H-23-3A datasheet, PDF - EEWORLD Datasheet

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H-23-3A: DescriptionKnobs u0026 Dials 22mm 0-15turns; CategoryTopical application Mechanical and electrical/engineering/automation; File Size133KB，1 Pages; ManufacturerBourns; Websitehttp://www.bourns.com

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H-23-3A Overview

Knobs u0026 Dials 22mm 0-15turns

H-23-3A Parametric

Parameter Name	Attribute value
Product Category	Knobs & Dials
Manufacturer	Bourns
RoHS	No
Product	Dials
Type	Turns-Counting Dial
Shaft Diameter	1/8 in
Outside Diameter	23 mm
Height	22 mm
Design	Concentric with Brake
Indicator Style	Numbers, 15-Turn
Features	Turns-Counting Dial

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Features

■

No backlash

■

Compact - requires minimal panel space

■

Black on polished chrome background

■

RoHS compliant*

(22.2 mm diameter requirement)

■

For use with precision potentiometers or

other rotating devices, up to 15 turns

■

Designed for metal shaft

■

High Force “Click Brake”

H-23 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 ...................................................................................................................6.95 oz-in. (500 g-cm) minimum

Markings ......................................................................................................................................Black on polished chrome background

Locking Brake ...................................................................................................................................................................................... Yes

Weight ......................................................................................................................................................................... 15 grams (0.53 oz.)

Set Screw ......................................................................................................................................................... UNC N2-56, 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 ................................................................................................................... 18.1 mm (0.712 in.) minimum

22.2 mm (0.875 in.) maximum

Bushing Extension Beyond Panel .............................................................................................................. 9.53 mm (0.375 in.) maximum

H-23 MOUNTING INSTRUCTIONS

1. Insert potentiometer in panel.

2. Install anti-rotation device using hardware supplied with

potentiometer.

3. Turn potentiometer shaft counterclockwise to minimum

resistance or voltage ratio.

POTENTIOMETER

HARDWARE

KEY SLOT SUPPLIED WITH

(INSIDE) POTENTIOMETER

Set the dial to “0.0” and brake on.

Insert the dial on the potentiometer shaft lightly against the

panel.

Tighten set screw to potentiometer shaft.

KEYED TO

ANTIROTATION DEVICE

POTENTIOMETER

MOUNTING HOLE

OUTER RING

9.52

(.374)

10.36

TYP.

(.407)

SET SCREW

PANEL

ANTIROTATION

DEVICE

TURNS-COUNTING

DIAL

1.98

(.077)

PANEL HOLE

PATTERN

Dimensional Drawings

How To Order

Part

Number

H-23-6A

H-23-6M

H-23-3A

1.95

DIA.

(.077)

9.5

(.374)

22.2

(.874)

16.5

(.649)

Accepts

Shaft

Diameter

6.35

(.250)

6.0

(.236)

3.17

(.124)

Finish

Polished

chrome

Polished

chrome

Polished

chrome

DIMENSIONS:

9.53

(.375)

18.1

MIN.

(.712)

22.2

MAX.

(.874)

3.30

(.130)

14.50

(.571)

(INCHES)

4.00

(.157)

21.30

(.839)

REV. 10/12

*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.

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