Description Overview Semiworsted ringspinning frame Brand: HDB Year: 1972 Type: MSB Specifications 150 spindles with spindle crown Pitch: 165 mm Ring diameter: 127 mm Tubes: 600 mm Variable speed: 1.500-4.500 TPM, for Nm 1-8 2-zones drafting system Zone 1: roller drafting Zone 2: double apron drafting Motor: 14-40 kW, 380 V / 50 Hz Features Optical sensor at each spindle and sliver stop by yarn break Feeding drum for feeding additional material, for example woolen roving