Logic Valves Can be Used to Produce Unlimited Variety of Functions
With its new, actively controllable 2/2 directional cartridge valve LC2A-1X, Rexroth opens up a virtually unlimited variety of functions in hydraulics using highly available standard parts. The new hydraulic valve series comes in 7 sizes ranging from 16 to 100. As the overall functionality is built from individual standard parts, engineering and assembly costs can be reduced. Likewise, circuit modifications and repairs also become less costly.
The new Rexroth valve series with standardized cavities according to ISO 7368 carries the principle of modular design over to hydraulics. Users can directly mount almost any LFA logic cover in the Rexroth standard program, which in turn allows them to create any hydraulic function imaginable. This approach increases the flexibility for later modifications, as only the logic cover needs to be replaced in order to adapt the functionality to new requirements.
The LC2A-1X series is based on proven Rexroth design principles, but incorporates numerous improvements in specific details. For instance, type tested versions with closed switch position monitoring are now available across the entire range. Alternatively, a variant monitoring the open switch position is also feasible. All sizes can easily be retrofitted on site with a Q7- type adjustment-free position switch.
The variable assignment of the pilot oil channels to the active area opens up new levels of freedom. The new LC2A-1X valve series allows engineers to set different functional priorities, including a direct replacement of existing standard logics if a user wants to add position monitoring or prevent internal leaks. New additional piston models allow, among other things, for highly dynamic check-valve functions or analog position sensing.
In sizes 80 and 100, the hydraulic flow parameters were again optimized through design modifications. In combination with the shaft seal, hydraulic losses are thus further reduced, which in turn contributes to better energy efficiency.