A4VTG 90 Hydraulic Piston Pump

Views: 6 Author: Site Editor Publish Time: 2022-06-08 Origin: Site

A4VTG90 hydraulic piston pump is variable axial piston pump with swash plate.A4VTG90 hydraulic piston pump is designed for hydrostatic drives in closed circuit.

A4VTG90hydraulic piston pump flow is proportional to the drive speed and displacement.The flow of A4VTG90 hydraulic piston pump increases as the angle of the swash plate that is adjusted from zero to its maximum value.

A4VTG90 hydraulic piston pump flow direction changes smoothly when the swash plate is moved through the neutral position.

Two pressure relief valves of A4VTG90 hydraulic piston pump is provided on the high pressure ports to protect the hydrostatic transmission from overload.

A4VTG90 Hydraulic Piston Pump Technical Data

Table of values (theoretical values)

A4VTG pump				A4VTG71	A4VTG90
Displacement	Variable pump	Vg max	cm3	71	90
Displacement	auxiliary pump	Vg H	cm3	18,7	25,7
Speed	Max. speed at Vg max	N max continuous	rpm	3300	3050
	Limited max.	N max limited	rpm	3600	3300
	Intermittent max.	N max continuous	rpm	4100	3800
	minimum speed	N min	rpm	500	500
Flow	at N max Dauer and Vg max	Q max	L/min	234	275
Power	at N max Dauer Ap= 400 bar	P max	kW	156	183
Torque	atVg max Ap= 400 bar	T max	Nm	451	572
(Variable pump without aux. pump) Ap= 100 bar		T	Nm	112,8	143
Moment of inertia (about drive axis)		J	kgm2	0,0072	0,0106

A4VTG 90 Hydraulic Piston Pump | Fucheng

A4VTG 90 Hydraulic Piston Pump

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