Bosch Rexroth | 4WRZ16W6-150-7X6EG24N9TK4D3M
4WRZ16W6-150-7X/6EG24N9TK4/D3M
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The 4WRZ16W6-150-7X/6EG24N9TK4/D3M proportional directional valve is manufactured by Bosch Rexroth within the WRZ Proportional Directional Valves series and is used to meter hydraulic flow in automation systems. Its solenoid has a resistance of 4.8 Ω at 20 °C, accepts a peak current of 1.5 A, and supports a 100 % duty cycle so electrical control can remain energized without cooling pauses. The winding tolerates temperatures up to 150 °C, and the enclosure carries an IP65 rating to block dust and water spray encountered around presses or molding equipment. Electrical hookup is made through a DIN EN 175301-803 connector, while a concealed manual override permits manual shifting during commissioning or power loss. Installation uses the ISO 4401-07-06-0-94 mounting pattern, allowing direct fit on standard subplates and keeping plumbing straightforward.
The valve operates with mineral oil in the HL or HLP classes specified by DIN 51524 and must receive fluid cleaned to 18/16/13 per ISO 4406 to protect spool lands. At a 10 bar differential it provides 150 l/min nominal flow, and the pilot stage draws 5.5 l/min as the command signal moves from 0 to 100 %. Main ports withstand 350 bar, while the internal drain in port T is limited to 30 bar to prevent seal extrusion. Hysteresis remains at or below 6 %, giving predictable flow for closed-loop position or speed control. The assembly weighs 13.4 kg, so the mounting surface must support that mass without distortion.
Technical Specifications
Coil Resistance (20 °c)
4.8 Ω
Duty Cycle
100%
Electrical Connection
DIN EN 175301-803
Fluid Cleanliness
18/16/13 (ISO 4406)
Hydraulic Fluid
Mineral Oil (HL, HLP) DIN 51524
Hysteresis
≤ 6%
Ip Rating
IP65
Manual Override
Concealed
Max Coil Temperature
150 °C
Max Current
1.5 A
Max Operating Pressure
350 bar
Max Port T Pressure (internal Drain)
30 bar
Mounting Pattern
ISO 4401-07-06-0-94
Nominal Flow (Δp=10 Bar)
150 l/min
Pilot Oil Flow (0→100%)
5.5 l/min
Weight
13.4 kg
1620 Old Apex Road
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