zelus.ca

Website:https://www.zelus.ca
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Definitions (88)

1

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auxiliary girder


A girder arranged parallel to the main girder for supporting the platform, motor base, operator's cab, control panels, etc., to reduce the torsional forces such loads would otherwise impose on the main girder.
Source: zelus.ca

2

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bridge rail


The rail supported by the bridge girders on which the trolley travels.
Source: zelus.ca

3

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electrical braking system


A method of controlling crane motor speed when in an overhauling condition, without the use of friction braking.
Source: zelus.ca

4

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mean effective load


A load used in durability calculations accounting for both maximum and minimum loads.
Source: zelus.ca

5

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overhead crane & component terminology abnormal operating conditions


Environmental conditions that are unfavorable, harmful or detrimental to or for the operation of a hoist; such as excessively high (over 100ºF) or low (below 0ºF) ambient temperatures, corrosive fumes, dust or moisture laden atmospheres and hazardous locations.
Source: zelus.ca

6

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adjustable or variable voltage


A method of control by which the motor supply voltage can be adjusted.
Source: zelus.ca

7

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automatic crane


A crane which when activated operates through a preset cycle(s).
Source: zelus.ca

8

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auxiliary hoist


A supplemental hoisting unit, usually designed to handle lighter loads at a higher speed than the main hoist.
Source: zelus.ca

9

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bearing life expectancy


The L-10 life of anti-friction bearing is the minimum expected life, hours, of 90% of a group of bearings which are operating at a given speed and loading. The average expected life of the bearings is approximately five times the L-10 life.
Source: zelus.ca

10

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bhn


Brinell Hardness Number, measurement of material hardness.
Source: zelus.ca


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