Our driven gears typically range from 3 to ¾ Diametral Pitch (DP) and can be internal or external. Manufactured from steel plate or forgings, Cogmatic’s large driven gears can be flame machined up to 18 feet in diameter. Based on your application needs, these driven gears can be induction hardened, through hardened or both. The rock crushing or concrete mixing lifetime of your product is assured to improve.

Large, heavy duty driven gears are typically used for crushing, grinding, mixing, blending or moving materials.


  • Aggregate equipment
  • Asphalt equipment
  • Concrete Mixing equipment
  • Motor Graders
  • Rock Crushing equipment
  • Turn Tables

large gears with up to 6 inch face width