Speed Increasing Gearbox of 90m Finishing Mill/ Wire Rod Mill
Wire Rod Mill Speed-increasing Gearbox used carbon alloy steel forging blank, after roughing, workpiece needs to take ultrasonic flaw detection process to quench. In order to ensure the tooth surface with high hardness, tooth surface need to take carburizing and quenching treatment after semi-finishing. The fine grind of the tooth surface to ensure the high accuracy, after finishing the production of gear, the balance test is needed, the experienced speed is 1500r/min and the balance level is G2.5.
Speed increasing gearbox is composed of increasing gearbox body assembly, support base, big gear, transmission axis, matching gear shafts and lubrication system, etc.
Highest speed output ratio: 45/157=0.2866
Lowest speed output ratio: (60/157) x (55/60)=0.3503
Motor power: 4500KW
Motor speed: 800/1300r/min
High-speed output shaft speed: 4019r/min
Lowest speed output shaft speed: 3288r/min
Gear meshed speed: 77.2m/s
Gear backlash less than 0.36mm
Lubrication of bearing and gear using spray lubrication.
45° Top Cross Units Speed-Increasing Gearbox, the Differential Date Table
Number of teeth