MAAG GEAR Girth Gear Heavy-duty comminution requires heavy-duty equipment and our MAAG GEAR Girth Gears are up to the task. Manufactured using state-of-the-art processes and high-quality source materials, our line of girth gears is fit-for-purpose and for a lifetime ensuring long-lasting, high-performance for your mill or kiln. Our comprehensive expertise in forged gear ring technology comes from our more than 50 years of experience, as well as our collaborations with leading mill suppliers and technical universities. As a member of the American Gear Manufacturers Association (AGMA), we are actively involved in defining the standards for gear-rating calculations, service factors and other design standards. We continuously invest in technology and knowledge along with steadily strengthening our network of partners