Model 21
www.vishay.com Vishay Spectrol
Revision: 05-Jul-12 1Document 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
• Black chrome finish with white 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 max. (85.05)
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 ACCOMODATION 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
21. Black chrome, white 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
Legal Disclaimer Notice
www.vishay.com Vishay
Revision: 08-Feb-17 1Document Number: 91000
Disclaimer
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