NACHI-FUJIKOSHI CORP. / Product Info. / Hydraulic Equipment

Hydraulic Equipment

Type	Capacity (cm³/rev)	Maximum working pressure (MPa)	Rotational speed (min^-1)		Mass (kg)
Type	Capacity (cm³/rev)	Maximum working pressure (MPa)	Minimum	Maximum	Mass (kg)
PZS-3B	70	28	500	1800	37
PZS-4B	100	28	500	1800	58
PZS-5B	130	25	500	1800	86
PZS-6B	180	25	500	1800	123
PZS-6B	220	25	500	1500	126

Various control options enable circuit simplification and energy saving.

Control system	Symbol	Features
Pressure compensation type (manual)	N	Discharge amount automatically decreases to maintain the set pressure when discharge pressure reaches the value specified in the compensator. Remote control is also available using the attached pilot port.
2-pressure, 2-flow control type	NQ	Discharge pressure can change by two levels through the sequence valve embedded in the pump; therefore, one unit can perform conventional high/low pressure control and circuit energy can be saved.
Solenoid cutoff control type	RS	Solenoid valve for unloading is mounted on the pressure compensation type model, with the aim of minimizing energy loss when hydraulic pressure is not necessary.
2-pressure control type	WS	Two types of pressure compensation are obtained by turning on/off the solenoid valve embedded in the pump. The two kinds of output can be controlled while maintaining a constant actuator speed.
2-pressure, 2-flow control type with solenoid cutoff	RQS	Unload function is added to the 2-pressure, 2-flow control type, to enable unloading with the solenoid valve embedded in the pump when hydraulic pressure is not necessary.
2-cutoff control type	CS	Two kinds of pressure and flow characteristics can be obtained with the solenoid valve embedded in the pump and the discharge control mechanism.