To counter this friction, bearings are utilized within the shafts. It decreases the friction by rolling motion, which decreases the intake of Power. Equally the counter and key shafts perform with the support from the bearing. Examples of these types of transmissions are Employed in helicopters and wind turbines. https://gearbox59135.laowaiblog.com/32802368/how-gearbox-can-save-you-time-stress-and-money