The way to “high tensile” success. Keller know-how has been moving the iron and steel industry for over a hundred years. Our gear units are in use all over the world. Our wide range of products covers gear units up to 200 tons. Among other things, we produce pinion stand gearboxes, coiler gears, scissor drives, leveler gearboxes, draw bench drives and sendzimir gear units with single or double helical gearing and gearing components according to individual specifications, such as tempered and case hardened pinion gears weighing up to 40 tons.