Download Fatigue Test Rig

Fatigue Test Rig
Technical document
rev. 1.0
9.2 Hydraulic valve
Figure 61: Bosch Rexroth 4WE 6 J6X/EG24K4 directional valve [17]
Figure 61: 4/3 valve spool
The valve is a hydraulic 4/3 valve. The valve is a directly operated directional spool valve with
solenoid actuation. The valve function is to distribute and stop flow in hydraulic systems. It
has two inputs and two outputs for hydraulic lines. The valve is assembled together with an
ng6 Cetop sub plate. Lines A and B is to each side of the hydraulic cylinder. P is for the
pressure in from the hydraulic pump and T is to the fluid reservoir. The electrical side A and
B is connected to the PLC.
The magnets on each side react when they gets a signal of 230V and switch to the desired
position. If the magnet spool (a) on the left of the picture gets 230V voltage it switch the
slide inside to open fluid output A, and opens fluid output B when magnet spool (b) on the
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