Grayhill Single Deck Rotary Switches 51 User Manual

Single Deck Rotary Switches

.203 ± .003
(5,16 ± 0,08)
ACROSS
FLATS

DIMENSION

D

A

POS. 1

OPTIONAL
PANEL SEAL
GASKET

.093 ± .005
(2,36 ± 0,13)

.171 ± .015
(4,34 ± 0,38)

.125 (3,18)
REF.

TERMINALS ARE
.016 ± .003 (0,41 ± 0,08) SQ.

TERMINAL SEALANT
IN STYLE T

COMMON Ø .025 ± .002
(0,64 ± 0,06) AND EXTEND
TO SAME PLANE AS
POSITION TERMINALS

.125 ± .015
(3,18 ± 0,38)

.020 ± .003

(0,51 ± 0,08)

.020 ± .004
(0,51 ± 0,10)

.062 ± .003

(1,57 ± 0,08)

.171 ± .015
(4,34 ± 0,38)

Ø .025 ± .002

(0,64 ± 0,05)

GRAYHILL

91012

+.001- .002

Ø.125

.375±.015
(9,53±0,38)

.250±.015
(6,35±0,38)

DIMENSION "B"

.125±.015
(3,18±0,38)

1/4-28 UNF-2A
THREAD

.250±.015
(6,35±0,38)

TERMINAL
SEALANT
IN STYLE "T"

(3,18 + 0,03 -0,05)

.064 ± .005
(1,63 ± 0,13)

.020 ± .004
(0,51 ± 0,10)

.062 ± .004
(1,57 ± 0,10)

.032 ± .004
(0,81 ± 0,10)

.064 ± .005
(1,63 ± 0,13)

.016 ± .004
(0,41 ± 0,10)

.046 ± .004
(1,17 ± 0,10)

.021 ± .004
(0,53 ± 0,10)

GRAYHILL

91012

Ø.125 + .001 - .002
(3,18 + 0,03 - 0,05)

.375±.015
(9,53±0,38)

.250±.015
(6,35±0,38)

1/4-28 UNF-2A
THREAD

.250±.015
(6,35±0,38)

TERMINAL
SEALANT
IN STYLE "T"

.658±.015
(16,71±0,38)

.153±.015
(3,89±0,38)

.234±.015
(5,94±0,38)

SERIES 50 SERIES 51

0.5" Diameter, 200mA,
.698" Behind Panel

FEATURES

•OptionalCompleteSealfor

PC Board Assembly and Cleaning

•Small1/2"Diameter

•Choiceof22.5°,30°,36°,45°,60°

and 90° Angles of Throw

•Upto4Poleson1Deck

•Upto16PositionsPerSwitch

•PCorSolderLugTermination

•PositiveShaftGroundingfor

EMI/RFI Shielding

DIMENSIONS in inches (and millimeters)

PC Mount Style

Side View

All others as shown at left

Rotary Switches

Angle of Angle Angle of Angle
Throw A Throw A

22.5° 101.25° 45° 112.5°
30° 105° 60° 120°
36° 108° 90° 135°

Solder Lug Style

PC TERMINAL DETAIL

Grayhill part number and date code
marked on label. Customer part
number marked on request. Military
part number marked when required.

Dimension Series 50 Series 51

.500 ± .015 .562 ± .015

D

(12,70 ± 0,38) (14,27 ± 0,38)

Front view same as
PC Mount style.

Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: [phone] • Fax: [phone] • www.grayhill.com

All angles of throw, except 22.5°

Dimension Style T All Others All 22.5°

.576 ± .015 .537 ± .015 .537 ± .015

B

(14,63 ± 0,38) (13,64 ± 0,38) (13,64 ± 0,38)

SOLDER LUG TERMINAL DETAIL

All angles of throw, except 22.5°

SOLDER LUG TERMINAL DETAIL 22.5°

PC COMMON DETAIL

All angles of throw, except 22.5°

Single Deck Rotary Switches

PC MOUNT

.500 ± .015
(12,7 ± 0,13)
DIA. CIRCLE
OF CENTERS

.156 ± .015
(3,96 ± 0,13)

LOCATION
OF COMMONS
2 POLES

COMMON TERMINAL
(1 POLE)

11.25˚

22.5˚

POS. 1

DIM. A ±
.005 (0,13)

POLE 1

POS. 1

THREE POLES
Dimension A, diameter circle of common centers,
is .175 (4,45) for Solder Lug and .232 (5,89) for PC.

