Bosch Rexroth | 4WEH22EA7X6EG24N9ETK4QM0G24B08D3
4WEH22EA7X/6EG24N9ETK4QM0G24/B08D3
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The 4WEH22EA7X/6EG24N9ETK4QM0G24/B08D3 directional spool valve belongs to the WEH Directional Spool Valves series from Bosch Rexroth and directs hydraulic flow in automated machinery. It is built in size NG25, providing a standardized mounting interface for mid-range power circuits. The spool variant E permits a continuous flow rate of 450 l/min, while ports P, A, and B tolerate up to 280 bar. Internal pilot oil supply through port E and internal return via port T eliminate external pipes. A 0.8 mm throttle insert identified as B08 damps pilot oil for stable spool movement. The valve weighs 11.9 kg with two spring-centered solenoids installed, and a concealed N9 manual override allows mechanical actuation during service. Hydraulic fluid must reach ISO 4406 cleanliness class 20/18/15 to protect the precision fit between the spool and housing. These design elements equip the unit for high-duty directional control in press, forging, and mobile equipment.
Pilot solenoids operate on a 24 V DC supply, compatible with common control cabinets. Electrical connection is made through a DIN EN 175301-803 K4 plug, giving a sealed yet serviceable interface. Rest-position monitoring under code QM0G24 delivers an electrical feedback signal when the spool is centered. The pilot circuit needs a minimum pressure of 10.5 bar to overcome the return springs and accepts up to 210 bar during operation. A pilot flow of 35 l/min is recommended for the shortest switching time. Each actuation displaces 7.64 cm³ in the pilot volume of the three-position spring-centered design, governing response speed. These pilot characteristics support precise timing when the valve shifts heavy-duty circuits.
Technical Specifications
Cleanliness Class
ISO 4406 20/18/15
Electrical Connection
DIN EN 175301-803 K4
Electrical Supply (pilot Solenoid)
24 V DC
Manual Override
Concealed (N9)
Max Flow (spool E)
450 l/min
Max Operating Pressure (p, A, B)
280 bar
Max Pilot Pressure
210 bar
Min Pilot Pressure (spring-centered)
10.5 bar
Pilot Flow For Shortest Switching Time
35 l/min
Pilot Oil Return
Internal (T)
Pilot Oil Supply
Internal (E)
Pilot Volume (3-position, Spring-centered)
7.64 cm3
Size
NG25
Spool Position Monitoring
Rest Position (QM0G24)
Throttle Insert
0.8 mm (B08)
Weight (two Solenoids, Spring-centered)
11.9 kg
1620 Old Apex Road
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