V belt is the rubber belt that drives things such as the alternator air conditioning compressor power steering pump and waterpump. Measure the diameters of the small pulley denoted by d1 and the large pulley d2.

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### To calculate for spiral length the formula is l pin d d 2.

**Belt length calculation formula**. The below mathematical formula is used in mechanical engineering to calculate the v or flat belt length required to connect two pulleys for mechanical power transmission. This is wherein n d d 2t is the number of wraps oftape of thickness t on a roll of diameter d when full around. How to calculate belt length.

So if you know the distance between the center points of the pulleys and their diameters you can calculate the length of belt you need using this formula. L length inches c center distance inches d1 pitch diameter of small pulley inches d2 pitch diameter of large pulley inches when determining the length of a serrated type belt both equations are to be divided by the belt serration pitch. If the centre distance c is known belt length or pitch length can be determined as follows.

The belt also tends to wedge into the groove as the load increases. The v shape of the belt tracks in a mating groove in the pulley or sheave so that the belt cannot slip off. Belt length is determined in a datum or effective system.

For this reason the datum or effective diameters are determined first for each pulley. The sliding pulley position is adjusted to accomplish standard belt length criteria. The calculation uses iteration solution to find appropriate sliding pulley position what is closest to.

Have you ever been out in the field or to a customers site only to discover a broken belt. Using the formula l 2c d2 d12 d2 d124c calculate length of the v belt where l denotes the length. The belt trajectory is based on individual pulley position.

Besides the step by step calculation for each calculation performed by using this belt length calculator let the users to know how to perform such calculations manually. The serrated belt length should be designed for whole or even number of serrations. Broken belt unkown length.

Measure the distance between the centers of the two pulleys. This is denoted by c in the formula. Belt length calculator distance between pulleys calculator see all online calculators.

Just put the information into the calculator below for a quick result.

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