A head drive for a rotary drum device comprising a plurality of yokes made of magnetic material and magnets housed in the yokes for forming a plurality of magnetic fluxes. A bobbin, comprising a first material surrounds the magnets and has a coil formed on the bobbin. The coil is covered with a second material. At least one circular, non-magnetic leaf spring having an inner periphery and an outer periphery and supported at the outer periphery or the inner periphery by at least one of the yokes and the magnetic means supports the coil. Fixing members, comprising a third material are positioned at the inner periphery of the leaf spring. This third material is positively dissolved and welded to at least one of the first material and the second material with a bonding solvent whereby the leaf spring supports the coil. A prolongation at a portion of the outer periphery of the leaf spring can support a magnetic head.