Mechanical hafainganam-pandeha-variator Ny milina fiovana hafainganam-pandeha miolakolaka mekanika Parallel Shaft Helical reducer Solid Shaft Gear-boaty Reductor Helical-worm Reduction-Box Bevel Helical Gearboxes fitaovam-piadiana havanana kankana havanana Cycloidal Gear