Brief introduction of idler

A Idler gear refers to a gear that transmits between two transmission gears that are not in contact with each other, and meshes with these two gears at the same time to change the rotation direction of the driven gear to make it the same as the driving gear. Its role is only to change the steering and not to change the gear ratio, called the idler. The main functions of the idler are to change the steering of the driven wheel, increase the transmission distance, and adjust the pressure angle. The idler gear is a part of the gear train that plays a transitional role and will not change the transmission relationship. It is to make the force of the gear train more reasonable or to meet the layout of the entire transmission system. Its function is only to change the steering, not the transmission ratio. The wheelbase can be extended through the idler gear. The number of teeth has no effect on the value of the transmission ratio, but it will affect the steering of the final wheel. It is a wheel that does not work, and has a certain energy storage function, which is helpful to the stability of the system. Idler pulleys are very common in machinery to help connect shafts at a distance.