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V-belt reference length
Aug 28, 2018

When the V-belt is bent around the pulley, the layer whose length and width remain unchanged is called the neutral layer. Under the specified tension, the circumference measured along the neutral zone of the V-belt is called the reference length Ld, also known as the nominal length. It is mainly used for geometric calculation of belt drives and marking of V-belts, the length of which has been standardized. In addition, the length of the domestic V-belt is also expressed by the inner circumference and the outer circumference.


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