GT2 Idler Timing Pulley This product is an idler GT2 timing pulley with a shaft diameter of 5 millimeters. This product is made of aluminum alloy. Gates Tooth pulleys, abbreviated as GT2, are part of a series of metric belts with semi-circular teeth that do not require lubrication, allowing them to operate dry and making maintenance easier. Pulleys and belts are replacements for gears and chains, which have provided many technical advantages in power transmission. A pulley is a cylindrical metal piece with teeth on its surface, and with the rotation of the pulley, the teeth on the pulley’s surface advance the teeth of the timing belt forward, causing the belt to move.
