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| Model 157 Vishay Spectrol (22.2 mm) Precision Industrial Potentiometer Bushing and Servo Mount Versions, Conductive Plastic FEATURES * High quality * Rugged one piece metal housing * Long rotational life * Wide operating temperature range * Linearities down to 0.25 % special * Optional sealed construction (bushing mount only) 7/ 8" RoHS COMPLIANT ELECTRICAL SPECIFICATIONS PARAMETER Resistance Resistance Tolerance Special to Linearity Special to Temperature Coefficient of Resistance Power Rating Derated to Electrical Angle End Voltage Dielectric Withstanding Insulation Resistance Output Smoothness MIL-PRF-39023 TEST PROCEDURES APPLY 1 k to 100 k 20 % 10 % 2.0 % 0.25 % 600 ppm/C 1.0 W at 40 C ambient 0 W at 125 C 340 4 0.5 % maximum 1000 VRMS, 60 Hz 100 M minimum, 500 VDC 0.1 % MECHANICAL SPECIFICATIONS PARAMETER Weight Rotation Mount Bearing Type Operating Torque Starting Running Mechanical Tolerance (in/mm) (maximum) Shaft Runout (TIR) Pilot Dia Runout (TIR) Lateral Runout (TIR) Shaft End Play Shaft Radial Play 0.002" (0.05 mm) 0.005" (0.13 mm) 0.006" (0.15 mm) 0.003" (0.08 mm) 0.002" (0.05 mm) 0.002" (0.05 mm) 0.002" (0.05 mm) 0.005" (0.13 mm) 0.002" (0.05 mm) BUSHING Sleeve bearing 0.30 oz. - in (21.6 g - cm) 0.25 oz. - in (18 g - cm) 0.5 oz. maximum (14 g) 360 (continuous) SERVO Ball bearing 0.25 oz. - in (18 g - cm) 0.15 oz. - in (10.8 g - cm) ORDERING INFORMATION/DESCRIPTION 157 MODEL B MOUNTING B = Bushing S = Servo 50K OHMIC VALUE 20 % TOLERANCE ON OHMIC VALUE C: 0.25 % Box of 10 pieces C LINEARITY BO10 PACKAGING www.vishay.com 16 For technical questions, contact: sfer@vishay.com Document Number: 57042 Revision: 18-Jun-07 Model 157 Vishay Spectrol 8" (22.2 mm) Precision Industrial Potentiometer Bushing and Servo Mount Versions, Conductive Plastic SAP PART NUMBERING GUIDELINES 157 MODEL S STYLE 502 OHMIC VALUE 502 = 5K M TOLERANCE ON OHMIC VALUE M: 20 % X: 2 % Box of 10 pieces X LINEARITY B10 PACKAGING 7/ DIMENSIONS in inches (millimeters) BUSHING MOUNT: 157B... 0.010 0.365 (9.27) 90 O 0.9.52 x 1.57 WIDE IMPERFECT THREAD AREA TERM 3 O 0.875 (22.2) TERM 2 0.176 TERMINAL RADIUS (4.47) 0.010 0.875 (22.22) 0.031 + 0.0000 O 0.2497 - 0.0003 (6.34) 0.312 (7.92) 1 2 3 157 - XXXX XXX XX% XX% XXXX XXX Country TERM 1 MARKING 0.125 (3.18) 0.015 0.345 (8.76) 0.455 0.015 (11.56) 3 LOCATING PIN O 0.062 x 0.062 (1.57 x 1.57) RETAINER: O 0.312 x 0.03 MAX. 3/ - 32 UNEF - 2A 8 2 1 CW SCHEMATIC O 0.050 (1.27) 0.062 (1.57) RETAINER O 0.20 MAX. x 0.02 MAX. (5.08) 0.062 (1.57) O 0.1248 O 0.1245 (3.17) O 0.070 (1.78) SERVO MOUNT: 157S... O 0.7500 (19.05) O 0.7495 TOLERANCES: UNLESS OTHERWISE NOTED. DECIMALS 0.005 ANGLES 2 O 0.750 (19.05) 0.062 (1.57) 0.500 0.031 (12.7) MATERIAL SPECIFICATIONS Housing/Bushing Rear Lid Shaft Terminals Bushing Mount Hardware Panel Nut Aluminum, anodized Ceramic Stainless steel Solderable Lockwasher, internal tooth steel, nickel plated Brass, nickel plated ENVIRONMENTAL SPECIFICATIONS Temperature Rotational Life Moisture Resistant Vibration Shock Salt Spray Load Life Document Number: 57042 Revision: 18-Jun-07 BUSHING 5 million shaft revolutions Yes 15 g 10 to 2000 Hz 50 g 96 h 900 h For technical questions, contact: sfer@vishay.com www.vishay.com 17 - 55 C + 125 C SERVO 10 million shaft revolutions Legal Disclaimer Notice Vishay Disclaimer All product specifications and data are subject to change without notice. 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 herein or in any other disclosure relating to any product. Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay's terms and conditions of purchase, including but not limited to the warranty expressed therein, which apply to these products. 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. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners. Document Number: 91000 Revision: 18-Jul-08 www.vishay.com 1 |
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