Conventional gearboxes usually have two sets of gears: input and output. the input & the output. The input gears are mounted within the countershaft, making them single units. It drives the person gears on the primary shaft, which rotate freely within the bearings. Spur and helical gears are Employed https://gearbox86307.pointblog.net/the-ultimate-guide-to-gearbox-77384958