Bourns H-46-6A Counter Poti H H-46-6A 数据表

产品代码

H-46-6A

Features

■

Large package size

■

For use with precision potentiometers up to

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.

Speciﬁ cations are subject to change without notice.

Customers should verify actual device performance in their speciﬁ c applications

REV. 03/09

*RoHS COMPLIANT

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:

(INCHES)

24.0

(.944)

12.50

(.492)

46.0

(1.811)

10.31

(.405)

14.30

(.562)

3.17

(.124)

PANEL LAYOUT

DIA.