Speed increasing box of 135 m finishing mill group

Large main motor drives two output shafts which drived by rack wheel on the speed increasing gear box,associated by gear-type coupling and two drive shaft, respectively, driving the racks of right and left sides, by variable speed of the speed increasing gearbox to achieve the rolling desired speed.



Equipment main technical performance

High speed output ratio 42/167=0.251497

Low speed output ratio 52/167=0.311377

Motor power 4800KW

Motor speed 750/1100r/min

Motor working speed 1007r/min

High speed output shaft revolving speed 4004r/min

Low speed output shaft revolving speed 3234r/min

The gear clearance is less than 0.36mm.

Bearing and gear adopt spray lubrication.