Model 402

3" (76.2 mm) Single Turn Wirewound

Precision Potentiometer

Vishay Spectrol

Document Number: 57061

For technical questions, contact: sfer@vishay.com

www.vishay.com

Revision: 15-Jun-07

107

Not for New Design

DIMENSIONS in inches (millimeters)

0.625

(15.88)

± 0.031

0.800 (20.32)

± 0.010

Ø 0.7500 (19.05) MTG.

+ 0.0000

- 0.0005

Ø 0.2497

(6.34)

+ 0.0000

- 0.0003

± 0.015

MTG. FACE

9°

TYP.

45°

± 5°

1.640 R

(41.66)

MAX.

Ø 2.250 B.C (57.15)

1.700 R MAX.

(43.18)

1

2

3

8 - 32 UNC - 2B 0.187 ± 0.015

DEEP (4.15)

3 HOLES EQUALLY SPACED

(SCREW MOUNT ONLY)

0.062

(1.57)

Ø 3.000

(76.20)

SCREW MOUNT: 402C

3.000

(76.20)

± 0.15

MTG. FACE

MTG. FACE

1

Ø 2.812 MAX.

(71.42)

0.831

(21.11)

± 0.010

0.625 (15.83)

± 0.031

0.073 MIN. (1.85)

Ø 0.2497

(6.34)

Ø 3.000

(76.20)

Ø 2.8750

MTG.

(73.02)

+ 0.0000

- 0.0003

Ø 3.000

(76.20)

± 0.015

± 0.010

± 0.015

ADD 0.500 (12.70) FOR EACH ADDITIONAL SECTION.

± 0.002

SERVO MOUNT: 402S

BUSHING MOUNT: 402B

0.705

(17.91)

0.875

(22.22)

+ 0.0000

- 0.0003

0.2497

(6.34)

+ 0.0000

- 0.0010

0.239 MIN.

(6.07)

0.375

(9.52)

0.062

(1.57)

0.340 MIN.

(8.64)

1

3

2

SCHEMATIC

CW

0.312 MIN. (7.92)

Ø 0.5937 MTG.

(15.08)

± 0.031

0.062 (1.57)

+ 0.0000

- 0.0003

0.093 (2.36)

± 0.0005

1

1

1

MECHANICAL SPECIFICATIONS

PARAMETER

Rotation

360° (continuous)

Bearing Type

Servo and Screw Mount:

Bushing Mount

Ball bearing

Sleeve bearing

Ganging

6 sections maximum

terminal alignment, added sections, within ± 10°

of section 1 terminals

Torque (Maximum)

Mounting:

Servo or Screw

1 Section

Bushing 1 Section

Each additional Section

STARTING

1.1 oz. - in (79.21 g - cm)

1.9 oz. - in (136.82 g - cm)

0.8 oz. - in (57.61 g - cm)

RUNNING

0.6 oz. - in (43.20 g - cm)

1.1 oz. - in (79.21 g - cm)

0.5 oz. - in (36.00 g - cm)

Runouts (Maximums)

Shaft (TIR/In)

Pilot dia (TIR)

Lateral (TIR)

Shaft End Play

Shaft Radial Play

SERVO

0.002" (0.05 cm)

0.002" (0.05 cm)

0.004" (0.10 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)

Each Additional Section:

Single section: 7.0 oz. (198.45 g)

2.0 oz. (56.70 g)