Bosch Rexroth | 4WE6H73-6XEG96N9K4A12
4WE6H73-6X/EG96N9K4/A12
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The 4WE6H73-6X/EG96N9K4/A12 directional spool valve belongs to the WE Directional Spool Valves series and is manufactured by Bosch Rexroth for hydraulic automation circuits. A high-power wet-pin solenoid shifts the spool so that consistent force is available even in oil-immersed conditions. The coil operates on 96 V DC to suit industrial direct-current supplies, and its rated current of 0.33 A limits power demand and simplifies power supply sizing. Connection is made through a DIN EN 175301-803 K4 plug, facilitating quick replacement in field service. When installed with correctly sealed connectors, the enclosure achieves IP65, keeping dust and water jets from the energized parts. System pressure can be applied up to 350 bar, allowing the valve to handle high-pressure mobile and stationary installations. Mounting follows the ISO 4401-03-02-0-05 porting pattern so it can fit standard CETOP 3 manifolds without adapters.
During operation the valve passes up to 80 l/min of hydraulic fluid in direct current duty, providing adequate flow for medium-size cylinders and motors. Back-pressure at the tank port is permissible up to 210 bar, which supports circuits with restrictive return lines. A concealed manual override lets technicians shift the spool manually, and it tolerates tank pressures as high as 50 bar while being protected from accidental actuation. The coil’s surface temperature may reach 120 °C under continuous energization, so routing of adjacent hoses should account for this heat. Variant code A12 denotes an increased switching time, useful where controlled spool movement minimizes shock. Fluid cleanliness must meet ISO 4406 class 20/18/15 to prevent abrasive wear of the precision-ground spool and body. With two solenoids installed the assembly weighs 1.95 kg, allowing mounting on light subplates without additional support.
Technical Specifications
Cleanliness Class
ISO 4406 (c) 20/18/15
Coil Rated Current
0.33 A
Coil Surface Temperature Max
120 °C
Coil Voltage
96 V DC
Electrical Connection
DIN EN 175301-803 (K4)
Manual Override Max Tank Pressure
50 bar
Manual Override Type
Concealed
Maximum Flow (dc)
80 l/min
Maximum Operating Pressure
350 bar
Porting Pattern
ISO 4401-03-02-0-05
Protection Class
IP65
Solenoid Type
High-Power Wet-Pin
Switching Time Increase
A12
Tank Port Pressure (dc)
210 bar
Weight (two Solenoids)
1.95 kg
1620 Old Apex Road
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