Model 21

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Vishay Spectrol

Revision: 01-Apr-2021

1

Document Number: 57088

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

46.02 mm Diameter 15 Turn Dial

FEATURES

• Round vernier scale

•1 13/16" dia.

• 1/4" or 1/8" or 6 mm metric bore shaft adapter

• Satin chrome finish with black markings

• Brushed chrome finish with black markings

• Material categorization: for definitions of compliance

please see www.vishay.com/doc?99912

QUICK REFERENCE DATA

Sensor type

DIALS

Market appliance

Industrial

Dimensions

46 mm dia.

MECHANICAL SPECIFICATIONS

PARAMETER

Mounting

Direct to shaft with # 4 to 40

hex socket set screw located

adjacent to no. 75 on graduated dial

Numeral size:

Counter wheel:

Graduated dial:

0.90" H x 0.013" W (2.29 cm x 0.33 cm)

0.109" x 0.018" (2.77 cm x 0.46 cm)

Graduation size:

Numeral and every

Fifth

Intermediate

Width

0.55" L (1.40 cm)

0.035" L (0.89 cm)

0.012" (0.30 cm)

Weight

3.0 oz. max. (85.05 g)

OPERATIONAL SPECIFICATIONS

Readout and operation

1499 turns total

The number in window (0 thru 14)

indicates completed number of turns of

the drive sleeve. Graduated circular dial

indicates the percent of the partial

turn of the drive sleeve

Transfer point

The number in center of window shall

change as graduated dial rotates

between 94 and 0

Rotation

Readout shall increase with clockwise

and decrease with counterclockwise

rotation

Accuracy

Zero blacklash between graduated dial

and the drive sleeve

DIMENSIONS in inches (millimeters)

ORDERING INFORMATION / DESCRIPTION

21

A

11

B010

e

MODEL

SHAFT DIAMETER AND ACCOMMODATION

FINISH AND OTHER FEATURES

PACKAGING

LEAD FINISH

A 1/4" shaft (standard)

B 6 mm metric bore shaft adapter

C 1/8" shaft adapter

11. Satin chrome, black markings

31. Brushed chrome, black markings

Example: 21 - A - 11

SAP PART NUMBERING GUIDELINES

21

A

11

B10

MODEL

SHAFT DIAMETER

FINISH

PACKAGING

0.562

(14.27)

0.094

(2.39)

0.125

(3.18)

± 0.001

Ø 0.250

(6.35)

± 0.005

- 0.000

Ø 0.390

(9.91)

DRIVE SLEEVE

MOUNTING FACE

TURNING KNOB

SET SCREW*

0.046

(1.17)

± 0.000

- 0.015

0.128

(3.25)

0.268

(6.81)

0.578

(14.68)

0.922

(23.42)

± 0.015

± 0.015

- 0.000

± 0.031

COUNTING DIAL

BRAKE LEVER

GRADUATED DIAL

BASE

Ø 1.812 P

(46.02)

1.094 R MAX.

(27.79)

± 5°

46°

± 5°

22°

*SET SCREW LOCATION AT

NO 75 ON DIAL FACE

1.000

(25.40)

± 0.015

± 0.001

- 0.000