7

8

9

10

14

15

16

13

11

12

1

2

3

4

5

6

C2

C1

7

8

9

10

11

12

1

2

3

4

5

6

7

8

9

10

11

12

1

2

34

5

6

C2

C1

7

8

9

10

11

12

1

2

34

5

6

C3

C2

C1

7

8

9

10

11

12

1

2

34

5

6

C3

C4

C2

C1

6

7

8

9

10

1

2

3

4

5

C2

C1

6

7

8

9

10

1

2

3

4

5

5

6

7

8

1

2

3

4

5

6

7

8

1

2

3

4

C2

C1

1

2

3

4

5

6

1

2

3

4

5

6

C2

C1

3

4

1

2

3

4

1

2

C2

C1

7

8

9

10

14

15

16

13

11

12

1

2

3

4

5

6

COMMON TERMINAL
(1 POLE)

SOLDER LUG

.382 ± .015 (9,70 ± 0,13)
DIAMETER CIRCLE OF
TERMINAL CENTERS

.156 ± .015
(3,96 ± 0,13)

LOCATION
OF COMMONS
2 POLES

11.25˚

22.5˚

POS. 1

COMMON TERMINAL (1 POLE)

.382 ± .005 (9,70 ± 0,13)
DIAMETER CIRCLE OF
TERMINAL CENTERS

.156 ± .005 (3,96 ± 0,13)

LOCATION OF COMMONS
2 POLES

30˚

15˚

POS. 1

18˚

36˚

.320 ± .015 (8,13 ± 0,38) DIAMETER
CIRCLE OF TERMINAL CENTERS

LOCATION OF COMMONS
2 POLES

COMMON TERMINAL (1 POLE)

POS. 1

.125 ± .015
(3,18 ± 0,38)

45˚

22.5˚

.320 ± .015 (8,13 ± 0,38) DIAMETER
CIRCLE OF TERMINAL CENTERS

LOCATION OF COMMONS
2 POLES

COMMON TERMINAL (1 POLE)

POS. 1

.125 ± .015
(3,18 ± 0,38)

60˚

30˚

LOCATION OF COMMONS
2 POLES

POS. 1

.125 ± .015
(3,18 ± 0,38)

COMMON TERMINAL (1 POLE)

.320 ± .015 (8,13 ± 0,38) DIAMETER
CIRCLE OF TERMINAL CENTERS

45˚

90˚

LOCATION OF COMMONS
2 POLES

POS. 1

.125 ± .015
(3,18 ± 0,38)

COMMON TERMINAL (1 POLE)

.320 ± .015 (8,13 ± 0,38)
DIAMETER CIRCLE OF
TERMINAL CENTERS

.175 ± .005
(4,45 ± 0,13)
DIAMETER
CIRCLE OF
COMMON
CENTERS

FOUR POLES

POS. 1

POLE 1

CIRCUIT DIAGRAMS AND REAR VIEWS: Solder Lug and PC Mount

Rear View

Circuit as Viewed From Shaft End

TWO POLESONE POLE

ONE POLE

THREE POLES

TWO POLES

FOUR POLES

22.5° Angle
of Throw

30° Angle
of Throw

Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: [phone] • Fax: [phone] • www.grayhill.com

ONE POLE

ONE POLE

ONE POLE

Rotary Switches

36° Angle
of Throw

TWO POLESONE POLE

45° Angle
of Throw

TWO POLES

60° Angle
of Throw

TWO POLES

90° Angle
of Throw

TWO POLES

SPECIFICATIONS

POS. 1

CIRCLE SHOWING

DIMENSIONS OF

HOLE TO BE CUT

IN PANEL.

