Bosch Rexroth | 4WEH22J7X6EG12N9ETDAB08
4WEH22J7X/6EG12N9ETDA/B08
Request a Quote
Call For Quote
What Happens Next?
Email Confirmation
You will get an email confirming we have received your inquiry.
Dedicated Account Manager
A team member will review your request and be in touch concerning any questions or specifications.
Quote Delivered
You will receive a comprehensive quote tailored to your specific needs.
The 4WEH22J7X/6EG12N9ETDA/B08 unit belongs to the WEH Directional Spool Valves series from Bosch Rexroth. It routes hydraulic flow in automated machinery by means of electro-hydraulic actuation, where energized solenoids pilot the main spool. The 4-way layout provides four controlled flow paths, and the nominal size NG25 defines port dimensions suited for medium-frame power packs. A manifold drilled to the ISO 4401-08-08-0-05 pattern accepts the valve and keeps installation standardized. When the J spool is fitted, the body carries up to 450 l/min, and ports P, A, and B withstand 280 bar. Internal pilot supply and return eliminate auxiliary hoses, and the pilot stage draws 35 l/min for fast shifting. Spring-centering remains stable once pilot pressure reaches the 10.5 bar minimum.
The pilot circuit tolerates up to 210 bar without damage, and each shift moves 7.64 cm3 of oil, influencing response time. A throttle insert with a 0.8 mm orifice can be fitted to damp pilot flow and prevent overshoot. Ports X and Y are closed in the ET configuration, isolating the pilot stage when solenoids are de-energized. The fluid must meet ISO 4406 cleanliness level 20/18/15 to minimize wear, and an MTTFd of 100 years underscores statistical reliability. The assembly weighs 11.9 kg with two solenoids and centering springs, permitting single-person handling while providing the rigidity needed to contain rated pressures.
Technical Specifications
Actuation
Electro-Hydraulic
Cleanliness Class (iso 4406)
20/18/15
Max Flow (spool J)
450 l/min
Max Operating Pressure (p/a/b)
280 bar
Max Pilot Pressure
210 bar
Min Pilot Pressure (spring-centered)
10.5 bar
Mttfd
100 years
Nominal Size
NG25
Pilot Flow For Fast Switching
35 l/min
Pilot Supply/return
Internal/Internal
Pilot Volume (spring-centered)
7.64 cm3
Porting Pattern
ISO 4401-08-08-0-05
Ports X And Y Closed (et)
Yes
Throttle Insert Diameter
0.8 mm
Ways
4-Way
Weight (2 Solenoids, Spring-centered)
11.9 kg
1620 Old Apex Road
Shipping & Payment Options
