Bosch Rexroth | 4WRLE27Q4-430M-3XG24K0A1M
4WRLE27Q4-430M-3X/G24K0/A1M
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The 4WRLE27Q4-430M-3X/G24K0/A1M proportional valve belongs to the 4WRL Solenoid Valves series from Bosch Rexroth and is used to meter flow and direction in hydraulic automation. A nominal size of 27 permits a large flow passage, and the unit reaches a rated flow of 430 l/min at a 5 bar pressure drop to support rapid cylinder or motor movement. The integrated electronics accept a ±10 V command signal so a controller can set spool position with an analog reference, while an input resistance of 100 kΩ minimizes load on the control card. Energizing the solenoid assembly requires a 24 V DC supply, and peak electrical demand stays within 40 VA, allowing compact power supplies. External fuse protection of 2.5 A is specified to disconnect the circuit during faults and protect wiring. An IP65 protection class resists dust ingress and low-pressure jets of water, ensuring reliable service on factory machinery exposed to fluids and debris.
The valve operates with hydraulic oil maintained at an ISO 4406 cleanliness class of 18/16/13 to prevent spool sticking and premature wear. A minimum pilot pressure of 10 bar is needed to shift the spool against spring and flow forces. Working lines P, A, and B can be pressurized to 350 bar for high-pressure actuation, while the pilot port X is limited to 280 bar and the tank ports T and Y withstand up to 250 bar; these limits define circuit design and safety margins. The solenoid surface may reach 120 °C, so mounting must provide adequate air circulation and cable insulation. NBR seals are fitted, offering dependable elasticity in common hydraulic fluids. A mass of 21 kg requires secure manifold bolts or sub-plate mounting to support the assembly without vibration.
Technical Specifications
Cleanliness Class (iso 4406)
18/16/13
Command Input (a1)
±10 V
Fuse Protection (external)
2.5 A
Input Resistance (a1)
100 kΩ
Max Power Consumption
40 VA
Max Pressure (port X)
280 bar
Max Pressure (ports P, A, B)
350 bar
Max Pressure (ports T, Y)
250 bar
Max Solenoid Surface Temp
120 °C
Minimum Pilot Pressure
10 bar
Nominal Size (ng)
27
Protection Class
IP65
Rated Flow (Δp = 5 Bar)
430 l/min
Seal Material
NBR
Supply Voltage (obe)
24 VDC
Weight
21 kg
1620 Old Apex Road
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