Japan, Nachi
Nachi PZS Series Piston Pump

Made in: Japan
 Manufacturer: NACHI
 Model: PZS Series (PZS-3B, PZS-4B, PZS-5B, PZS-6B)
Features
- Half-cylindrical swash plate and 11 pistons for low noise and low pulsation
 - Spherical valve plate for high efficiency
 - Multiple string option with our IPH series inscribed gear pump.
 
Application
- Ideal for a wide range of uses, as hydraulic source for general industrial machinery such as forging/forming equipment.
 

- Constant horsepower control type and load sensing control type also available in addition to the control options listed in the catalog. For details, please contact us.
 
Specifications
| Type | Capacity (cm3/rev)  | Maximum working pressure (MPa)  | Rotational speed (min-1)  | Mass (kg)  | |
|---|---|---|---|---|---|
| Minimum | Maximum | ||||
| 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 | Characteristics | 
|---|---|---|---|
| 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. | ![]()  | 

















