Model 208
Vishay Spectrol
1 3/4" (44.5 mm) Single Turn Conductive Plastic
Precision Potentiometer
DIMENSIONS in inches (millimeters)
SERVO MOUNT: 208 S
0.010
0.031
0.831
(21.10)
0.625
(15.88)
16° 20°
TYP.
1
0.340 MIN.
3
1
2
(8.64)
0.073 MIN.
(1.85)
5°
45°
0.093
(2.36)
1.075 R MAX.
(27.30)
0.015
Ø 1.750
(44.45)
Ø 1.750
(44.45)
+ 0.0000
- 0.0005
Ø 1.562
MAX.
(39.67)
Ø 1.5620
(39.67)
0.062
(1.57)
Ø 0.2497 +- 00..00000030
(6.34)
MTG. FACE
1.015 R MAX.
(25.78)
1
0.010
0.031
0.705
0.875
(22.22)
(17.91)
0.015
BUSHING MOUNT: 208 B
0.375
(9.52)
3/8 - 32 UNEF - 2A
0.239 MIN.
(6.07)
+ 0.0000
- 0.0003
Ø 0.2497
(6.34)
0.062
(1.57)
0.015
Ø 1.750
(44.45)
+ 0.0000
- 0.0010
Ø 1.000
(25.40)
Ø 0.4062
(10.32)
0.010
(0.25)
MTG. FACE
2
ADD 0.500 0.002 (12.70) FOR EACH
ADDITIONAL SECTION
1
CW
1
3
TOLERANCES: UNLESS OTHERWISE NOTED.
DECIMALS 0.005 ANGLES 2°
SCHEMATIC
MECHANICAL SPECIFICATIONS
PARAMETER
Rotation
360° continuous
SERVO MOUNT
Ball bearing
BUSHING MOUNT
Sleeve bearing
Bearing Type
Ganging
6 sections maximum terminal alignment, added
sections within 10° of section 1 terminals
Torque (Maximums)
Servo Section 1
Bushing Section 1
Each Additional Section
STARTING
RUNNING
0.7 oz. - in (50.40 g - cm)
1.0 oz. - in (72.0 g - cm)
0.4 oz. - in (28.80 g - cm)
0.4 oz. - in (28.80 g - cm)
0.7 oz. - in (50.40 g - cm)
0.3 oz. - in (21.60 g - cm)
Mechanical Runouts (Maximums):
Shaft (TIR/in)
SERVO
BUSHING
0.002" (0.05 cm)
0.002" (0.05 cm)
0.003" (0.08 cm)
0.005" (0.13 cm)
0.002" (0.05 cm)
0.002" (0.05 cm)
0.002" (0.05 cm)
0.005" (0.13 cm)
0.005" (0.13 cm)
0.003" (0.08 cm)
Pilot Dia. (TIR)
Lateral (TIR)
Shaft End Play
Shaft Radial Play
Moment of Inertia
1.0 g - cm2 per section maximum
Weight:
Single Section
Each Additional Section
3.0 oz. (85.05 g)
1.0 oz. (28.35 g)
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For technical questions, contact: sfer@vishay.com
Document Number: 57053
Revision: 04-Mar-08