Model 28
www.vishay.com Vishay Spectrol
Revision: 10-Jul-12 1Document Number: 57082
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
28 mm Diameter Twenty-One Turn Dial
FEATURES
• Laser machined markings (e.g. logo) per
customer design
• Shaft bore variations available
• Special mounting spacers
• Material categorization: For definitions of compliance
please see www.vishay.com/doc?99912
DIMENSIONS in millimeters (inches)
QUICK REFERENCE DATA
Sensor type DIALS
Market appliance Industrial
Dimensions 28 mm diameter
TECHNICAL SPECIFICATIONS
Readout and operation
21 turns total
The number in the window (0 thru 20)
indicates the percent of a partial turn
of the drive sleeve
Brake lever
Metal brake operates a
high torque system which actuates
brake
MECHANICAL SPECIFICATIONS
PARAMETER
Temperature range - 20 °C to + 50 °C
Operating torque 0.75 oz. - in max.
Weight 23 g
Housing Metal housing treated
against corrosion
Finish Aluminum anodized
Bearing Precision ball bearing for
uniform movement
MARKING
Unit identification Manufacturer’s name
and model number
RoHS
COMPLIANT
ORDERING INFORMATION/DESCRIPTION
28 A 11 BO8 e
MODEL SHAFT DIAMETER FINISH PACKAGING LEAD
FINISH
A 1/4" dia. shaft - 1 set screw
B 6 mm metric bore - 1 set screw
C 1/8" dia. shaft - 1 set screw
11. Clear satin anodized housing,
black rotor, white markings
21. Black anodized housing,
black rotor, white markings
Example: 28 - A - 11
SAP PART NUMBERING GUIDELINES
28 A 11 B08
MODEL SHAFT DIAMETER FINISH PACKAGING
ANODISED ALUMINUM FINISH
MOUNTING SPACER
BLACK ANODISED ROTOR
25.4 mm. (1.0")
Ø 28.0 mm
(1.10")
Ø 6.35 mm
(0.250")
Ø MAX.
16.0 mm
MAX. 6.75 mm
POTS
PANEL
MAX. 24.3 mm
MIN. 16.5 mm
Legal Disclaimer Notice
www.vishay.com Vishay
Revision: 08-Feb-17 1Document Number: 91000
Disclaimer
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