Model 21 www.vishay.com Vishay Spectrol 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 QUICK REFERENCE DATA Sensor type Market appliance * Material categorization: For definitions of compliance please see www.vishay.com/doc?99912 DIALS Industrial Dimensions 46 mm dia. MECHANICAL SPECIFICATIONS OPERATIONAL SPECIFICATIONS PARAMETER 1499 turns total The number in window (0 thru 14) Readout and operation indicates completed number of turns of the drive sleeve. Graduated circular dial indicates the percent of the partial turn of the drive sleeve Direct to shaft with # 4 to 40 hex socket set screw located adjacent to no. 75 on graduated dial Mounting 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 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 0.55" L (1.40 cm) 0.035" L (0.89 cm) 0.012" (0.30 cm) Weight 3.0 max. (85.05) DIMENSIONS in inches (millimeters) MOUNTING FACE DRIVE SLEEVE COUNTING DIAL BRAKE LEVER 1.094 R MAX. (27.79) 0.015 1.000 (25.40) 22 5 5 46 TURNING KNOB 0.562 (14.27) 0.094 (2.39) 0.125 (3.18) 0.000 - 0.015 0.001 0.046 (1.17) 0.128 (3.25) 0.001 0.250 - 0.000 O (6.35) 0.005 0.390 - 0.000 O (9.91) SET SCREW* 0.268 (6.81) O 1.812 P (46.02) 0.015 BASE GRADUATED DIAL 0.015 0.578 - 0.000 (14.68) *SET SCREW LOCATION AT NO 75 ON DIAL FACE 0.031 0.922 (23.42) 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 Revision: 05-Jul-12 Document Number: 57088 1 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 Legal Disclaimer Notice www.vishay.com Vishay Disclaimer ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, "Vishay"), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other disclosure relating to any product. Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special, consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular purpose, non-infringement and merchantability. Statements regarding the suitability of products for certain types of applications are based on Vishay's knowledge of typical requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements about the suitability of products for a particular application. It is the customer's responsibility to validate that a particular product with the properties described in the product specification is suitable for use in a particular application. Parameters provided in datasheets and / or specifications may vary in different applications and performance may vary over time. All operating parameters, including typical parameters, must be validated for each customer application by the customer's technical experts. Product specifications do not expand or otherwise modify Vishay's terms and conditions of purchase, including but not limited to the warranty expressed therein. Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining applications or for any other application in which the failure of the Vishay product could result in personal injury or death. Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners. (c) 2017 VISHAY INTERTECHNOLOGY, INC. ALL RIGHTS RESERVED Revision: 08-Feb-17 1 Document Number: 91000 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Vishay: 021-1-11 021-1-21 21A11B10