POS. 1

POS. 1

Ø0.254

Ø0.280

Ø0.380

0.208

0.240

0.350

1/8"Shaft

"E" Style

"K" Style

3/8-32 UNEF-2A

THREAD

.250
±.015

.375
±.015

+.001

-.002

.250

.250
±.015

.340
±.005

.219
±.004

Single Deck Rotary Switches

Military Qualification

The dimensions for qualified switches are
the same as those indicated in the drawings
of standard switches. Switches with standard
variations, such as shaft and bushing length,
which do not affect switch performance, can be
marked as qualified product. Contact Grayhill
for complete information on variations.

36°, 45°, 60°, 90° (Series 50): The C and M
style switches are qualified to MIL-S-3786/20.
They include the following:
Solder lug or PC terminals
With or without panel seal
Series 50 qualified switches may be ordered
by the ‘M’ number or by the Grayhill part
number.
30° (Series 51): The C and M style switches
are qualified to MIL-S-3786/35. They include
the following:
Solder lug or PC terminals
With or without panel seal
Series 51 qualified switches may be ordered
by the ‘M’ number or by the Grayhill part
number.

SPECIFICATIONS: Other

Electrical Ratings

Life Expectancy: With the limiting criteria stated

here, the Series 50 and 51 with non-shorting
contacts will switch the following loads at
atmospheric and reduced pressures for 25,000
cycles of operations. One cycle is 360° rotation
clockwise and 360° return.

At 85°C, atmospheric pressure
200 mA, 28 Vdc resistive
150 mA, 115 Vac resistive
30 mA, 28 Vdc inductive
100 mA, 28 Vdc lamp load
75 mA, 220 Vac lamp load

At 25°C, reduced pressure (70,000 feet)
200 mA, 28 Vdc resistive
150 mA, 115 Vac resistive
75 mA, 220 Vac resistive
Contact Resistance: 20 milliohms maximum,
(10 milliohms initially).

Insulation Resistance: 1,000 Mohms
minimum between mutually insulated parts.
Voltage Breakdown: 600 Vac minimum
between mutually insulated parts at standard
atmospheric pressure.
Life Expectancy: Listed for the voltage source
and make and break current levels. Contact
Grayhill for more information if any of the
following is true: the life limiting criteria are
more critical than those listed; longer operation
is required; a larger make and break current is
required; the operating environment includes
elevated temperatures or reduced pressures.
Contact Carry Rating: Switch will carry
6 amperes continuously with a maximum
contact temperature rise of 20°C.

Rotary Switches

Additional Characteristics

Contact Type and Forces: Shorting or non-

shorting wiping contacts with over 80 grams
of contact force.
Shaft Flat Orientation: Flat op posite
contacting position of pole number one (see
circuit diagrams).
Terminals: Switches have the full circle of
terminals, regardless of number of active
position.

Stop Strength: 7.5 pound-inches minimum
Rotational Torque: 8–24 ounce-inches,

depending on the number of poles.

PROCESS SEALED–Style T

Switch can be mounted on PC board with other
components and subjected to wave soldering
and conventional board cleaning techniques. No
secondary wiring or soldering is necessary.

Bushing is o-ring sealed; epoxy potting seals the
terminals and the rear of the switch. Designed
for PC assembly, this sealing technique can also
be applied to solder lug terminal switches. A
bushing to panel seal can also be added to the
process sealed versions. Military qualified ver­sions are available, see ordering information.

