The weftless bead has a simple uncomplicated construction process, consisting of two or more wires held together in a ribbon of insulated rubber compound. These wires are pre-cast into a desired bead diameter, wound a pre-selected number of times around a fixed diameter former, cut and ejected. Our machines are designed to implement individual customer needs, ensuring continuous production of high quality weftless beads.
The Bartell TDS-860 Bead Line is an automatic bead winding machine designed to produce 10” (250mm) through 25” (635mm) passenger and light truck tire beads. The flat, weftless, insulated ribbon can contain anywhere from two (2) to twenty-four (24) single strands of bead wire with a maximum insulated ribbon width of 1.25” (32mm). The number of revolutions for a single bead profile can be adjusted from two (2) to twenty (20) turns and the machine has a maximum line speed of 500 ft/min (152.4 m/min), depending upon the size of the former fitted, operator skills, and the adhesion properties of the wire compound used.