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In scientific work ways of increase of reliability and durability of the mechanism of a needle from elastic communication, in sewing-machines, for the purpose of maintenance of reliable and durable work of the mechanism of a needle, dynamic loadings in support of links are considered, hardenings of a working surface of a needle and details, a choice of a material of needles, and also modes of hardenings and technological schemes processing by a laser beam are recommended laser.On the basis of teoretiko-experimental researches ways increase of service life of a needle to20 are foundand is reached productivity of sewing-machines 2254 coupler/minute.