Gear Box -
Precision spur gears are made of high
quality steel and are machined from solid blanks. Hardened gears and the use of lubricants
reduce wear to a minimum. The gears are enclosed in a cast iron housing and precision ball
or roller bearings are used at all points of support.
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Wire Rope -
The wire rope is made of high quality
improved plough steel with pre-formed strands. Large drum to wire rope and sheave
to wire rope ratios assure long cable life.
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Motor -
The 3-phase squirrel cage induction motor
used in the Electromech Engineers hoist is of the conical type. It
is insulated in class F and specially designed for crane and hoist duty with standing and
stalling torques of approximately 220% and 290% respectively.
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Rope Drum -
The rope drum is rolled, welded and precision
machined from high grade steel. It is driven by the gearbox through an internal gear rim
and supported by large diameter roller bearings. Machined rope grooves and ample drum
diameter ensure the best possible working conditions for the rope.
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Main Housing -
All parts of the hoist unit are enclosed in
the main housing thus forming an integral unit. The main housing is of welded steel
construction equipped with mounting brackets for various types of mounting.
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Rope Guide -
A rope guide with built in rope tightener is
delivered as a standard item to ensure correct winding of the wire rope under all
conditions.
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Brakes and Brake Adjustment -
Motors of the conical rotor type have an
axial movement of the rotor which is used to activate the brake. This is the most simple
and reliable system available. The brake is automatically applied when the power is off.
This provides a fail-safe system and eliminates solenoids, adjustable air-gaps, and other
similar headaches.
Electromech Engineers'
conical brakes are designed to withstand 200% of full load motor torque.
In addition the unique brake adjustment
feature on Electromech Engineers hoist greatly reduces down time and
maintenance. The brake adjustment is made simply by removing the same number of shims from
each of the bolts holding the brake end cover.
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| Additional Features Micro-Speed -
The Electromech Engineers Micro
Speed unit cuts normal lifting speed to about one tenth. This feature can be
invaluable in handling heavy or delicate loads. Once installed, the Micro Speed
unit becomes an integral part of the motor although it operates independent of the normal
lifting speed. The micro speed remains constant regardless of the load. This valuable
optional feature is available on all Electromech Engineers' hoists.
Limit Switches -
A Limit Switch with adjustable stops
for top and bottom position of the hook is incorporated as a standard feature of each and
every hoist. This switch is activated by the rope guide.
Wiring -
All electrical wires are totally enclosed and
confirm to international electrical codes.
Bearings -
Anti-friction, precision ball or roller
bearings support both ends of the shaft.
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