T PL IA N M CO *R oH S Features Applications Large package size Power supplies For use with precision potentiometers up to Sensors 20 turns Excellent readability Precision feel - no backlash Cast housing RoHS compliant* Medical Automation Test equipment H-46 Turns-Counting Dial Mechanical and Physical Characteristics Number of Turns ............................................................................................................................................................................. 0 to 20 Dial Divisions ...........................................................................................................................................................................100 per turn Readability - Over 10 Turns .....................................................................................................................................Within 1/100 of a turn Torque With Brake Engaged ..............................................................................................................21.18 N-cm (30.0 oz.-in.) maximum Markings ..................................................................................................................................................... Black on chrome background Locking Brake .......................................................................................................................................................................................Yes Weight ............................................................................................................................................................................73 grams (2.5 oz.) Set Screw ..........................................................................................................................................................UNC N4-44, one included Set Screw Tightening Torque ...............................................................................................................16.94 N-cm (1.5 lbs.-in.) minimum Hex Key Size ........................................................................................................................................................................... 1.5 mm hex Shaft and Bushing Requirements Shaft Diameter Requirements ................................................................................................................................... Refer to chart below Shaft Extension Beyond Panel .................................................................................................................... 17.5 mm (0.689 in.) minimum 23.5 mm (0.925 in.) maximum Bushing Extension Beyond Panel ................................................................................................................ 4.5 mm (0.177 in.) maximum H-46 MOUNTING INSTRUCTIONS Using the existing Antirotation Lug 1. Drill 3.2 mm (0.125) diameter antirotation pin hole on vertical centerline 14.3 mm (0.562) below center of potentiometer mounting hole. 2. Mount potentiometer shaft counterclockwise to obtain minimum resistance or voltage ratio. This is not necessarily identical with the mechanical stop. 3. Loosen set screws in knob of dial. Set dial to "0.0" reading. 4. While holding outer ring of dial, position unit lightly against panel. Tighten knob set screws to potentiometer shaft. Dimensional Drawings 4. 5. Using the Antirotation Device 1. Remove antirotation lug from dial by using pliers. 2. Mount potentiometer in panel with antirotation device nut (supplied with dial) and lockwasher (supplied with potentiometer). 3. Turn potentiometer shaft counterclockwise to obtain minimum resistance or voltage ratio. This is not necessarily identical with the mechanical stop. Loosen set screws in knob of dial. Set dial to "0.0" reading. While holding outer ring of dial, position unit lightly against panel. Tighten knob set screws to potentiometer shaft. How To Order Part Number 24.0 (.944) 12.50 (.492) PANEL LAYOUT 10.31 DIA. (.405) Accepts Shaft Diameter H-46-6A 6.35 mm (.250) H-46-6M 6 mm (.236) Finish Satin Chrome Satin Chrome 46.0 (1.811) DIMENSIONS: MM (INCHES) 14.30 (.562) 3.17 DIA. (.124) REV. 01/14 WARNING Cancer and Reproductive Harm www.P65Warnings.ca.gov *RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. Legal Disclaimer Notice This legal disclaimer applies to purchasers and users of Bourns(R) products manufactured by or on behalf of Bourns, Inc. and P[ZHSPH[LZJVSSLJ[P]LS)V\YUZ Unless otherwise expressly indicated in writing, Bourns(R) products and data sheets relating thereto are subject to change ^P[OV\[UV[PJL<ZLYZZOV\SKJOLJRMVYHUKVI[HPU[OLSH[LZ[YLSL]HU[PUMVYTH[PVUHUK]LYPM[OH[Z\JOPUMVYTH[PVUPZJ\YYLU[ and complete before placing orders for Bourns(R) products. The characteristics and parameters of a Bourns(R) product set forth in its data sheet are based on laboratory conditions, and statements regarding the suitability of products for certain types of applications are based on Bourns' knowledge of typical requirements in generic applications. 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