Bosch Rexroth LC40DB20E7X/ pressure-control logic cartridge insert

LC40DB20E7X/, manufacturer material number R900938012, is a Bosch Rexroth size 40 pressure-control logic cartridge insert. It is an individual insert for an ISO 7368 receiving cavity and requires a separately selected control cover. Its pressure-relief reference function limits pressure at A through a separately selected pilot and cover. Port B has no effective differential area in this pressure-function construction.

The construction is a poppet without an orifice. Spring code 20 identifies an approximate 2 bar opening pressure class; it does not specify the assembled system pressure setting. The seal code specifies NBR.

The original reference gives a 420 bar insert limit at A and B and a recommended 1000 L/min flow limit for this size and construction. These are component data, not a complete-valve rating. The selected cover, pilot, manifold and operating conditions determine the permissible assembly limits. Pressure-flow curves use HLP46 oil at 40 ± 5 °C; drain backpressure and pilot configuration affect the result.

Technical reference: manufacturer-authored RE21050 compiled edition 2003-02, containing retained earlier page revisions. The dated reference identifies applicable component design data and does not establish current stock or an individual assembly setting.

Representative manufacturer LCDB insert photograph; nominal size and internal form may differ. The separate cover shown elsewhere in the source is not included.