PL IA N T Features CO M ■ Compact, requires only 22.8 mm diameter panel space *R oH S ■ No backlash ■ For use with precision potentiometers or other rotating devices up to 15 turns ■ Designed for use with plastic shafts ■ RoHS compliant* H-516 Turns-Counting Dial Mechanical and Physical Characteristics Number of Turns ............................................................................................................................................................................. 0 to 15 Dial Divisions.............................................................................................................................................................................50 per turn Readability - Over 10 Turns ............................................................................................................................................... 2 parts in 1000 Torque With Brake Engaged ......................................................................................................................5.0 N-cm (7.0 oz-in.) minimum Markings..........................................................................................................................................................White on black background Locking Brake ...................................................................................................................................................................................... Yes Weight ...........................................................................................................................................................................7 grams (0.25 oz.) Screws ............................................................................................................................ Slotted 4-40UN, 2 screws included, 120 º apart Screw Tightening Torque...................................................................................................................... 16.94 N-cm (1.5 lbs.-in.) minimum Shaft and Bushing Requirements Shaft Diameter Requirements ....................................................................................................................................Refer to chart below Shaft Extension Beyond Panel ................................................................................................................. 17.5 mm (0.6890 in.) minimum 22.5 mm (0.8858 in.) maximum Bushing Extension Beyond Panel ............................................................................................................... 10 mm (0.3937 in.) maximum H-516 MOUNTING INSTRUCTIONS 1. Drill 2.0 mm (.0787 in.) diameter anti-rotation pin hole on vertical centerline, 9.5 mm (.375 in.) below center of potentiometer mounting hole. 2. Mount potentiometer in panel with nut and lockwasher supplied with the potentiometer. 3. Turn potentiometer shaft counterclockwise to obtain minimum resistance or voltage ratio. This is not necessarily identical with mechanical stop. 4. Loosen set screws in knob of dial. Set dial to “0.0” reading. 5. While holding outer ring of dial, position unit lightly against panel. Tighten knob set screws to potentiometer shaft. POTENTIOMETER MOUNTING WASHER AND NUT SUPPLIED WITH POTENTIOMETER 2 SET SCREWS POTENTIOMETER MOUNTING HOLE 9.5 (.374) 2.0 (.079) Dimensional Drawings 0 30 0 50 40 17.0 MAX. (.669) 1.4 (.055) 6 1.1 (.043) 70 9.5 (.374) 80 20 0 10 9 14.8 (.583) TOLERANCES: EXCEPT WHERE NOTED .51 .13 DECIMALS: .XX ± .XXX ± (.020) (.005) FRACTIONS: ±1/64 MM DIMENSIONS: (IN.) 10.3 TYP. (.406) 22.8 (.898) 24.8 (.976) How To Order Part Number Accepts Shaft Diameter Finish H-516-3A H-516-6A H-516-6M 3.17 mm (.125) 6.35 mm (.250) 6 mm (.236) Satin Chrome Satin Chrome Satin Chrome REV. 11/12 *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. Customers should verify actual device performance in their specific applications. Asia-Pacific: Tel: +886-2 2562-4117 Fax: +886-2 2562-4116 Europe: Tel: +41-41 768 5555 Fax: +41-41 768 5510 The Americas: Tel: +1-951 781-5500 Fax: +1-951 781-5700 www.bourns.com