Model 302

Vishay Spectrol

2" (50.8 mm) Single Turn Wirewound

Precision Potentiometer

www.vishay.com

For technical questions, contact: sfer@vishay.com

Document Number: 57057

104

Revision: 28-Jun-07

DIMENSIONS in inches (millimeters)

1

3

2

CW

SCHEMATIC

0.800

(20.32)

± 0.010

0.625

(15.88)

0.062

(1.57)

± 0.031

Ø 2.000

(50.80)

± 0.015

Ø 0.7500

(19.05)

+ 0.0000

- 0.0005

Ø 0.2497

(6.34)

+ 0.0000

- 0.0003

MTG. FACE

0.312 MIN.

(7.92)

15° TYP.

1

2

3

1.200 R MAX.

(30.48)

8 - 32 UNC - 2B

0.187 DEEP

(4.75) 3 HOLES

EQUALLY

SPACED

Ø 1.250 B.C

(31.75)

1.140 R MAX.

(28.96)

± 0.005

45°

± 5°

0.705

(17.91)

± 0.010

0.875

(22.22)

± 0.031

0.375

(9.52)

± 0.015

Ø 2.000

(50.80)

± 0.015

Ø 0.4062

(10.32)

+ 0.0000

- 0.0010

Ø 0.2497

(6.34)

+ 0.0000

- 0.0003

MTG. FACE

0.062

(1.57)

0.239 MIN.

(6.07)

Ø 2.000

(50.80)

Ø 1.8750

(47.62)

+ 0.0000

- 0.0005

MTG. FACE

Ø 1.812

MAX. (46.02)

Ø 2.000

(50.80)

± 0.015

0.062

(1.57)

0.093

(2.36)

0.831

(21.11)

± 0.010

0.625

(15.88)

± 0.031

0.073 MIN.

(1.85)

0.340 MIN.

(8.64)

Ø 0.2497

(6.34)

+ 0.0000

- 0.0003

1

ADD 0.500 (12.70) FOR EACH ADDITIONAL SECTION

± 0.002

TOLERANCES: UNLESS OTHERWISE NOTED.

DECIMALS ± 0.005 ANGLES ± 2°

BUSHING MOUNT: 302B

SCREW MOUNT: 302C

SERVO MOUNT: 302S

1

1

MECHANICAL SPECIFICATIONS

PARAMETER

Rotation

360° (continuous)

Bearing Type

Servo and screw mount: Ball

Bushing mount: Sleeve

Ganging

6 sections maximum, terminal alignment, added

sections, within ± 10° of section 1 terminals

Torque (Maximums)

Servo and Screw (1 Section)

Bushing (1 Section)

Each added Section

STARTING

1.0 oz. - in (72.00 g - cm)

1.7 oz. - in (122.42 g - cm)

0.6 oz. - in (43.21 g - cm)

RUNNING

0.5 oz. - in (36.00 g - cm)

1.0 oz. - in (72.00 g - cm)

0.4 oz. - in (28.80 g - cm)

Mechanical Runouts (Maximums)

Shaft TIR/in

Pilot dia TIR

Lateral TIR

Shaft End Play

Shaft Radial Play

SERVO AND SCREWING

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)

BUSHING

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)

Moment of Inertia

Weight (Maximums)

Single Section:

Each Additional Section:

4.0 oz. (113.40 g)

1.2 oz. (34.02 g)