Hydraulic Piston Pump, Model HL-A11VO

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Website: http://hydraulicsystem-en.com/1-1-12-variable-displacement-pump.html

(74-260cm³/rev variable displacement axial piston pump for open circuit)

The HL-A11VO series hydraulic pump is built for compact, durable performance, delivering steady hydraulic power even under tough conditions. It is especially well-suited for applications with rapidly changing dynamic loads.

• Displacement 74-260 cm³/rev
• Nominal pressure 350 bar
• Max. allowable pressure 400 bar

Technical Data (Size 75 - 130)

Size				75	95	115	130
Geometric displacement		Vg max	cm³/rev	74	93.5	93.5	130
		Vg min	cm³/rev	0	0	0	0
Rotation speed	at Vg max	nmax	rpm	2550	2350	2350	2100
	at Vg≤Vg max	nmax1	rpm	3000	2780	2780	2500
Flow	at nmax and Vg max	qv max	L/min	189	220	220	273
Power	at qv max and Δp=350bar	Pmax	kW	110	128	128	159
Torque	at Vg max and Δp=350bar	Tmax	Nm	412	521	521	724
Rotary stiffness of drive shaft	Shaft end Z	c	Nm/rad	145836	199601	199601	302495
	Shaft end P	c	Nm/rad	143104	196435	196435	312403
	Shaft end S	c	Nm/rad	101921	173704	173704	236861
	Shaft end T	c	Nm/rad	125603	-	-	-
Moment of inertia for rotary group		JTW	kgm²	0.0115	0.0173	0.0173	0.0318
Max. angular acceleration		α	rad/s²	15000	13000	13000	10500
Case volume		V	L	1.85	2.1	2.1	2.9
Weight	approx.	m	kg	45	53	53	66

Technical Data (Size 145 - 260)

Size				145	190	260
Geometric displacement		Vg max	cm³/rev	145	193	260
		Vg min	cm³/rev	0	0	0
Rotation speed	at Vg max	nmax	rpm	2200	2100	1800
	at Vg≤Vg max	nmax1	rpm	2500	2100	2300
Flow	at nmax and Vg max	qv max	L/min	319	405	468
Power	at qv max and Δp=350bar	Pmax	kW	186	236	273
Torque	at Vg max and Δp=350bar	Tmax	Nm	808	1075	1448
Rotary stiffness of drive shaft	Shaft end Z	c	Nm/rad	302495	346190	686465
	Shaft end P	c	Nm/rad	312403	383292	653835
	Shaft end S	c	Nm/rad	236861	259773	352009
	Shaft end T	c	Nm/rad	-	301928	567115
Moment of inertia for rotary group		JTW	kgm²	0.0341	0.055	0.0878
Max. angular acceleration		α	rad/s²	9000	6800	4800
Case volume		V	L	2.9	3.8	4.6
Weight	approx.	m	kg	76	95	125

Size	Displacement (cm³/rev)		Max. speed (rpm)		Max. Flow (L/min)	Max. power (kw)
	Vgmax	Vgmin	Vgmax	Vg≤Vgmax		Δp=350 bar
75	74	0	2550	3000	189	110
95	93.5	0	2350	2780	220	128
115	93.5	0	2350	2780	220	128
130	130	0	2100	2500	273	159
145	145	0	2200	2500	319	186
190	193	0	2100	2100	405	236
260	260	0	1800	2300	468	273

Features

• Static hydraulic transmission Designed for open-loop hydraulic systems.
• Flow proportional to drive speed and displacement Allows stepless adjustment through swivel angle changes.
• Auto-supply operation Runs with either pressurized tanks or optional built-in charge pump.
• Variety of control options Provides flexibility to meet different application demands.
• External power control adjustability Control devices can be adjusted even during operation.
• Through-drive capability Compatible with gear pumps or other axial piston pumps of the same size.
• Flow output adjustable from zero Provides fine-tuned control between zero and maximum flow.
• Control Mode DRS, EP, EPD, LRDU, LES, LRDS, LRDH

Applications

Mining and Quarrying Equipment

Construction Machinery

This axial piston pump offers reliability, precision, and flexibility for your hydraulic system. Contact us today to find the right solution for your application.