Model 708

www.vishay.com

Vishay Spectrol

Revision: 27-Mar-15

2

Document Number: 57070

For technical questions, contact: sferprecisionpot@vishay.com

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

DIMENSIONS in inches (millimeters)

MECHANICAL SPECIFICATIONS

PARAMETER

Rotation

360° continuous

Bearing type



Servo mount:



Bushing mount:

Ball bearing

Sleeve bearing

Torque (maximum)



Servo, 1 section



Bushing, 1 section



Each additional section

STARTING

0.10 oz. - in (7.20 g - cm)

0.25 oz. - in (18.00 g - cm)

0.10 oz. - in (7.20 g - cm)

RUNNING

0.085 oz. - in (6.12 g - cm)

0.20 oz. - in (14.40 g - cm)

0.075 oz. - in (5.40 g - cm)

Runouts (maximum)



Shaft runout (TIR/in)



Pilot dia. runout (TIR)



Lateral runout (TIR)



Shaft end play



Shaft radial play

SERVO

0.002" (0.05 cm)

0.002" (0.05 cm)

0.002" (0.05 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)

0.004" (0.10 cm)

Weight (maximum)



Single section:



Each additional section:

0.6 oz. (17.0 g)

0.2 oz. (5.67 g)

Ganging

6 sections max, terminal alignment, added sections within ± 10° of section 1 terminals

Moment of inertia

0.12 g - cm2 per section maximum

SERVO MOUNT: 708S/708-2

BUSHING MOUNT: 708B/708-1

0.687

(17.45)

± 0.010

0.500

(12.70)

± 0.031

0.062

(1.57)

Ø 0.875

(22.22)

Ø 0.7500

(19.05)

+ 0.0000

- 0.0005

Ø 0.1248

(3.17)

+ 0.0000

- 0.0003

MTG. FACE

Ø 0.875

(22.22)

± 0.015

Ø 0.750

MAX.

(19.05)

0.062

(1.57)

0.687

(17.45)

± 0.031

0.500

(12.70)

± 0.010

0.250

(6.35)

± 0.015

3/

8 - 32 UNEF -2A

Ø 0.875

(22.22)

Ø 0.4062

(10.32)

± 0.015

+ 0.0000

- 0.0010

Ø 0.1248

(3.17)

+ 0.0000

- 0.0003

MTG. FACE

0.062

(1.57)

0.308 MIN.

(7.82) TYP.

3

1

2

30°

TYP.

0.640 R MAX.

(16.26)

1

ADD 0.500 ± 0.002 (12.70) FOR EACH

ADDITIONAL SECTION

TOLERANCES: UNLESS OTHERWISE NOTED.

DECIMALS ± 0.005 ANGLES ± 2°

CW

SCHEMATIC

2

3

1

0.062

(1.57)

1

1