Datasheet

46.02 mm Diameter 15 Turn Dial
Model 21
Vishay Spectrol
www.vishay.com For technical questions, contact: [e-mail]
Document Number: 57088
125 Revision: 09-Nov-06
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
RoHS
COMPLIANT
MECHANICAL SPECIFICATIONS
PARAMETER
Mounting
Direct to shaft with # 4 - 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 Inches W (2.29 x 0.33 cm)
0.109 x 0.018 Inches (2.77 x 0.46 cm)
Graduation Size:
Numeral and every
Fifth
Intermediate
Width
0.55 Inches L (1.40 cm)
0.035 Inches L (0.89 cm)
0.012 Inches (0.30 cm)
Weight 3.0 maximum (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)
0.562
(14.27)
0.094
(2.39)
0.125
(3.18)
± 0.001
0.250
Ø (6.35)
± 0.005
- 0.000
0.390
Ø (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
1.812 ØP
(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
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 PA RT NUMBERING GUIDELINES
11
FINISH
B1 0
PACKAGING
A
SHAFT
DIAMETER
12
MODEL