4WRZE10E85-7X/6EG24N9TK31/A1D3V

The 4WRZE10E85-7X/6EG24N9TK31/A1D3V valve belongs to the WRZ Proportional Directional Valves series and is manufactured by Bosch Rexroth for electrically modulated hydraulic automation tasks. It accepts a supply voltage of 24 VDC so that the onboard amplifier can run directly from common control power rails. The valve responds to a ±10 V command value signal, which allows a standard analog controller to dictate spool position. A command value overlap of 15 % establishes a neutral zone that limits unintended flow when the input is near zero. The electronics draw 1.8 A during steady operation, defining the continuous load on the machine power supply. A power pulse current of 3 A is required during rapid spool shifts, giving the solenoid additional force at start-up. The maximum coil current is limited to 2.5 A to protect the winding from overheating. A solenoid resistance of 2 Ω at 20 °C fixes the relationship between drive voltage and magnetic force. An IP65 housing and a DIN EN 175201-804 electrical connector together shield the electronics from industrial dust and water jets while permitting quick installation.

The coil insulation supports a temperature up to 150 °C, allowing reliable service when ambient heat or continuous duty raises winding temperature. The hydraulic section tolerates 315 bar on the main ports, enabling the valve to control high-pressure circuits without external pressure reducers. A return pressure of 30 bar is permitted at port T, so backpressure in tank lines will not hinder pilot flow. The body mounts to manifolds machined to ISO 4401-05-05-0-94, ensuring interchangeability with standard subplates. During a step input the pilot stage draws 3.5 l/min, which determines sizing of the upstream supply orifices. The pilot cavity volume of 1.7 cm³ defines the response time when the spool moves through its full stroke. The assembly weighs 8.0 kg, a factor considered when sizing support brackets in mobile or stationary systems.