Rexroth’s two new counterbalance valves that are directly mounted on Rexroth axial piston motors will increase its efficiency while lowering loads and stabilizing the speed of rotary head drives.
Counterbalance valves reduce the risks of overspeed and cavitation for axial piston motors in open circuits. The single and double-acting counterbalance valves limit the return flow of the hydraulic fluid until the rotational speed and the given inlet flow match again. Quick-closing spools ensure this function, even during sudden pressure drops. The integrated boost check valves help to prevent cavitation in transition periods.
The control cover allows for variable damping buildup and simplifies adjustment to each application. This reduces commissioning costs and on-site setting time.
The BVE and BVD counterbalance valves in sizes 25 and 32 are designed for 350 bar nominal pressure and a maximum pressure of 400 or 420 bar at a maximum flow of up to 650 l/min. Reduced pressure drop rates increase efficiency and improve the energy efficiency of winch and rotary head drives.
The drive and control technology from Bosch Rexroth can be used in machines and systems of any size.
