0811404818 4WRPE10CB80M-2X/G24K0/A1M-846 Proportional hydraulic valve from Rexroth, Germany

FAQ:

1. Spool Characteristic (B80M)

   The B-spool​ has positive overlap​ (underlap), which provides good centering and dirt tolerance, making it suitable for general industrial applications. The "80M" indicates an 80 L/min rated flow​ with a medium (M) flow characteristic​ (progressive or linear).

2. Integrated Electronics (OBE)

   This valve has on-board electronics (OBE), meaning the amplifier is built into the valve coil housing. It accepts a ±10 V DC (A1)​ command signal directly and uses LVDT feedback for internal spool position control, eliminating the need for an external amplifier box.

3. Electrical Connection (K0)

   The /K0​ suffix indicates that the valve is supplied with a plug socket (female)​ but no attached cable or plug. You must procure a separate mating plug (e.g., per DIN 43563 or EN 175201-804) to connect the power and signal wires.

4. Fail-Safe Behavior

   This is a double-solenoid, spring-centered​ valve. In the event of power loss or signal failure, the internal springs return the spool to the central (neutral) position​ (typically all ports blocked, depending on the spool symbol).

5. Critical Installation Notes

   • Plug Requirement:​ Unlike valves with pre-attached cables, the /K0 version requires you to wire a separate plug. Ensure correct pin assignment for +24V, 0V, and ±10V signal.

   • Mounting:​ Use the correct ISO 4401-05 (NG10) subplate to ensure proper port alignment and sealing.

   • Cleanliness:​ Maintain oil cleanliness (recommended ISO 4406 19/17/14 or better) to protect the sensitive proportional spool.