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H-46-6M Datasheet(PDF) 1 Page - Bourns Electronic Solutions

Part No. H-46-6M
Description  H-46 Turns-Counting Dial
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Maker  BOURNS [Bourns Electronic Solutions]
Homepage  http://www.bourns.com
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Features
Large package size
For use with precision potentiometers up to
20 turns
Excellent readability
Precision feel - no backlash
Cast housing
RoHS compliant*
Applications
Power supplies
Sensors
Medical
Automation
Test equipment
H-46 Turns-Counting Dial
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex.
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications
REV. 03/09
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............................................................................................................................................................................0.05 in. 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 counterclock-
wise 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.
How To Order
Part
Accepts Shaft
Number
Diameter
Finish
H-46-6A
6.35 mm (.250)
Satin
Chrome
H-46-6M
6 mm (.236)
Satin
Chrome
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 counter-
clockwise to obtain minimum
resistance or voltage ratio. This is
not necessarily identical with the
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.
Dimensional Drawings
DIMENSIONS:
MM
(INCHES)
24.0
(.944)
12.50
(.492)
46.0
(1.811)
10.31
(.405)
14.30
(.562)
3.17
(.124)
PANEL LAYOUT
DIA.
DIA.




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