Bourns
Dials, Knobpots and Potentiometers
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Model H-46-6A Precision Counting Dial
H-490 Series Turns Counting Dials
1" dia. turn counting dials for use with precision potentiometers or other rotating devices
up to 30 turns. Simplified mounting, no special holes required, uses only 1" dia. panel
space. No backlash, mounted directly to shaft. Excellent legibility. Available with or without
brake. Two set screws standard on all models. Temperature Range: Ð15¡C to +85¡C.
20 turn; 113
/16" dia. Excellent legibility with black marking on chrome background. For use
with precision potentiometers and other rotating devices up to 20 turns. High force Òclick-
breakÓ. Two anti-rotation mounting systems with lug or nut. No backlash due to direct
potentiometer shaft mounting. Metal-to-metal set screw threads.
EACH
Stock
No.
Mfr.Õs
Type
Shaft
Dia.
Finish
Brake
EACH
Stock
No.
Mfr.Õs
Type
1-24 10-24 25-49 50-99 100-249
1-9
10-24
18.97
25-49
17.08
50-99
16.02
100-249
15.08
1
754-8065 H-492-3 Clear
754-8070 H-493-3 Black
754-8075 H-494-3 Black
/
4
4
"
Yes 20.23 18.74 16.88 15.83 14.91
No 20.23 18.74 16.88 15.83 14.91
Yes 20.23 18.74 16.88 15.83 14.91
1
/
"
754-8080
H-46-6A
20.47
1
/4"
Model 3600S KNOBPOT¨
Model 6639 Precision
Potentiometer
The model 6639 conductive plastic
bushing mount precision potentiometer
provides essentially infinite resolution
and excellent rotational life in a high
quality, rugged construction for general
purpose applications. They offer both
cost and space savings. The
1
/4" diameter stainless steel shaft is
7
3
/8" long FMS in a nickel plated brass
/
8" long bushing. Resistance Tolerance: ±15%. Standard Independent Linearity: ±2%. Effective
Electrical Angle: 340¡ with continuous mechanical angle. Power Rating: 1.0 watt. Mechanical
stops, servo mount and other non-standard features available as special order items. Manufacturer
literature is available upon request.
EACH
Stock
No.
Mfr.Õs
Type
1-24
10-24
25-49
50-99
100-249
10.08
10.08
10.08
11
754-0121
754-0122
754-0123
754-0124
754-0125
6639S-1-102
6639S-1-202
6639S-1-502
6639S-1-103
6639S-1-203
11.77
11.77
11.77
12.79
11.77
11.20
11.20
11.20
12.17
11.21
10.7610.43
10.7610.43
10.7610.43
3
10 turn; /
4
" dia. Highly readable integral clock face readout. Cost saving, pre-phased. Easy
mounting; drill two holes, install and secure with lock washer and nut. Power Rating:
1.5 watts @ +25¡C. Tolerance: ±5%. Temperature Range: Ð65¡C to +85¡C.
Temperature Coefficient: ±50 ppm/¡C.
11.70
10.77
11.34
10.43
10.96
10.08
EACH
Stock
No.
Mfr.Õs
Type
Ohms
Models 3682 and 3683 KNOBPOTS¨
1-9
10-24 25-49 50-99 100-249
754-7555 3600S-1-102
754-7565 3600S-1-502
754-7570 3600S-1-103
1K
5K
10K
59.92 55.49 49.96.4865
59.92 55.49 49.96.4865
59.92 55.49 49.96.4865
44.09
44.09
44.09
Model 3610S KNOBPOT¨
Rear solder terminals fit standard interconnections. In-line digital readout. Convenient
snap-in mounting with bezel. Rectangular to match other panel components. Power Rating:
2.0 watts @ +25¡C. Temperature Range: Ð25¡C to +85¡C. Temperature Coefficient:
±100 ppm/¡C. Dielectric Strength: 1000 VAC @ sea level. Resistance Tolerance: ±3%.
Two Decades
EACH
10-24 25-49 50-99 100-249
Stock
No.
Mfr.Õs
Type
Ohms
1-9
10 turn; 7/
8" dia. Cost saving; space saving; easy one-hole, snap-in mounting with integral digital
readout. Temperature Range: Ð25¡C to +85¡C. Power Rating: 1.5 watts @ +25¡C.
Temperature Coefficient: ±50 ppm/¡C. Tolerance: ±5%. Accuracy: ±0.5%.
754-7950 3682S-1-102
754-7955 3682S-1-103
754-7960 3682S-1-104 100K
1K 27.44 26.09 22.99 21.69
20.33
20.33
20.33
10K
27.44 26.09 22.99 21.69
27.44 26.09 22.99 21.69
EACH
Stock
No.
Mfr.Õs
Type
Three Decades
Ohms
1-9
10-24 25-49 50-99 100-249
754-7965 3683S-1-102
754-7970 3683S-1-502
754-7975 3683S-1-103
754-7980 3683S-1-104 100K
1K 40.5637.51 32.87 361.630.04
5K 40.5637.51 32.87 361.630.04
754-7655 3610S-1-102
754-7665 3610S-1-502
754-7670 3610S-1-103
1K
5K
10K
60.94 56.44 50.80 47.64
60.94 56.44 50.80 47.64
60.94 56.44 50.80 47.64
44.84
44.84
44.84
10K
40.5637.51 32.87 361.630.04
40.5637.51 32.87 361.630.04
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