Heavy Duty Doubling Frames are equipped with aluminium plug type spindle and cotton spindle, which are further provided with proven SKF HZ inserts for doubling, tyre cord twisting and draw twisting of the yarns. Doubling Frames ensure optimum performance of the machines with the help of dynamically balanced spindles. The Doubling Frames are most suitable for heavy duty applications. Heavy Duty Doubling Frames can also be availed with special spindles for jute spinning and jute twisting on specific requirement.