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The maximum mechanical speed is 1600rpm; HY490 is developed under our long experience in the field of spinning. - details see: https://www.machineto.com/drawing-frame-textile-machinery-made-in-china-10277508

High-level electromechanical integration:
Eliminate conventional cone drum mechanism,reversing and building mechanism,and adopt two motors to drive separately. Apply modern drive and control technology to form the high-accuracy follow control system that realize synchronous control between motors, and spin with optimum roving tension.

Superior quality roving:
4 - roller with double short aprons is adopted.Separating the collection zone (between the first and the second roller) from the main draft zone (between the second and the third roller) can shorten the non-twisting zone,which is in favor of evenness of twist and high quality of roving.
In the whole course of roving, the control system of real-time measure and feedback, which is composed of several high-accuracy rotary encoders and computer, controls the roving tension strictly according to the mathematics model.