Bosch Rexroth | 4WEH22J7X6EW110N9SDA-CSA
4WEH22J7X/6EW110N9SDA CSA
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The 4WEH22J7X/6EW110N9SDA CSA directional spool valve belongs to the WEH Directional Spool Valves series produced by Bosch Rexroth. It directs pressurized fluid in hydraulic automation circuits. A nominal size of NG25 defines the flow passages for mid-range power systems. The ISO 4401-08-08-0-05 porting pattern matches common subplates, simplifying manifold layout. A maximum operating pressure of 280 bar at ports P, A, and B lets the valve handle high-pressure feeds without external boosters. At that pressure, symbol J flow reaches 600 l/min, supporting fast actuator movement. Acceptable hydraulic fluid viscosity spans 2.8 to 500 mm²/s, so the unit accommodates light startup oils and heavier working grades. The hydraulic fluid temperature may range from −20 to +80 °C, and ambient temperature may range from −20 to +50 °C, allowing outdoor or unheated installation. Cleanliness must meet ISO 4406 20/18/15 to protect internal sealing edges.
When circuit pressure is reduced to 70 bar, symbol J flow increases to 700 l/min, enabling rapid cycling in low-pressure applications. Pilot control needs at least 10.5 bar but can accept up to 210 bar, giving designers freedom to tap various pilot sources. Port T can withstand 250 bar back-pressure, while port Y is limited to 160 bar, which guides the sizing of return and drain plumbing. Six mounting screws sized M12 × 60 per ISO 4762 secure the body to the subplate and keep the sealing interface rigid during load changes. These attachment details, combined with the defined pressure limits, ensure stable operation during pressure spikes and repeated switching.
Technical Specifications
Ambient Temperature Range (nbr)
−20 to +50 °C
Cleanliness Class
ISO 4406 20/18/15
Hydraulic Fluid Temp Range (nbr)
−20 to +80 °C
Max Flow (symbol J, 280 Bar)
600 l/min
Max Flow (symbol J, 70 Bar)
700 l/min
Max Operating Pressure (p, A, B)
280 bar
Max Pressure At Port T
250 bar
Max Pressure At Port Y (ac)
160 bar
Maximum Pilot Pressure
210 bar
Minimum Pilot Pressure
10.5 bar
Mounting Screws
6 × M12 × 60 (ISO 4762)
Nominal Size
NG25
Porting Pattern
ISO 4401-08-08-0-05
Viscosity Range
2.8 to 500 mm²/s
1620 Old Apex Road
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