Materials and Finishes

Switch Base: Thermoset
Detent Rotor: Nylon
Shaft, Stop Blades, Stop Arm, Thrust washer,
and Retaining Ring: Stainless steel
Detent Balls: Steel, nickel-plated
Bushing:Zinc,tin-zincplated
Detent and Contact Springs: Stainless steel
Common Ring: Brass, gold-plated over silver

plate.
Terminals: Brass, gold-plated over silver plate
and nickel plate

1/4" SHAFT: Style K

Rotor Contact: Precious metal alloy, gold-

plated

Panel Seal: Silicone rubber
Shaft Seal: Fluorosilicone
Mounting Nuts:Brass,tin-zincplated
Mounting Hardware: One mounting nut .089"

thick by .375" across flats and one internal tooth
lockwasher are supplied with the switch.
Maximum Mounting Torque: 15in-lbs

Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: [phone] • Fax: [phone] • www.grayhill.com

Single Deck Rotary Switches

Stop
Blade
Slots

Plastic
Washer

Stop

Blades

.250 ± .003

(6,35 ± 0,08)

.060 ± .001

(1,52 ± 0,25)

.400

± .005

DIA.
(10,16
± 0,13)

90° ± 1°

.125
± .005
(3,16
± 0,13)

.015
(0,38)
RADIUS
MAX.

.025
± .001
(0,64
± 0,03)

C
L

1,57 ± 0,08

5,08

± 0,05

11,13

± 0,13

DIA.

90˚ ± 1˚

0,64
± 0,05

2,36
± 0,13

.015
(0,38)
RADIUS
MAX.

0.032

0.375

0.125

0.187

SEAL

"A"

.032±.005
(0,81±0,13)

.125±.015
(3,18±0,38)

.050±.005
(1,27±0,13)

7,0
±0,51

9,53
±0,38

6,35
±0,38)

4,0
±0,03

M7 x 0,75

6,0±0,08

3,15
±0,12

"A"

SUGGESTED ADJUSTABLE STOP
SUBSTITUTION GUIDE

Fixed Adj. Stop Fixed Adj. Stop
Stop Style Stop Style
Style Equivalent Style Equivalent

50A 50D 51A 51D
50C 50CD 51C 51CD
50CP 50CDP 51CP 51CDP
50M 50CD* 51M 51CD*
50MP 50CDP* 51MP 51CDP*
50P 50DP 51P 51DP
50S 50D* 51S 51D*
50SP 50DP* 51SP 51DP*

*Form fit and function equivalents, but not watertight sealed
to the panel.

ADJUSTABLE STOPS: Style D

Adjustable stops permit the user to set and reset
the number of positions per poles. Shown in
the diagram, a plastic washer can be removed
to reveal slots at the base of the bushing. Stop
blades can be inserted into the appropriate
slots to limit switch rotation. Positions per pole
configuration can thus be changed to meet the
needs of the application. Dimensions are the
same as the fixed stop version, when plastic
washer is in place. Most desirable for prototype
work. Readily available from local distributor.

SHAFT AND PANEL SEAL: Styles S and M

SCREWDRIVER SLOTTED SHAFT: Style B

METRIC SHAFT AND BUSHING: Style E

Shaft and panel seal switches
are watertight to the panel. They
are not totally process sealed
like the Style “T”. Panel is sealed
by a gasket at the base of the
bushing. Shaft is sealed by an
O-ring inside the bushing. After
mounting, seals do not alter
switch dimensions. See Style
“S” (standard switches) and
Style “M” (military switches) in
the Choices and Limitations
chart.

Form, fit and function equivalent
to standard shaft switches. The
dimensions shown have evolved
as the most popular for this
type of switch. See Style “B”
in the Choices and Limitations
chart . Previous users may
have ordered these switches
by a non-descriptive part num­ber containing a “Y”. Contact
Grayhill, if in doubt about a
cross-reference.

Metric standard dimensions
for the shaft and bushing are
shown in the drawing. Other
dimensions approximately the
same as shown in dimensional
drawing. Contact Grayhill for
exact dimensions. See Style “E”
in the Choices and Limitations
chart.

ACCESSORY: Non-Turn Washers

In Inches (and millimeters)

Part No. 50J1066

Cut round hole for the bushing and for
the non-turn tab. Washer fits the double D
bushing flats. Washer is sold only when ac­companied by an order for a like number of
switches. Washer is 302 stainless steel.

Dimensions are in millimeters

Part No. 71J1103

Designed to fit the double flatted bushing of
the metric dimensioned bushing, this non­turn washer permits a round hole for the
bushing and the tab while still preventing
switch rotation. Washer is only sold when
accompanied by a like number of switches.
Washer is 302 stainless steel.

