Variable Displacement Piston pump AA4VG, China Variable Displacement Piston pump AA4VG Manufacturers, Suppliers, Factory - Wenzhou Prance Hydraulic Equipment Co., Ltd

Feature:

1.Integrated auxliay pump for boost and piot oilsupply.

2.Flow direcion changes smoothy when the swashplate is moved through the neutral postion

3.High-pressure relief valves with integated boost function.

4.With adjustable pressure cut-off as standard

5.Boost-pressure relief valve

6.Through drive for mounting of further pumps up to same nominal size

7.Large variety of controls

8.Swashplate design

Size				28	40	56	71	90	125	180	250
Displacementvariable pump		Vg max	in³	1.71	2.44	3.42	4.33	5.49	7.63	10.98	15.25
Displacementvariable pump		Vg max	cm³	28	40	56	71	90	125	180	250
boost pump(at p=290 psi/20 bar)		Vg sp	in³	0.37	0.52	0.71	1.20	1.20	1.73	2.43	3.20
boost pump(at p=290 psi/20 bar)		Vg sp	cm³	6.1	8.6	11.6	19.6	19.6	28.3	39.8	52.5
Speedmaximum at Vg max
Speedmaximum at Vg max		nmax continuous	rpm	4250	4000	3600	3300	3050	2850	2500	2400
limited maximum ¹)		Nmax limited	rpm	4500	4200	3900	3600	3300	3250	2900	2600
intermittent maximum 2)		Nmax interm	rpm	5000	5000	4500	4100	3800	3450	3000	2700
minimum		Nmin	rpm	500	500	500	500	500	500	500	500
Flowat nmax cortinuous and Vg max		qvmax	gpm	31.5	42.3	53.4	61.8	72.5	94.1	118.8	158.4
Flowat nmax cortinuous and Vg max		qvmax	I/min	119	160	202	234	275	356	450	600
Power 3) p=5at nmax continuous and Vamx	△p=5800 psi	Pmax	hp	106	144	180	209	245	318	402	536
Power 3) p=5at nmax continuous and Vamx	△p=40obar		kW	79	107	134	156	183	237	300	400
Torque 3)at Vg max	△p=5800 psi	Tmax	lb-ft	131	187	263	333	422	587	844	1173
	△p=40obar		Nm	178	255	356	451	572	795	1144	1590
	△p=1450 psi	T	lb-ft	22.7	32.4	45.4	57.4	72.8	101.2	145.6	202.2
	△p=100 bar		Nm	44.5	63.5	89	112.8	143	198.8	286	398
Rotary stiffness	shaft end S	c	lb-ft/rad	23159	50892	59595	72871	116609	161010	180334	261466
	shaft end S	c	Nm/rad	31400	69000	80800	98800	158100	218300	244500	354500
	shaft end T	c	lb-ft/rad	一	一	70068	89171	-	185939	234840	394079
	shaft end T	c	Nm/rad	一	一	95000	120900	一	252100	318400	534300
	shaft end U	c	Ib-ft/rad	一	37468	一	一	79362	一	一	一
	shaft end U	c	Nm/rad	一	50800	一	一	107600	一	一	一
Moment of inertia for rotary group		JGR	lbs-ft²	0.0522	0.0902	0.1566	0.2302	0.3536	0.5505	1.0536	2.3327
Moment of inertia for rotary group		JGR	kgm²	0.0022	0.0038	0.0066	0.0097	0.0149	0.0232	0.0444	0.0983
Angular acceleration max.4)		α	rad/s²	38000	30000	24000	21000	18000	14000	11000	6700
Filling capacity		V	gal	0.24	0.29	0.40	0.34	0.40	0.55	0.82	1.66
Filling capacity		V	L	0.9	1.1	1.5	1.3	1.5	2.1	3.1	6.3
Weight approx. (without through drive)		m	lbs	64	68	64	110	145	176	223	344
Weight approx. (without through drive)		m	kg	29	31	38	50	60	80	101	156