6
(4)
EMP-5SW
22. Directional control valve (ESW-4H, all ports open)
This is a four-way, three-position spool-type solenoid directional valve which changes the
flow direction of the hydraulic oil by exciting the right or left solenoid. When it is at the center
position, the oil returns to the tank.
25. Pilot operation check valve (ECH-4)
This valve is opened and closed by pilot pressure to maintain the pressure in the circuit.
When the directional control valve is at the center position, it prevents the cylinder piston
from moving.
4-M10 depth 25
36
Discharge port
Rc 3/8
35
Return port
Rc 3/8
34
Oil drain port
Rc 3/8
29
Oil level gauge
27
Air breather
25
Pilot operation check valve
ECH-4
22
Directional control valve
ESW-4H-2
18
Pressure switch
DPGS-70
6
Activation switch
5
Magnet switch
4
Motor
1
Oil tank
No.
Name
Remarks