Rotary Switches

Designed to fit the single flatted bushing of

the"K"styleswitches,thisnon-turnwasher

prevents switch rotation when using a full
round hole in the panel. Washer is only sold
when accompanied by a like number of
switches. Washer is 302 stainless steel.

Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: [phone] • Fax: [phone] • www.grayhill.com

Part No. 50J5140-4

Single Deck Rotary Switches

CHOICES AND LIMITATIONS: Series 50

A = Standard, 1/8" Shaft
B = Screwdriver Slot Shaft
C = Military, Without Panel Seal
D = Adjustable Stop (Adj. Stop)

E = Metric, 4mm Shaft

K=1/4"Shaft

M = Military

Standard Style

Angle Number Number of Shorting or
Style Choices1 of of Positions Non-Shorting
Series Std., 1/8" Shaft 1/4" Shaft Metric, 4mm Shaft Terminals Throw Poles Per Pole Contacts

36°

45°

60°

90°

36°

45°

60°

90°

50

Rotary Switches

A
AT
B
BS
BST
BT
D
S
ST

BP
BPT
BSP
BSPT
DP
P
PT
SP
SPT

K
KS
KST
KT
KB
KBS
KBST
KT

KP
KPT
KSP
KSPT
KBP
KBSP
KBSPT
KBT

E
ES
EST
ET
EB
EBS
EBST
EBT

EP
EPT
ESP
ESPT
EBP
EBSP

KBSPT

EBT

Solder

Lug

PC Mount

P = PC Mount Terminals
S = Shaft/Panel Seal (S/P Seal)
T = Process Sealed

1 02 thru 10 N or S
2 02 thru 05 N or S

1 02 thru 08 N
2 02 thru 04 N

1 02 thru 06 N
2 02 or 03 N

1 02 thru 04 N
2 02 N

1 02 thru 10 N or S
2 02 thru 05 N or S

1 02 thru 08 N
2 02 thru 04 N

1 02 thru 06 N
2 02 or 03 N

1 02 thru 04 N
2 02 N

Military Style

Angle Number Number of Shorting or
Style Choices of of Positions Non-Shorting
Series Std., 1/8" Shaft 1/4" Shaft Metric, 4mm Shaft Terminals Throw Poles Per Pole Contacts

1 02 thru 10 N or S

36°

2 02 thru 05 N or S

1 02 thru 08 N

45°

2 02 thru 04 N

1 02 thru 06 N

60°

2 02 or 03 N

1 02 thru 04 N

90°

2 02 N

1 02 thru 10 N or S

36°

2 02 thru 05 N or S

1 02 thru 08 N

45°

2 02 thru 04 N

1 02 thru 06 N

60°

2 02 or 03 N

1 02 thru 04 N

90°

2 02 N

50

C
CB
CBT
CD
CT
M
MB
MBT
MT

CBP
CBPT
CDP
CP
CPT
MBP
MBPT
MP
MPT

KM
KMB
KMBT
KMT

KMBP
KMBPT
KMP
KMPT

EM
EMB
EMBT
EMT

EMBP
EMBPT
EMP
EMPT

Solder

Lug

PC Mount

Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: [phone] • Fax: [phone] • www.grayhill.com

Single Deck Rotary Switches

CHOICES AND LIMITATIONS: Series 51

A = Standard, 1/8" Shaft
B = Screwdriver Slot Shaft
C = Military, Without Panel Seal
D = Adjustable Stop (Adj. Stop)

E = Metric, 4mm Shaft

K=1/4"Shaft

M = Military

Standard Style

Angle Number Number of Shorting or
Style Choices1 of of Positions Non-Shorting
Series Std., 1/8" Shaft 1/4" Shaft Metric, 4mm Shaft1 Terminals Throw Poles Per Pole Contacts

