workshop double girder 20 ton overhead crane

High technique, torsionfree box girders, no welding one 

whole type, 

strong and beautiful

Motor:

Frequent starting , reversing & braking, dust proof 

construction foot / flange mounted TESC / TEFC , 

Sq. cage motors with integrated safety brakes, 

insulation class FH, IP54 protection for hoisting, 

CT & LT motions. Squirrel Cage Induction Crane duty 

motors of reputed make (Motors may be used preferably 

of JIAMUSI/WUXIHONGDA make), CDF25%, Totally 

enclosed, fan cooled,Insulation ClassF & confirming to

relevant latest GB/T 1032-2005.

Reducer: 

The reducer selects of steel factory crane special reducer,

the reducer adopts welding casing, the performance is better than Hardened reducer, is of special design and manufacture of casting crane. The reducer gear ratio is reasonable, withhigh strength low carbon alloy steel; carburizing quenching gear grinding, gear tooth surface hardness, high precision,the machine has the advantages of compact structure,advantages of high bearing capability, long service life etc.

Independent Hydraulic Brake Conical rotor type or 

"Fail to safe" action type Electrohydraulic drum / disc 

brakes type to be provided to hold the mechanism in 

position instantaneously as soon as the power supply is

 'OFF' either accidentally or intentionally for all motions.

Wheel:

The steel factory crane wheel group accord with the

national standard of “GB44628 cylindrical wheels of

bridge crane”, the wheel adopts double edge structure

and the material is adopts alloy steel and spring steel forgings

Wire rope:

Steel factory crane special wire rope are all specific femoral facial contact wire rope, long service life, less internal friction,lubrication good, suitable for high temperature casting crane and various crane. Steel wire rope with each other about twist, line contact high quality steel wire rope. Safety coefficient is in strict accordance with the "casting crane design standard"implementation.