H22-6A-1 Bourns Inc., H22-6A-1 Datasheet - Page 6

• Manufacturer Part Number: H22-6A-1
• Description: COUNTING DIAL, ANALOG, 15 TURN
• Manufacturer: Bourns Inc.
• Series: H22r

Specifications of H22-6A-1

• Accessory Type: Counting Dial
• Shaft Diameter: 6.35mm
• No. Of Turns: 15
• Body Material: Chrome
• Svhc: No SVHC
• Rohs Compliant: NA
• For Use With: Precision Potentiometers / Rotating Devices Upto 15 Turns
• Lead Free Status / RoHS Status: na

Number of Turns.............................................................................................................................................................................................................0 to 30
Dial Divisions..........................................................................................................................................................................................................100 per turn
Readability - Over 10 Turns .................................................................................................................................................................................1 part in 1000
Torque With Brake Engaged ..........................................................................................................................................................................5 oz-in. minimum
Weight.....................................................................................................................................................................................................Approximately 1/4 oz.
Markings........................................................................................................................................................................................White on black background
Set Screws.................................................................................................................................................................................................2 screws 120º apart
Operating Temperature Range..........................................................................................................................................................................-15ºC to +85ºC
Mechanical Life ...................................................................................................................................................................................................10,000 cycles
Set Screw Tightening Torque........................................................................................................................................................................2 in-lbs. minimum
Shaft Extension Beyond Panel ...................................................................................................................................................................15.75mm minimum
Bushing Extension Beyond Panel................................................................................................................................................................9.02mm maximum
H-490 MOUNTING INSTRUCTIONS
1. Discard standard mounting nut and lockwasher supplied with
2. Insert potentiometer in panel.
3. Using parts supplied with dial, position anti-rotation washer
4. Install mounting nut supplied with dial. Be sure:
136
FEATURES
• For use with precision potentiometers or other rotating devices
• Readability - 1 part in 1000 for ten turns
• Simplified mounting - no special panel holes required
• Compact - requires only 25.4mm diameter panel space
Dimensional Drawings
Mechanical and Physical Characteristics
Environmental Characteristics
Shaft and Bushing Requirements
Dimensions are
the potentiometer; they will not be used.
against panel. Tangs of washer should stick out from panel.
a. Shoulder on nut engages hold of anti rotation washer.
b. Tangs of anti-rotation washer are aligned vertically. This
up to 30 turns
positions the turns-counting window properly.
(1.0)
25.4
(inches)
2
0
5
DIA.
mm
45° ± 10°
(.720)
18.29
BRAKE
RAD. MAX.
Number
H-493-2
H-494-2
H-491-3
H-492-3
H-493-3
H-494-3
H-492-2
Part
(.500)
(.440)
11.18
12.7
Features
H-490 Turns-Counting Dial
Fits Shaft
Diameter
3.18mm
3.18mm
6.35mm
6.35mm
6.35mm
6.35mm
3.18mm
No backlash - mounted directly to poten-
tiometer shaft
For use with precision potentiometers or
other rotating devices up to 30 turns
Compact size - requires only 25.4mm
diameter panel space
Available with or without brake
(.909 ± .029)
23.11 ± .76
30° ± 5°
6.35mm-32UNEF-2A
6.35mm-32UNEF-2A
9.53mm-32UNEF-2A
9.53mm-32UNEF-2A
9.53mm-32UNEF-2A
9.53mm-32UNEF-2A
6.35mm-32UNEF-2A
Fits Bushing Size
• No backlash - mounted directly to potentiometer shaft
• Standard models available for 2.38mm, 3.18mm and 6.35mm
• Excellent legibility - white marking on black background
• Two set screws - standard on all models
• Available with or without brake
5. Turn potentiometer shaft counterclockwise to minimum
6. Loosen set screw in knob of dial assembly. Set dial to “0.00”
7. Holding outer ring of dial assembly, engage locating tangs on
8. While holding outer ring, position unit lightly against panel.
diameter shafts
resistance or voltage ratio. This is not necessarily at the end of
travel.
reading. Slip dial assembly over end of potentiometer shaft.
anti-rotation washer in notches on dial assembly.
Uniformly tighten knob set screws to potentiometer shaft with
furnished hex wrench.
Brake
Yes
Yes
Yes
Yes
No
No
No
Body Finish
Black
Black
Clear
Clear
Black
Black
Clear
Specifications are subject to change without notice.
21.21mm maximum