P = PC Mount Terminals
S = Shaft/Panel Seal (S/P Seal)
T = Process Sealed

51

A AT
B BT
S ST
BS BST

A
AT

B
BS
BST
BT
D
S
ST

P PT
BP BPT
SP SPT
BSP BSPT

BP
BPT
BSP
BSPT
DP
P
PT
SP
SPT

SEE BELOW SEE BELOW

K
KS
KST
KT

SEE BELOW

KP
KPT
KSP
KSPT

E
ES
EST
ET

SEE BELOW

EP
EPT
ESP
ESPT

Solder

Lug

Solder

Lug

PC Mount

PC Mount

22.5°

30°

22.5°

30°

1 02 thru 16 N or S
2 02 thru 08 N or S

1 02 thru 12 N or S
2 02 thru 06 N or S
3 02 thru 04 N or S
4 02 or 03 N or S

1 02 thru 16 N or S
2 02 thru 08 N or S

1 02 thru 12 N or S
2 02 thru 06 N or S
3 02 thru 04 N or S
4 02 or 03 N or S

Military Style

Angle Number Number of Shorting or
Style Choices of of Positions Non-Shorting
Series Std., 1/8" Shaft 1/4" Shaft Metric, 4mm Shaft Terminals Throw Poles Per Pole Contacts

Rotary Switches

C
CB
CBT
CD
CT
M
MB
MBT

51

1

Contact Grayhill if 1/4" or metric shaft required with a 22.5° angle of throw.

Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: [phone] • Fax: [phone] • www.grayhill.com

MT

CBP
CBPT
CDP
CP
CPT
MBP
MBPT
MP
MPT

KM
KMB
KMBT
KMT

KMBP
KMBPT
KMP
KMPT

EM
EMB
EMBT
EMT

EMBP
EMBPT
EMP
EMPT

Solder

Lug

PC Mount

1 02 thru 12 N or S

30°

2 02 thru 06 N or S
3 02 thru 04 N or S
4 02 or 03 N or S

1 02 thru 12 N or S

30°

2 02 thru 06 N or S
3 02 thru 04 N or S
4 02 or 03 N or S

Single Deck Rotary Switches

ADDITIONAL FEATURES

Economy keylock switch, isolated position, spring
return, and coded switches are available in similar

series.See Keylockand Special FunctionRotary

Switch sections.

Available from your local Grayhill Distributor.

For prices and discounts, contact a local Sales Office,

anauthorizedlocalDistributor,orGrayhill.

ORDERING INFORMATION: Series 50

Series: Series 50 (36°, 45°, 60°, or 90°)
Style*: Letters from Choices Chart
Angle of Throw: 36, 45, 60, or 90

50AT36–01–1–10N–F

Stop Arrangement: Needed only with 1 pole switches with
maximum positions. Leave blank for continuous rotation;

add F for fixed stop.
Type of Contacts: N = Non-shorting, S = Shorting
Positions Per Pole: 02 as a minimum to the maximum allowable

Use Letters AJ in this location if adjustable stop switch is ordered.
Poles per Deck: See chart
Number of Decks: 01 only

for the angle of throw and the number of poles per the Choices Chart.

* All rotary switches that are required to have military designated markings and testing adhering to MIL-3786 are to be ordered by specifying
the military part number identified on the appropriate slash sheet.

Rotary Switches

ORDERING INFORMATION: Series 51

Series: Series 51 (30°; 22.5°)
Style*: Letters from Choices Chart
Angle of Throw: Use 22 (for 22.5°), 30

51SPT30–01–1–12S–F

Stop Arrangement: Needed only with 1 pole switches with
maximum positions. Leave blank for continuous rotation;

add F for fixed stop.
Type of Contacts: N = Non-shorting, S = Shorting
Positions Per Pole: 02 as a minimum to the maximum allowable

Use Letters AJ in this location if adjustable stop switch is ordered.
Poles per Deck: See chart
Number of Decks: 01 only

* All rotary switches that are required to have military designated markings and testing adhering to MIL-3786 are to be ordered by specifying
the military part number identified on the appropriate slash sheet.

for the angle of throw and the number of poles per the Choices Chart.

Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: [phone] • Fax: [phone] • www.grayhill.com