H-22 Datasheet, PDF (1/1 Pages) Bourns Electronic Solutions – Turns-Counting Dials

Features
■ No backlash
■ Compact - requires minimal panel
space (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”
■ Available in three versions -
black on satin chrome
background, white on black
background or black on polished
chrome background
H-22 / H-23 Turns-Counting Dials
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 oz-in. (350 g-cm) minimum
Markings.................................Black on satin chrome background, white on black background or black on polished chrome background
Locking Brake............................................................................................................................................................................................Yes
Weight.................................................................................................................................................................................15 grams (5.3 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-22 / 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.
4. Set the dial to “0.0” and brake on.
5. Insert the dial on the potentiometer shaft lightly against the panel.
6. Tighten set screw to potentiometer shaft.
POTENTIOMETER
HARDWARE
KEY SLOT SUPPLIED WITH
(INSIDE) POTENTIOMETER
KEYED TO
ANTIROTATION DEVICE
OUTER RING
POTENTIOMETER
MOUNTING HOLE
9.52
(.374)
10.36
(.407)
TYP.
DIMENSIONS: ^MM
(IN.)
PANEL
ANTIROTATION
DEVICE
SET SCREW
TURNS-COUNTING
DIAL
1.98
(.077)
PANEL HOLE
PATTERN
9.53
(.375)
18.1
(.712)
MIN.
22.2
(.874)
MAX.
How To Order
Part
Number
Accepts Shaft
Diameter
Finish
16.5 22.2
(.649) (.874)
H-22-6A
H-22-6M
H-22-3A
6.35 mm (.250)
6 mm (.236)
3.17 mm (.124)
Satin chrome
Satin chrome
Satin chrome
H-22-6A-B 6.35 mm (.250)
All black
3.30
H-23-6A 6.35 mm (.250)
Polished chrome
(.129)
H-23-6M 6 mm (.236)
Polished chrome
H-23-3A 3.17 mm (.124)
Polished chrome
REV. 12/03
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.