overhead crane classification, gantry crane classification

 Crane classifications of various types of cranes for you to pick up right overhead crane and gantry crane for your application. Overhead crane duty classification and gantry crane classification are presented for you. Please check now.

Crane classification

Crane classification is determined by two kinds of ability; first is the frequency of the use of a crane, called the crane use level; second is the crane load bearing, referred to as the crane load condition.

1.Crane use level
Crane has certain work cycles during the useful life time. crane operation work cycle is the whole operation process starts from the preparing of lifting items, until the next lifting. Total work cycles show crane utilization degree, it is one of the basic parameters of crane level classification. Crane total work cycle is the sum of crane working cycles during the service life.
When determine the appropriate crane service life, it need to consider the economic, technical and environmental factors, and also need involve the influence of equipment aging.
Total number of work cycle is associated with the use frequency of crane. For convenience, the total number of work cycle in the possible range, divided into 10 use levels (U0 to U9), shown in the following table.

Crane Use LevelTotal number of work cycleRemarks
U0
U1
U2
U3		1.6×104
3.2×104
6.3×104
1.25×105		Do not often use
U42.5×105Often use at light level
U55×105Often use at medium level
U61×106Not often use at heavy level(frequently)
U7
U8
U9		2×106
4×106
>4×106		Frequently use



2.Crane load condition
Load state is another basic parameter of crane level classification, it shows that the main mechanism of crane - the weight of crane lifting mechanism under load.
Crane load condition
Q1 - Light - rarely hoisting rated load, generally hoisting light load
Q2 - Medium - sometimes hoisting rated load, generally lifting medium load
Q3 - Heavy - often hoisting rated load, generally lifting heavier load
Q4 – Extra heavy – frequently lifting rated load

3. Crane classification
Crane classification is also called crane level classification which is determined by crane using level and load condition, crane work level with the symbol of A, its working level are divided into 8 grades, namely A1 ~ A8. 

Types of Cranes classification

For the convenience of the crane user understand and grasp the crane hoisting industry applicable classification, the following lists the various level of crane work:

Crane typeclassification
Overhead CraneHook typePower station installation and maintenanceA1-A3
Garage and warehouseA3-A5
Workshop and warehouse heavy work useA6、A7
Grab TypeDiscontinuously loading and unloadingA6
Continuous loading and unloadingA6-A8
Metallurgy specializedHandling charging boxA7、A8
ChargingA8
FoundryA6-A8
ForgingA7、A8
QuenchingA7、A8
Pliers, and StrippingA8
Lid-take-offA7、A8
Material rake typeA8
Electromagnet typeA6-A8
Gantry CraneGeneral use hook typeA3-A6
Loading and unloading grab typeA6-A8
Power station hook typeA2、A3
Shipbuilding installation hook typeA3-A5
Loading and unloading containersA5-A8
Loading and unloading craneStock yard loading and unloading grab typeA7、A8
Port loading and unloading grab typeA8
Port loading and unloading containersA6-A8
Portal caneInstallation hook typeA3-A5
Loading and unloading hook typeA5-A7
Loading and unloading grab typeA6-A8
Tower CraneGeneral construction installationA2-A4
hanging cage loading and unloading concrete/betonA4-A6
Truck crane, rubber-tyred, crawler belt, railway cranesInstallation and handling hook typeA1-A4
Installation and handling grab typeA4-A6
Deck craneHook typeA4-A6
Grab or magnetic chuck typeA6、A7
Derrick craneInstallation and handling hook typeA5、A6
Installation and handling grab typeA6、A7
Shipbuilding installationA3-A6
Cable craneInstallation and handling hook typeA3-A5
Handling or construction hook typeA5-A7
Handling or construction grab typeA6-A8

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