COUNTING DIAL 0-20 TURNS

H-46-6A

Manufacturer Part NumberH-46-6A
DescriptionCOUNTING DIAL 0-20 TURNS
ManufacturerBourns Inc.
SeriesH-46
TypeDial
H-46-6A datasheet
 

Specifications of H-46-6A

Shaft Size0.25" (6.35mm)Number Of Turns20
DesignHex Set ScrewDiameter17.5 mm
ColorSatin ChromeApplicationPower supplies, sensors, medical, automation, test equipment.
Dial Division100 per TurnDial TypeTurns-Counting, Analog
Diameter, Shaft0.25 "Dimensions1.811"Dia×0.944"L
FinishSatin ChromeMounting TypePanel
Range20 TurnsSize, Hex Key0.05 in.
Torque, Tightening16.94 N-cm (Min.)Weight2.5 Oz.
Lead Free Status / RoHS StatusLead free / RoHS CompliantFor Use WithFor precision potentiometers or other rotating devices up to 20 turns
Other namesQ1144838  
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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
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.
Dimensional Drawings
24.0
(.944)
12.50
(.492)
10.31
DIA.
(.405)
46.0
(1.811)
14.30
(.562)
DIMENSIONS:
Features
Large package size
For use with precision potentiometers up to
20 turns
Excellent readability
Precision feel - no backlash
Cast housing
RoHS compliant*
H-46 Turns-Counting Dial
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.
PANEL LAYOUT
3.17
DIA.
(.124)
MM
(INCHES)
Customers should verify actual device performance in their specifi c applications
Applications
Power supplies
Sensors
Medical
Automation
Test equipment
23.5 mm (0.925 in.) maximum
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.
How To Order
Part
Accepts Shaft
Number
Diameter
Finish
Satin
H-46-6A
6.35 mm (.250)
Chrome
Satin
H-46-6M
6 mm (.236)
Chrome
REV. 03/09
*RoHS Directive 2002/95/EC Jan 27 2003 including Annex.
Specifi cations are subject to change without notice.