OPT.

3/8-32UNEF-2A

9.53

(.375)

1.60 ± 0.25

(.063 ± .010)

OPT.

1.194 ± 0.10

(.047 ± .004)

SHAFT

6.35

(.250)

BUSHING

9.53

(.375)

Specifications are subject to change without notice.

Customers should verify actual device performance in their specific applications.

56 - Sealed 1/2 ” (12.5 mm) Panel Control w/Rotary Switch

STD. LENGTH ‘L’

.750

(19.05)

.875

(22.23)

A Style Bushing

C Style Bushing

A Style Bushing -

Flatted Shaft

DIMENSIONS:

MM

(INCHES)

How To Order

0

8/11

56

A

A

D

-

C

28

-

B

15

/

R81

L

MODEL

Code

56

Description

PC Terminals w/Rotary

Switch

BUSHING DESIGNATOR

Code

A

C

Description

3/8 ” D x 3/8 ” L Threaded

1/4 ” D x 1/4 ” L Threaded

SWITCH OPTION

Code

R80

R81

Description

SPDT CW

SPDT CCW

SHAFT LENGTH DESIGNATOR

Code

24

28

Description

3/4 “ FMS Long

7/8 ” FMS Long

RESISTANCE CODES

Code

10

13

15

18

20

22

23

Value in Ohms

1K

5K

10K

50K

100K

250K

500K

ELEMENT TAPER

TYPE/TOLERANCE

Code

B

E

D

S

Description

Linear CP ±20 %

Linear CP ±10 %

CW Audio CP ±20 %

CW Audio CP ±10 %

ANTI-ROTATION LUG /

BRACKET OPTION

Code

A

D

L

N

Description

AR Lug 90 °CW

No AR Lug or Bracket

Front Bracket

Front and Rear Bracket

NO. OF SECTIONS

Code

A

Description

Single plus Switch

RoHS IDENTIFIER

Description

Compliant

Code

L

Boldface features are Bourns

standard options. All others are

available with higher minimum

order quantities.

AVAILABLE ONLY WITH

SHAFT STYLE

BUSHING

Code

Description

Code

B

1/4 ” D Slotted End

A

C

1/4 ” D Flatted End

A

E

1/8 ” D Slotted End

C

Shaft/Bushing Styles

1/4-32UNEF-2A

OPT.

6.35

(.250)

0.79 ± 0.25

(.031 ± .010)

OPT.

0.79 ± 0.10

(.031 ± .004)

SHAFT

3.18

(.125)

BUSHING

6.35

(.250)

3/8-32UNEF-2A

OPT.

9.53

(.375)

1.52 ± 0.25

(.060 ± .010)

OPT.

5.49 ± 0.10

(.216 ± .005)

SHAFT

6.35

(.250)

BUSHING

9.53

(.375)

MAX. FLAT LENGTH

15.88

(.625)

Asia-Pacific: Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116

Europe: Tel: +41-41 768 5555 • Fax: +41-41 768 5510

The Americas: Tel: +1-951 781-5500 • Fax: +1-951 781-5700

www.bourns.com

STD. LENGTH ‘L’

.750

(19.05)

.875

(22.23)

STD. LENGTH ‘L’

.750

(19.05)

.875

(22.23)