81/82 - 5/8 ” Square Single-Turn Panel Control
85/86 - 5/8 ” Square Single-Turn Panel Control with Rotary Switch
How To Order
8 5 A 2 A - B 2 8 - A 1 5 / R51 L
8 1 A 2 A - B 2 8 - A 1 5 / A15 L
ELEMENT TAPER RESISTANCE CODE
TYPE/TOLERANCE VALUE IN OHMS
(A) Linear Cermet ±10 % (05) - 100 (30) - 15 K
(H) Linear Cermet ±5 % (28) - 150 (16) - 20 K
(06) - 200 (17) - 25 K
(07) - 250 (18) - 50 K
(08) - 500 (19) - 75 K
(09) - 750 (20) - 100 K
(10) - 1 K (31) - 150 K
(29) - 1.5 K (21) - 200 K
(11) - 2 K (22) - 250 K
(12) - 2.5 K (23) - 500 K
(13) - 5 K (24) - 750 K
(14) - 7.5 K (25) - 1 M
(15) - 10 K
(B) Linear C-P ±20 % (10) - 1 K (18) - 50 K
(E) Linear C-P ±10 % (12) - 2.5 K (20) - 100 K
(13) - 5 K (22) - 250 K
(15) - 10 K (23) - 500 K
(16) - 20 K (25) - 1 M
(17) - 25 K
(C) CW Audio Cermet ±10 % (10) - 1 K (18) - 50 K
(D) CW Audio C-P ±20 % (12) - 2.5 K (20) - 100 K
(F) CCW Audio Cermet ±10 % (13) - 5 K (22) - 250 K
(G) CCW Audio C-P ±20 % (15) - 10 K (23) - 500 K
(S) CW Audio C-P ±10 % (17) - 25 K (25) - 1 M
(T) CCW Audio C-P ± 10 %
AVAILABLE ONLY IN
SHAFT TYPE
LENGTHS BUSHINGS
(CODE) (CODE)
A Single Plain 1/4 ” (6.35 mm) D 16,20,24,28 A, B, J
B Single Slotted 1/4 ” (6.35 mm) D 16,20,24,28 A, B, J
C Single Flatted 1/4 ” (6.35 mm) D 20,24,28 A, B, J
E Single Slotted 1/8 ” (3.18 mm) D 12,16,20,24,28 C, E, N
F Single Flatted 1/8 ” (3.18 mm) D 24 C, N
G Dual Concentric Plain 1/4 ” (6.35 mm) D - 1/8 ” (3.18 mm) D 36,40 A, J
Outer Operates Section 1
K Dual Concentric Plain 1/8 ” (3.18 mm) D - 5/64 ” (1.98 mm) D 32,36 C, N
Outer Operates Section 1
L Dual Concentric Plain 1/4 ” (6.35 mm) D - 1/8 ” (3.18 mm) D 36,40 A, J
Outer Operates Section 1/2
M Dual Concentric Plain 1/8 ” (3.18 mm) D - 5/64 ” (1.98 mm) D 32,36 C, N
Outer Operates Section 1/2
N Dual Concentric Plain 1/4 ” (6.35 mm) D - 1/8 ” (3.18 mm) D 36,40 A, J
Outer Operates Section 1/2/3
P Dual Concentric Plain 1/8 ” (3.18 mm) D - 5/64 ” (1.98 mm) D 32,36 C, N
Outer Operates Section 1/2/3
R Single Slotted 6 mm D 16,19,22,50 R, S
T Single Slotted 4 mm D 10, 13, 22 U
V Dual Concentric Plain 6 mm D - 3 mm D 30, 42 R
Outer Operates Section 1
A Plain 3/8 ” (9.53 mm) D x 3/8 ” (9.53 mm) L
B Locking 3/8 ” (9.53 mm) D x 1/2 ” (12.7 mm) L
C Plain 1/4 ” (6.35 mm) D x 1/4 ” (6.35 mm) L
E Locking 1/4 ” (6.35 mm) D x 1/2 ” (12.7 mm) L
J Plain 3/8 ” (9.53 mm) D x 1/4 ” (6.35 mm) L
N Plain 1/4 ” (6.35 mm) D x 3/8 ” (9.53 mm) L
R Plain 10 mm D x 9 mm L
S Locking 10 mm D x 12.5 mm L
U Plain 7 mm D x 6 mm L
MODEL
81 Single-Turn, PC Pins
82 Single-Turn, J-Hooks
85 Single-Turn, Pot/Rotary Switch, PC Pins
86 Single-Turn, Pot/Rotary Switch, J-Hooks
SWITCH TYPE (MODELS 85 & 86 ONLY)
(R50) DPST N.O./N.C. CW Detent In-Line Term
(R51) DPST N.O./N.C. CCW Detent In-Line Term
(R52) DPST N.O./N.O. CW Detent In-Line Term
(R53) DPST N.O./N.O. CCW Detent In-Line Term
(R56) DPST N.O./N.C. CW Detent Horz Term
(R57) DPST N.O./N.C. CCW Detent Horz Term
(R58) DPST N.O./N.O. CW Detent Horz Term
(R59) DPST N.O./N.O. CCW Detent Horz Term
# SECTIONS APPLICABLE MODELS
1 Single 81,82
2 Double 81,82,85,86
3 Triple 81,82,85,86
4 Quad 81,82,85,86
BUSHING
A Single .305 R, 90 °CW
B Double .305 R, 90 ° & 270 °CW
C Single .305 R, 270 °CW
D No Lug
E Single .531 R, 90 °CW
F Single .305 R, 180 °CW
J Single .375 R, 90 °CW
K Double .375 R, 90 ° & 270 °CW
ANTI-ROTATION LUG
RoHS IDENTIFIER
CompliantL
Models 81 & 82: Part number for multiple section
potentiometers must have a taper and resistance value for
each section.
Models 85 & 86: Part number must contain a switch type.
Boldface features are Bourns standard options.
All others are available with higher minimum order
quantities.
SHAFT AVAILABLE
LENGTH ONLY IN
(FMS) BUSHING
Code Description Code
12 3/8 ” L C, N, J
16 1/2 ” L A, C, J, N
20 5/8 ” L A, B, C, E, J, N
24 3/4 ” L A, B, C, E, J, N
28 7/8 ” L A, B, C, E, J, N
32 1 ” L A, B, C, E, J, N
36 1-1/8 ” L A, B, C, E, J, N
40 1-1/4 ” L A, B, C, E, J, N
Metric
10 10 mmL U
13 13 mmL U
16 16 mmL R, S
19 19 mmL R, S
22 22 mmL R, S, U
30 30 mmL R, S
42 42 mmL R, S
50 50 mmL R, S
REV. 11/14
Specifi cations are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specifi c applications.
