Does that mean "idle wheel"? He's just used to change the direction and does not contribute the gear ratio, for example, when turning on the lathe
Wheels that do not work have certain energy storage and are useful for stabilizing the system. The idler wheel is very popular in machinery. It helps to connect the shafts in the distance. There is a very important role: change the output direction
Also known as the bridge gear, the number of teeth on the transmission ratio does not affect the size of the numerical, but the final round of the steering will have an impact.
The inertia gear is two gears that do not contact each other, and the middle gear is used to transfer the gears, and it is also engaged with these two gears to change the direction of the rotation of the passive gear, so that it is the same as the driving gear. Its function is only to change the steering, and can not change the transmission ratio, called the inertia gear.
