4WRZE10W6-85-7X/6EG24N9TK31/A1D3V

The 4WRZE10W6-85-7X/6EG24N9TK31/A1D3V valve is manufactured by Bosch Rexroth as part of the WRZ Proportional Directional Valves series. It modulates hydraulic flow in closed-loop automation by varying spool position in response to an electronic reference. A valve size of 10 establishes the NG10 mounting pattern and permits a nominal flow of 85 l/min at a 10 bar pressure drop, supporting medium-capacity actuator circuits. Maximum operating pressure is limited to 315 bar, so piping and pumps must be rated accordingly. The integrated electronics accept a ±10 V command signal, while the circuitry is powered from a 24 V DC supply; together these parameters allow direct interface with common motion controllers. During operation the on-board electronics draw 1.8 A, which helps users size power supplies correctly. Protection class IP65 shields the enclosure against dust and low-pressure water jets when the DIN EN 175201-804 electrical connector is properly fitted. A pilot valve in size 6 is included to shift the main spool with minimal pilot flow demand.

To maintain precise positioning, the hydraulic hysteresis does not exceed 6 %, which limits deviation between input signal and spool displacement during control tasks. A pressure reducing valve identified as ZDR 6 DP0-4X/40YM-W80 stabilizes the pilot stage pressure so that downstream movements remain consistent under supply fluctuations. The pilot oil can be supplied externally or drained internally, giving designers flexibility when configuring manifold passages. Coil insulation tolerates temperatures up to 150 °C, preventing thermal damage during extended duty cycles. Fluid entering the unit must meet ISO 4406 cleanliness class 20/18/15 to protect the metering edges from wear and to preserve the specified performance. FKM seals are installed to resist common mineral oils and elevated temperatures encountered in production machinery. The complete assembly weighs 8.0 kg, a factor to consider when selecting mounting hardware and planning service procedures.