Mechanical Encoders SerieS 25

Mechanical Encoders
Series 25
Multi-Deck
Features
•Multiple Code and Indexing Choices
•Reliability Tested to Listed Specifications
•Less than 1.0" Square
•Termination Choices
•Panel and Shaft Seal Option
•Manufactured to ISO 9001 and Military Standards
•Custom Configurations Available
Dimensions
in inches (and millimeters)
Optical and Mechanical
Encoders
DIM.A–.025
(DIMA–0,64)
.250–.015
(6,35–0,38)
.320–.010
(8,13–0,25)
.865–.015
(21,97–0,38)
.365–.020
(9,27–0,51)
.219–.005
(5,56–0,13)
PARTNUMBER,
DATECODE,AND
PINOUTIDLABEL
∅.250+.001-.002
(6,35+0,03-0,05)
.865–.015
(21,97–0,38)
.250–.020
(6,35–0,51)
.060–.015
(1,53–0,38)
.375(9,53)3/8-32
UNEF-2ATHREAD
.190–.015
(4,83–0,38)
.050–.005
(1,27–0,13)
.020–.005
(0,51–0,13)
.288–.015
(7,31–0,38)
.100–.010
(2,54–0,25)
TYP.
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
CL
C
L
.200–.015
(5,08–0,38)
number of Decks
1
2
3
4
Dimension a
.450(11,43)
.650(16,51)
.850(21,59)
1.050(26,67)
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Mechanical Encoders
Specifications
Electrical Ratings
Switching Loads: 150 mA at 120 Vac, resistive;
150 mA at 28 Vdc, resistive
Current Carrying Capacity: 250 mA at 28
Vdc, resistive
Contact Resistance: 75 mΩ max. after life
Insulation Resistance: 1000 mΩ minimum
between terminals and shaft
Voltage Breakdown: 1000 Vac minimum
between terminals and shaft
Life Expectancy: 50,000 cycles at rated
loads
Contacts: Shorting
Mechanical Ratings
Stop Strength: 10 in-lbs minimum
Rotational Torque: 4-20 in-oz, dependent on
the number of decks
Operating Temperature Range: -65°C to
+85°C
Non-Turn Device: Flatted mounting bushing,
.375" dia. x .320"
Package Size: .865" square
Termination: PC terminals, .100" on center.
Decks are .200" apart.
Materials and Finishes
Bushing: Die cast zinc alloy, tin-zinc plated
Mounting Hardware: plated brass
Decks, Deck Separators, End Plate:
Thermoplastic
Contacts and Terminals: Gold, silver, nickelplated beryllium copper
Shaft, Stop Blades: Stainless Steel
Detent Balls: Steel, nickel-plated
Rivets: Brass, zinc-plated
Ordering Information
25BSP22–Q–1–16 C
Stop arrangement: For switches with maximum positions, add C for continuous rotation;
add F for stop between first and last. No notation required for less than maximum
positions.
Number of positions: Maximum is dependent on the angle of throw. Minimum is two.
Number of decks: One through four possible.
Code output:
B = Binary available in 22.5°
Q = Quadrature
G = Gray available in 22.5°
Specials include 1/8" diameter shaft, custom angles of throw for binary, binary complement
and gray code outputs. Contact Grayhill Sales for availability.
Control knobs available.
For prices and discounts, contact a local Sales Office, an authorized local Distributor or Grayhill.
Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois
60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Optical and Mechanical
Encoders
Series 25: Multi-deck
Shaft size: B = 1/4" diameter shaft
Sealed or non-sealed: S = Shaft and panel seal; No letter = no seal
Terminal structure: P = PC, perpendicular to shaft; R = PC, rear facing (one deck
only); F = PC, front facing (one deck only).
Angle of throw (determines the maximum number of positions):
10 = 10°, 36 positions; 11 = 11.25°, 32 positions; 12 = 12°, 30 positions;
15 = 15°, 24 positions; 18 = 18°, 20 positions; 22 = 22.5°, 16 positions;
30 = 30°, 12 positions; 45 = 45°, 8 positions; 60 = 60°, 6 positions;
90 = 90°, 4 positions.