Compactmechanicalencoderwithconcentricshafts

•OutputCodeChoices

•PanelandShaftSealOption

•ManufacturedtoISO9001andMilitaryStandards

•Availablewithafixedstoporcontinuousrotation

•CustomConfigurationsAvailable

SpeCiFiCationS

electrical ratings

Switching Loads:

150mA,115Vac

200mA,28Vdc

Life expectancy:

25,000cyclesatratedloads

Contact resistance:300mohmsmax.

(lessthan100mohmsinitially)

insulation resistance:1000Mohmsmin.

(10,000Mohmsinitially)

Dielectric Strength:500Vacmin.

Hardware Dimensions:

Lockwasher:.437inchdiameter,.022inchthick

HexNut:5/16-32UNEF-2BThread,

.437inchacrossflats,.094inchthick

materials and Finishes

terminal pins:Phosphorbronzewithtinover

nickelplating

panel Seal: Buna-Nrubber,adhesivecoated

Lockwasher:Springsteelwithzincplating

Hex nut:Brasswithtin/zincplating

mechanical ratings

Stop Strength:5in-lbs.

rotational torque:

5in-ozoutershaft

3.5in-ozinnershaft

mounting torque:12in-lbs.recommended

operating temperature range:

-40°Cto+85°C

Storage temperature range:

-55°Cto+100°C

immersion: 15psi(33ft)for30minutes

pin Dimensions:.018inchsquare

Series 20:MechanicalEncoder,concentricshafts

Seal: S=Sealed;A=NotSealed

output code

angle of throw (outershaft)

Stop arrangement: AC=allpositionscontinuousrotation;

AF=allpositionswithfixedstopbetweenfirstandlast;

02to15:numberofpositions,iflessthanmaximum

termination: P=Pins;02to25=CableLength

Stop arrangement(seeabove)

angle of throw (innershaft)

output code

angle of throw / max positions:

2=22.5°/16positions

0=30°/12positions

6=36°/10positions

5=45°/8positions

output Code:

G=Gray

B=Binary

Q=Quadrature

20Sg2aC–g2aC-p