پولی هرزگرد بدون دندانه GT2 با شفت 5 میلی متر مخصوص پرینتر سه بعدی - بسته 2 عددی

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The GT2 series of belts and pulleys are designed specifically for linear motion. They use a rounded tooth profile that guarantees that the belt tooth fits smoothly and accurately in the pulley groove, so when you reverse the pulley direction, there is no room for the belt to move in the groove.
In a belt drive system, idlers are often used to alter the path of the belt, where a direct path would be impractical.
Idler pulleys are also often used to press against the back of a pulley in order to increase the wrap angle (and thus contact area) of a belt against the working pulleys, increasing the force-transfer capacity.
Belt drive systems commonly incorporate one movable pulley which is spring or gravity-loaded to act as a belt tensioner, to accommodate stretching of the belt due to temperature or wear. An idler wheel is usually used for this purpose, in order to avoid having to move the power-transfer shafts.
Driver pulleys can be fastened to a shaft or bar as opposed to driver pulleys which have a bearing allowing them to rotate freely. Most driver pulleys can be fastened using two set screws, resulting in a reliable setup. For guiding the belt, we offer two types of driven pulleys: with and without teeth (smooth). Driven pulleys allow you to guide the teeth side of the belt without vibrations that would have been caused by running them over a smooth surface.
Idler pulleys are used to take up the slack, change the direction of transmission, or provide clutching action. Idler pulleys are rollers that do not produce any mechanical advantage, nor transmit power to a shaft. Idler pulleys are used to lead a chain around a bend or to take up slack in a drive chain.