Bosch Rexroth | 4WS2EM10-4X60B5ET315K8EV
4WS2EM10-4X/60B5ET315K8EV
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The 4WS2EM10-4X/60B5ET315K8EV servo valve is manufactured by Bosch Rexroth as part of the 4WS Servo Valves series. It meters hydraulic flow in automation circuits where proportional control is required. The valve size is 10, matching ISO cavity dimensions for medium-capacity manifolds. A rated flow of 60 l/min provides stable actuator speed, while a 70 bar pressure drop at that flow quantifies energy loss across the spool. The unit tolerates operating pressures up to 315 bar at ports P, A, and B, so it can be installed in high-pressure systems without derating. Hydraulic connections follow the ISO 4401-05-05-0-05 porting pattern to simplify block design and interchangeability. Pilot oil supply and return are both internal, eliminating external pilot lines and reducing leak paths. An IP65 protection class shields the electrical section against dust and low-pressure water jets during machine wash-down.
Each control coil presents a resistance of 85 Ω and is designed for a rated current of 30 mA, providing precise magnetic force with low power consumption. Dynamic response is tuned by an inductance of 0.25 H when coils are wired in parallel or 1.0 H in series, offering flexibility in drive electronics. The cleanliness requirement is ISO 4406 class 18/16/13, so upstream filtration must keep particulate levels within that range to maintain spool accuracy. A mechanical return system re-centers the spool when control current is removed, ensuring fail-safe neutral. FKM seals prevent leakage when exposed to common mineral oils at elevated temperatures. The valve mass is 3.56 kg, allowing straightforward mounting on sub-plates or manifolds without additional support.
Technical Specifications
Cleanliness Class (iso 4406)
18/16/13
Coil Inductance (parallel)
0.25 H
Coil Inductance (series)
1.0 H
Coil Rated Current (per Coil)
30 mA
Coil Resistance (per Coil)
85 Ω
Max Operating Pressure (p,a,b)
315 bar
Pilot Oil Return
Internal
Pilot Oil Supply
Internal
Porting Pattern
ISO 4401-05-05-0-05
Protection Class
IP65
Rated Flow
60 l/min
Rated Flow Pressure Drop
70 bar
Return System
Mechanical
Seal Material
FKM
Valve Size
10
Weight (mechanical Return)
3.56 kg
1620 Old Apex Road
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