Closed variable pump A4VG180

Application scenarios：

Swash plate structure axial piston variable displacement pump, used for static hydraulic transmission in closed circuits

The flow rate is proportional to the driving speed and displacement, and can be infinitely adjusted

Built in oil replenishment pump used as fuel supply and control pump

Electric proportional displacement control, meeting the requirements of multiple industry applications

The maximum oil replenishment pressure is limited by the built-in low-pressure relief valve

Assembly precautions

(1) During the assembly process, please be careful not to leave burrs on the assembly surface and do not allow dust to enter;

(2) After assembly, dust proof treatment should be applied to the exposed holes;

(3) Apply rust inhibitor to the input shaft and flange;

(4) When spraying paint, the nameplate and installation surface need to be covered to avoid painting.

Operation precautions

(1) When transporting hydraulic pumps, do not subjected the drive shaft of the pump body to strong impact.

(2) Before operation, it is necessary to exhaust through the exhaust port to fill the housing with clean hydraulic oil;

(3) When running the hydraulic pump, be careful not to let hydraulic oil and other liquids flow onto the surface of the hydraulic pump assembly;

(4) The cleanliness of the hydraulic oil used should meet NAS level 9.

model	A4vG18OEP31/32L-NSDO2F071F
displacement	180mL/r
Rotation direction	Left-handed rotation
Rated speed	2500rpm
Maximum speed	2900rpm
Rated pressure	400bar
Maximum pressure	450bar
Minimum pressure on the low-pressure side	10 bar (relative to shell pressure)
Oil replenishment pressure	25bar (speed: 1000rpm)
Refueling oil pump displacement	40mL/r
Shell pressure	Maximum: 3 bar Peak value: 5 bar
Oil suction pressure	Minimum (absolute pressure): 0.8bar Maximum (absolute pressure):5bar
High pressure relief valve	450bar
control mode	Electric proportional displacement control (DC) 12v; Deutsch DT04-2P, 2-pin
Filtering method	Integrated pressure oil filtration
Filtering accuracy	10um
Input shaft	13T 8/16DP ANSI B92.1a
Installing flanges	SAEJ7444 mounting hole; Stop diameter 165.1mm, stop depth 15.7mm
Through axis drive	Installation flange: SAE J744 127-2 (C); Internal spline: 1.1/4 in 14T 12/24DP
Oil port type	Opposite oil port$ 32mm, M14X2, thread depth 23
Housing return port	ISO 1192615/8-12UN-2B
Pressure tap for oil replenishment pressure	DIN 3852 M18×1.5
Servo and housing pressure measuring ports	ISO 11926 9/16-18UNF-2B

Open variable pump

Open variable pump

Closed variable pump

Closed variable pump