In 1905, Jahns Regulatoren was registered in Offenbach as a factory specializing in the production of various motor regulators. Since 1928, Jahns Regulatoren has been a family-owned joint-stock company belonging to the Dapp/Sauerwein family. Since then, the company has produced axial piston pumps for presses and rowing machines, as well as water turbine regulators. In 1970, production began on slow-running radial piston engines. These were used to drive heavy machinery, forging manipulators, rubber spraying machines, and in-plant construction equipment. Subsequently, production shifted to CNC machine tools to buffer rising labor costs. Today, CNC machine tools are produced in small batches. In   1986, the company began acquiring commercial products in the field of hydraulic and drive technology. Product development is driven in collaboration with customers. It suffices to mention the procedures for power and quantifiers; today, it can be said that this process is nearly complete. Almost all renowned hydraulic experts belong to its global customer base. In 2000-5, Jahns took over the centrifugal pump, submersible pump, and agitator product lines from ABG in Karlsruhe. These products are mainly used in chemical and process engineering. The new product series features a broad vertical production range, ensuring additional capacity utilization for the company.