CYJ - Bull Gear Press-Mounting Machine is a special equipment designed for the compaction of split type gearboxes and gear around accessories of the railway vehicles, subways, and light rail wheelsets as well as the assembly of driven gears and bull gears. The vertical side pull plate gantry frame structure design layout has the advantages of high strength, stable and accurate equipment operation, easy operation, safety and reliability, convenient for material loading and unloading, and small on-site floor space, which is convenient for operators to observe and operate.