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Crane Glossary
a b c d e f g h i j k l m n o p q r s t u v w x y z
EDDY-CURRENT BRAKING:
A method of control by which the motor drives through an electrical induction load brake.
EFFICIENCY OF GEARING AND SHEAVES:
The percentage of force transmitted through these components that is not lost to friction.
ELECTRIC OVERHEAD TRAVELING CRANE:
An electrically operated machine for lifting, lowering and transporting loads, consisting of a movable bridge carrying a fixed or movable hoisting mechanism and traveling on an overhead runway structure.
ELECTRICAL BRAKING SYSTEM:
A method of controlling crane motor speed when in an overhauling condition, without the use of friction braking.
ENCLOSED CONDUCTOR(S):
A conductor or group of conductors substantially enclosed to prevent accidental contact.
ENCLOSURE:
A housing to contain electrical components, usually specified by a NEMA or CSA classification number.
END APPROACH:
The minimum horizontal distance, parallel to the runway, between the outermost extremities of the crane and the centerline of the hook.
END TIE:
A structural member other than the end truck which connects the ends of the girders to maintain the squareness of the bridge.
END TRUCK:
The unit consisting of truck frame, wheels, bearings, axles, etc., which supports the bridge girders.
ENDSTOP:
A device to limit travel of a trolley or crane bridge. This device normally is attached to a fixed structure and normally does not have energy absorbing ability.
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