AMETEK 1980 Rotating Cam Limit Switch - Manual (Page 4)

4
Description
Precision, rugged duty snap action switches,
extremely accurate cam adjustments with a heavy
duty shaft, rugged case and lifetime sealed ball
bearings, have been combined by GEMCO to
provide the most versatile and dependable Rotating
Cam Limit Switch available.
No Special Cams are Required
The accurate cam adjustments are made possible
by the use of a separate reduction drive in each half
of a circuit cam block assembly. This drive provides
a 36 to 1 ratio which means that one revolution of
the adjustment wheel will advance or retard the cam
setting by 10 degrees.
For most applications, therefore, no special cams
are necessary and settings may be changed at any
angular position of the camshaft.
• Lifetime Sealed Ball Bearing allows mounting in
any position.
• Large Cover Openings for ease of wiring.
• No Minimum Speed is specified because snap
action contacts are used. Maximum rated speed
of the Camshaft is 500 RPM and can be rotated
either clockwise or counterclockwise.
• Two types of compact integrally Mounted Gear
Reducers are available with ratios of 1:1 through
600:1. They can also be supplied with speed
multipliers up to 1:8.
Technical Data
• The maximum temperature with full electrical load
is 185°F. The minimum operating temperature is -
50°F minimum cam adjusting temperature is -10°F.
• Standard GEMCO Rotating Cam Limit Switches
have a rating of 50 pounds end thrust and 500
pounds radial load on standard shaft extensions.
• Torque Required - .6 lb. - In/Circuit.
• Repeatability +/- 1/4°
Snap Action Switches
All standard GEMCO Rotating Cam Limit Switches
employ SPDT precision type snap action switches
which provide the advantage of double-break
contacts and are actuated at a uniform rate to give
long life. DPDT switches can be provided upon
request. Any number of circuits from 1 to 40 may be
supplied as standard in Nema 1, Nema 4, Nema 7
and Nema 12 enclosures.
Each switch setting can be adjusted to your circuit
requirements. An unlimited selection of circuit
arrangements is available with the GEMCO Rotating
Cam Limit Switch, with no special mounting cams,
dogs, etc. for contact settings.
GEMCO Microadjust Cams Provide
Unlimited Circuit Versatility
1080 N. Crooks Road • Clawson, MI 48017-1097 USA • 800.635.0289 • 248.435.0700 • Fax: 248.435.8120 • www.AMETEKAPT.com