Design and industrial validation of an asymmetric elastic bearing for vibration control in cotton gin saw cylinders

Saw gin cylinders operate under stochastic impact loading from seed-cotton interactions, causing excessive vibration and rapid bearing wear. This study evaluates a load-adaptive asymmetric elastic bearing for vibration reduction. Comparative industrial experiments in Namangan (Uzbekistan) tested three configurations: rigid support, symmetric elastic support, and proposed asymmetric elastic support (0.75/1.00 mm). Vibration velocity, shaft deflection, bearing life, and fiber quality parameters were measured with statistical validation ( n = 5, t-test, α = 0.05). The asymmetric configuration reduced vibration velocity from 12.4±1.2 to 4.1±0.6 mm/s and increased bearing life by 4.3 times. Mechanical seed damage decreased by 16 %, impurities by 8.8 %, and fiber yield increased by 1.2 %. The proposed design provides an effective vibration-control solution for cotton ginning machinery.

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