Bosch Rexroth | FESX-50-CA-1X980LZ4M
FESX 50 CA-1X/980LZ4M
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The FESX 50 CA-1X/980LZ4M throttle valve belongs to the FES Throttle Valves series and is manufactured by Bosch Rexroth for hydraulic automation where controlled metering between ports is required. Its nominal size of 50 establishes a large flow section, while a nominal flow rate of 980 l/min at 5 bar per edge confirms calibrated throttling accuracy. A maximum flow capability of 3000 l/min accommodates short-term peak demand without excessive pressure loss. The valve withstands 315 bar on ports a, b, and x, and it is limited to 100 bar on port y to protect the tank return line. Minimum supply pressures of 12 bar from A to B and 20 bar from B to A ensure reliable spool movement in either direction. Operation is permitted with fluid temperatures from −20 to +80 °C, and an IP65 housing guards the solenoid assembly against dust ingress and water jets. A mass of 9.7 kg affects support structure sizing during manifold installation.
A coil resistance of 2.5 Ω at 20 °C sets the electrical load, leading to a maximum solenoid current of 2.7 A for full actuation under rated voltage. The pilot valve requires 28 l/min at 5 bar to shift the main spool quickly, maintaining response consistency in large flow circuits. Internal leakage from X to Y remains below 400 cm3/min at 100 bar, limiting energy loss and heat generation when the valve is closed. Electrical termination is made through a DIN 43650/ISO 4400 connector with an M16 × 1.5 thread, providing compatibility with standard cable glands and simplifying field service. These electrical, hydraulic, and leakage parameters work together to deliver precise flow control and dependable performance in high-pressure hydraulic systems.
Technical Specifications
Coil Resistance (20 b0c)
2.5 ohm
Degree Of Protection
IP65
Fluid Temperature Range
-20 to +80 b0C
Leakage X→y At 100 Bar
<400 cm3/min
Max Solenoid Current
2.7 A
Max Working Pressure (a,b,x)
315 bar
Max Working Pressure (y)
100 bar
Maximum Flow
3000 l/min
Min Supply Pressure A→b
12 bar
Min Supply Pressure B→a
20 bar
Nominal Flow Rate (5 Bar/edge)
980 l/min
Nominal Size
50
Pilot Valve Supply Flow (5 Bar)
28 l/min
Solenoid Connector
DIN 43650/ISO 4400 (M16x1.5)
Weight
9.7 kg
1620 Old Apex Road
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