Standard gearboxes typically have two sets of gears: input and output. the input & the output. The enter gears are preset within the countershaft, generating them single units. It drives the person gears on the leading shaft, which rotate freely to the bearings. Spur and helical gears are Employed https://gearbox59135.blogocial.com/not-known-details-about-gearbox-69565066