Bosch Rexroth | Z4WE6E13721AW110RZ5
Z4WE6E13721AW110RZ5
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The Z4WE6E13721AW110RZ5 directional spool valve belongs to the WE Directional Spool Valves series and is produced by Bosch Rexroth for electrically controlled hydraulic automation. It is built in nominal size 6 (NG6) and mounts on manifolds that follow the ISO 4401-03-02-0-05 pattern or the NFPA D03 pattern. The solenoid is rated for 110 V at 50/60 Hz; current draw equals 0.52 A at 50 Hz and 0.39 A at 60 Hz to match common power supplies. During energization the assembly requires 220 VA as switch-on power, then drops to 50 VA as holding power to reduce thermal load. A 100 % duty cycle allows continuous service, and the IP65 protection class prevents dust ingress and water jet damage during routine plant operation.
The hydraulic stage tolerates a maximum operating pressure of 350 bar on ports A, B, and P, while the tank port withstands 160 bar to safeguard return flow under back-pressure conditions. Channel geometry passes up to 60 l/min, providing adequate flow for medium-capacity actuators. Fluid cleanliness must be maintained at ISO 4406 class 20/18/15 to minimize wear on the spool and body. The coil surface may reach 120 °C without loss of function, which accommodates the heat produced by continuous energization. These pressure, flow, cleanliness, and temperature limits combine to control internal leakage and overheating, ensuring repeatable shifting cycles in demanding hydraulic circuits.
Technical Specifications
Duty Cycle
100%
Fluid Cleanliness (iso 4406)
20/18/15
Holding Power
50 VA
Max Coil Surface Temperature
120 °C
Maximum Flow (ac)
60 l/min
Maximum Operating Pressure (a/b/p)
350 bar
Maximum Tank Port Pressure (ac)
160 bar
Nominal Size
6 (NG6)
Nominal Voltage
110 V 50/60 Hz
Porting Pattern (iso)
ISO 4401-03-02-0-05
Porting Pattern (nfpa)
D03
Protection Class
IP65
Rated Current (50 Hz)
0.52 A
Rated Current (60 Hz)
0.39 A
Switch-on Power
220 VA
1620 Old Apex Road
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