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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
CAB-OPERATED CRANE:
A crane controlled by an operator in a cab located on the bridge or trolley.
CAMBER:
The slight upward vertical curve given to girders to compensate partially for deflection due to hook load and dead weight of the crane.
CAPACITY:
The maximum rated load which a crane is designed to handle.
CLEARANCE:
Minimum distance from the extremity of a crane to the nearest obstruction.
CMAA:
Crane Manufacturers Association of America.
CSA:
Canadian Standards Association. Crane, as an entire assembly, must be CSA certified.
CSA "NRTL/C":
Indicator appearing adjacent to the CSA mark signifies that the industrial control equipment meets U.S. standards.
COLLECTORS:
Contacting devices for collecting current from the runway or bridge conductors. The mainline collectors are mounted on the bridge to transmit current from the runway conductors, and the trolley collectors are mounted on the trolley to transmit current from the bridge conductors.
CONTACTOR, MAGNETIC:
An electro-magnetic device for opening and closing an electric power circuit.
CONTROLLER:
A device for regulating in a predetermined way the power delivered to the motor or other equipment.
COUNTER-TORQUE:
A method of control by which the motor is reversed to develop power to the opposite direction.
CROSS SHAFT:
The shaft extending across the bridge used to transmit torque from motor to bridge drive wheels.
CUSHIONED START:
An electrical or mechanical method for reducing the rate of acceleration of a travel motion.
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