DIMENSIONS in inches (millimeters)
Document Number: 57088
Revision: 09-Nov-06
MECHANICAL SPECIFICATIONS
PARAMETER
Mounting
Numeral Size:
Counter Wheel:
Graduated Dial:
Graduation Size:
Numeral and Every
Fifth
Intermediate
Width
Weight
ORDERING INFORMATION/DESCRIPTION
Example: 21 - A - 11
SAP PART NUMBERING GUIDELINES
MODEL
21
(14.27)
0.562
MODEL
21
SHAFT DIAMETER AND ACCOMODATION
(2.39)
0.094
A
B 6 mm metric bore shaft adapter
C
1
1
/
/
0.90 H x 0.013" W (2.29 x 0.33 cm)
4
8
" Shaft (standard)
" Shaft adapter
0.109 x 0.018" (2.77 x 0.46 cm)
hex socket set screw located
Ø 0.250
Direct to shaft with # 4 - 40
Ø 0.390
(6.35)
(3.18)
0.125
(9.91)
adjacent to No.75 on
0.035" L (0.89 cm)
0.55" L (1.40 cm)
0.012" (0.30 cm)
3.0 max. (85.05)
46.02 mm Diameter 15 Turn Dial
graduated dial.
± 0.001
A
± 0.001
- 0.000
± 0.005
- 0.000
SHAFT DIAMETER
DRIVE SLEEVE
For technical questions, contact: sfer@vishay.com
A
0.046
(1.17)
0.128
(3.25)
± 0.000
- 0.015
MOUNTING FACE
(25.40)
11. Satin chrome, black markings
21. Black chrome, white markings
31. Brushed chrome, black markings
1.000
FINISH AND OTHER FEATURES
± 0.015
(6.81)
(14.68)
(23.42)
0.268
0.578
0.922
SET SCREW*
FEATURES
• Round vernier scale
• 1
•
• Satin chrome finish with black markings
• Black chrome finish with white markings
• Brushed chrome finish with black markings
TURNING KNOB
± 0.015
± 0.031
OPERATIONAL SPECIFICATIONS
Readout and Operation
Transfer Point
Rotation
Accuracy
± 0.015
- 0.000
1
/
4
13
" or
/
16
11
FINISH
" dia.
1
11
/
8
" or 6 mm metric bore shaft adapter
1.094 R MAX.
(27.79)
the drive sleeve. Graduated circular dial
The number in center of window shall
indicates completed number of turns of
Zero blacklash between graduated dial
Readout shall increase with clockwise
GRADUATED DIAL
and decrease with counterclockwise
The number in window (0 thru 14)
indicates the percent of the partial
*SET SCREW LOCATION AT
NO 75 ON DIAL FACE
change as graduated dial rotates
COUNTING DIAL
BASE
PACKAGING
BRAKE LEVER
Ø 1.812 P
(46.02)
B010
turn of the drive sleeve
22°
and the drive sleeve
between 94 and 0
1499 turns total
± 5°
Vishay Spectrol
PACKAGING
rotation
46°
B10
± 5°
Model 21
LEAD FINISH
www.vishay.com
e
RoHS
COMPLIANT
175