Conventional gearboxes usually have two sets of gears: enter and output. the input & the output. The enter gears are fastened on the countershaft, making them solitary units. It drives the person gears on the leading shaft, which rotate freely around the bearings. Spur and helical gears are used https://gearbox69000.humor-blog.com/32754010/not-known-details-about-gearbox