Rotor Design and Speed Optimisation
topic
Rotor geometry parameters including rotor diameter from 28 to 56 millimetres, groove profile angle, and navel insert geometry interact with rotor speed from 60,000 to 170,000 rpm to determine the yarn twist level, strength, and structure, with smaller diameter rotors enabling higher speeds for finer counts while larger rotors at lower speeds produce the high twist coarse yarns required for denim and heavy weaving applications.
Role
Defines the fundamental yarn structural parameters achievable at each rotor speed and diameter combination, with rotor design optimisation for each yarn count and application balancing the higher productivity of maximum rotor speed against the yarn quality limitations of excessive rotor speed that reduces fibre transfer uniformity and increases yarn hairiness and unevenness.
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