An "idler" is typically used for tensioning of a belt, as in the timing belt, or a chain.
Roller Shutter Doors
Any type of trans in neutral
all i know is it can be used in a transmission goodbye
Most rear wheel drive Pick up trucks with manual transmission have an idler to provide reverse.
No. But if there are two idler gears, one smaller than the other, say a 12 tooth and a 6 tooth. the 12 tooth idler is the idler of the driver gear which has 24 teeth, making the idler gear rotate 2 times for every rotation that the driver gear rotates. Now, if the 12 tooth idler gear is rotating 2 times faster than the driver gear, then the 6 tooth idler gear will rotate 2 times faster than the 12 tooth idler gear. So, the 6 tooth idler gear is rotating 4 times faster than the driver gear. Let's say that the driven gear has 12 teeth. For every rotation of the 6 toothed idler gear, the driven gear rotates halfway.
A simple gear train with idler is a gear train the contains 3 gears. These gears are called the driver, idler, and driven or follower. The idler merely changes the direction of the follower so that it is the same as the driver.
An idler gear is a gear which connects two other gears so they will turn in the same direction. :)
from one side to the other
reverse
follower gear means the gear after the idler gear
follower gear means the gear after the idler gear
idler-GEAR