The new Brembo's Electromechanical Actuator (EDIH)


 Brembo’s electromechanical actuator is the perfect parking brake for commercial vehicles up to 8 tonnes

​From 20 to 27 September, Brembo will be exhibiting the Electric Drum in Hat (EDIH) on its stand at the 67th IAA Commercial Vehicles exhibition, the important German trade show for commercial vehicles.


The Electric Drum in Hat is a “two-servo” brake with a specific electromechanical actuator designed to guarantee parking of commercial vehicles weighing up to 8 tonnes.


Patented by Brembo, the electromechanical actuator is a flagship achievement of the company’s research, development and testing of commercial vehicle braking systems. These systems are the result of continuous investment in research and development – amounting to 5% of company turnover – which leads to finding new mobility solutions for the future.​



​The integration of the vehicle electronic stability control system (ESC) guarantees the same functionalities as the ECS brake caliper. In fact, thanks to this technology, assistance is available for uphill starts and vehicle slip prevention, as well as manual/automatic parking brake release.


The system ensures safe parking even when the brake discs are hot. It can also be used as an emergency brake.


Brembo paid particular attention to the design of the electro-mechanical actuator in order to compensate the loss in EDIH lever load typical of duo-servo drum brakes. Another important feature is the total absence of drag in all conditions. This is possible through the monitoring of the EDIH lever position during release.​


​Further advantages of the Brembo EDIH are the possibility to release the parking brake manually in case of failure, and the capability to park the vehicle on a certain slope in case of failure of one of the two actuators.​