Variable Displacement Piston pump A7VO

Highlights and Innovations

1. variable displacement axial piston design with a swashplate

2. recognized for their electro-hydraulic control capability

3. responsive integration with modern electronic control systems

4. exceptionally high power density

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Feature:

1.Variable pump with axial tapered piston rotary group of bent-axis design, for hydrostatic drives in open circuit

2.For use in mobile and stationary applications

3. Flow is proportional to the drive speed and displacement.

4.The flow can be steplessly changed by adjusting the bent axis.

5.Wide selection of control devices

6.Compact, robust pump with a long service life

Product	A7VO
Application	1.large hydraulic presses 2.heavy-duty construction machinery 3.marine and offshore equipment 4.Test bench systems
Displacement/Size	28, 40, 55, 63, 80, 100, 125, 140, 160, 180, 200, 250, 280, 355, 400, and 500ml/rev
Control types	constant pressure control, load sensing control, electro-proportional control, and horsepower control.
Max pressure	350 Bar
Max Speed	3000rpm
Max Flow	1300L
Material	Cast Iron
Guarantee Period	1 Year
Customization or not	/

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Size		NG		28	55	80	107	160
Displacement,geometric,per revolution		Vg max	cm³	28.1	54.8	80	107	160
Maximum rotational	At Vgmax	Nnom	rpm	3150	2500	2240	2150	1900
speed¹)	At Vg<0.74×Vgmax	Nmax1	rpm	4250	3400	3000	2900	2560
Maximum rotationalspeed ²)		Nmax2	rpm	4750	3750	3350	3200	2850
Flow	At Vg max and nnom	qv	I/min	89	137	179	230	304
Power	At Vgmax,nnom and △p=350 bar	P	kW	52	80	105	134	177
Torque	At Vgmax and △p=350 bar	T	Nm	156	305	446	596	891
Rotary stiffness	Vgmax toVg/2	Cmin	kNm/rad	5	10	16	21	36
Rotary stiffness	Vg/2 to 0(interpolated)	Cmax	kNm/rad	16	32	49	67	104
Moment ofinertia rotary group		JGR	kgm²	0.0042	0.0042	0.0080	0.0127	0.0253
Maximum angular acceleration		α	rad/s²	35900	31600	24200	19200	15300
Case volume		V	I	0.5	0.75	1.2	1.5	2.4
Weight (approx.)		m	kg	17	25	40	49	71