The Ametek Gemco 1950-4 Rotating Cam Limit Switch is a versatile industrial-grade device designed for precise, repetitive sequential, automatic, or semi-automatic operations in control circuitry. With its ability to open or close independent circuits at any desired angular position of the input shaft, it offers precise control and flexibility in various applications.
The Ametek Gemco 1950-4 Rotating Cam Limit Switch is a versatile industrial-grade device designed for precise, repetitive sequential, automatic, or semi-automatic operations in control circuitry. With its ability to open or close independent circuits at any desired angular position of the input shaft, it offers precise control and flexibility in various applications.
1
DESCRIPTION
The Gemco Rotating Cam Limit Switch has been
developed to meet all requirements for an industrial
multipurpose cam-actuated limit switch in applications
where precise repetitive sequential, automatic, or semi-
automatic operations are required in control circuitry.
When motion is expressed in shaft rotation, either
through a roller chain, gear train, or directly, the Gemco
Rotating Cam Limit Switch makes it possible to open or
close independent circuits at any desired angular position
of the input shaft. Any closed circuit or open circuit from
4° to 356° is obtainable without the use of special cams.
All cam settings can be adjusted at any angular position
of the cam shaft.
MAINTENANCE & INSTALLATION
Lifetime sealed ball bearings provide smooth
maintenance-free operation and allow mounting of the
Gemco Micro-Adjust Rotating Cam Limit Switch in any
position.
NO TOOLS NECESSARY!
TO ADJUST CAM SETTING
SUGGESTED SET-UP PROCEDURE
The Gemco Micro-Adjust Cams may be adjusted either
before or after installation. The following procedure is
recommended for cam adjustment.
1. Mount the assembly and couple shaft driving member
with the shaft keyway aligned with the positioning arrow
located on the bearing end plate. The machine should be
in the start cycle position with all cams set at zero.
2. Turn cam adjustment disc to the desired setting,
observing the angular degree position markings on the
top of the cam block.
3. Follow the cam setting procedure as described inside
the cover of the enclosure.
Gemco
TM
Section 1980S
2LLMM
EASY SETUP PROCEDURE
ALL CAMS SHOWN AT ZERO CYCLE POSITION
OPEN
CLOSED
TYPICAL SETTINGS AT BEGINNING
OF MACHINE CYCLE
MOUNTING OF UNIT
Mount the assembly and couple the input shaft to
the driving member, with the shaft keyway up and in
line with the positioning arrow on the bearing end
plate. The machine should be in the start cycle
position.
ESTABLISHING CAM SHAFT
DIRECTION OF ROTATION
Cam settings should be made with the cam shaft
uppermost to the viewer. The picture at the top
illustrates this viewing position and also shows the
adjusting tool being applied to the adjusting wheel.
Shaft rotation is always established off the right
end of the unit even when the input shaft, whether
direct or through a gear reducer, is situated at the
left end. As an aid to designating shaft rotation
when gear reducer is used, consult page 10 of the
1980 Catalog Section.
CAM SETTINGS
For clockwise rotation, set “make” angle with the
black dial and “break” with the red dial for dwell
settings less than 180° or greater. Reverse colors
for dwells greater than 180°.
For counterclockwise rotation, set “make” angle
with the white dial and “break” with the yellow
dial. Reverse colors for dwells greater than 180°.
Switch connections should be made in accordance
with the illustrations to the right, which, incidentally,
are both clockwise rotating examples.
ELECTRICAL CONTACTS
The welded silver cadmium oxide contacts provide the following advantages: (1) High electrical conductiv-
ity, (2) Excellent resistance to sticking contacts, (3) Minimum electrical erosion. The presence of cadmium
oxide gives high arc quenching characteristics of cadmium without a reduction of high conductivity of fine
silver. This is because the cadmium oxide remains as discrete particles throughout the silver base and each
exhibits its own physical characteristics.
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APPLICATION NOTE
The N.O. and N.C. contacts of the single pole, double throw snap on circuits of the same snap switch has
two poles, which can be used on opposite polarities. The N.O. and N.C. circuit of each pole of the two
pole snap switch, however, must be used on the same polarity.
°0
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HCTIWSTIMIL
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Start Cycle
Position
ii
ii
i
DIRECTION OF ROTATION
4LLMM
Figure 1
NEMA 1 Style
Figure 2
NEMA 4 Style
Figure 3
NEMA 12 Style
6LLMM
Form 608
1980S.M1R
12/99.Z97
AMETEK Patriot Sensors 1080 N. Crooks Road Clawson, MI 48017
800-635-0289 248-435-0700 Fax 248-435-8120
www.ametek.com www.patriotsensors.com
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PARTS LIST SECTION - 1980
* Item not shown on drawing
It is recommended that snap switches be replaced after fifteen million operations.
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Ametek Gemco 1950-4 User manual
- Type
- User manual
- This manual is also suitable for
The Ametek Gemco 1950-4 Rotating Cam Limit Switch is a versatile industrial-grade device designed for precise, repetitive sequential, automatic, or semi-automatic operations in control circuitry. With its ability to open or close independent circuits at any desired angular position of the input shaft, it offers precise control and flexibility in various applications.
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