A8VO Hydraulic Double Axial Piston Pump

Size: A8VO55

Displacement : 2 x 54.8

Input speed at Vg max : 2500

Parameters

Size: A8VO55

Displacement : 2 x 54.8

Input speed at Vg max : 2500

Product Detail

Product Description

Hydraulic piston double pump A8VO55, A8VO80, A8VO107, A8VO140, A8VO200

Control devices: LAOH2, LAOK, LAOKS, LAOKH1, LAOKH2, LAOKH3, LA1H2, LA1S, LA1K, LA1KS, EP, LA1KH1, etc.Nominal pressure 350 bars. Peak pressure 400 bars

– Variable double pump A8VO with two axial tapered piston rotary groups of bent-axis design for hydrostatic drives in open circuits

– The flow is proportional to the input speed and to the displacement, and is infinitely variable from qV max to qV min = 0

– The pump is suitable for direct mounting on the flywheel case in diesel engines

– One common suction port for auxiliary pump and both circuits

– A wide range of control instruments is available for different control and regulating functions

– Individual power controller

– Integrated auxiliary pump with pressure-relief valve, optionally with additional pressure-reduction valve

– Power take-off for mounting axial piston and gear pumps

– Excellent power to weight ratio

– Long service life

Technical Data

Table of values (theoretical values, without efficiency and tolerances; values rounded)

Size			A8VO55	A8VO80	A8VO107	A8VO140	A8VO200
Displacement	Vg max	cm3	2 x 54.8	2 x 80	2 x 107	2 x 140	2 x 200
Displacement	Vg min	cm3	0	0	0	0	0
Gear ratio i = ninput/nrotary groups			1	1	1	1	1
Input speed at Vg max 1)	nmax 1	rpm	2500	2240	2150	2100	1950
at Vg ≤ Vg max2)	nmax	rpm	3000	2750	2450	2450	2250
Flow at nmax and Vg max	qv max	L/min	2 x 137	2 x 179	2 x 230	2 x 294	2 x 390
Power at nmax, Vgmax and Dp=350 bar	Pmax	kW	160	209	268	294 3)	325 3)
Input torque	Tmax	Nm	611	891	1192	1337 3)	1592 3)
Rotary stiffness (single rotary group)5)	cTW	Nm/rad	11213	17985	25565	41408	39505
Rotary stiffness (single rotary group)5)	cTW	Nm/rad	41442	67666	89381	146677	156876
Moment of inertia for rotary group	JTW	kgm2	0.0161	0.0209	0.0345	0.0581	0.0849
without power take-off (PTO)	JTW	kgm2	0.0126	0.0173	0.0288	0.05	0.075
Angular acceleration (single rotary group)5)	a	rad/s2	25800	21800	17100	7500	11000
Mass approx.	m	kg	82	90	116	146	180
Variation: with integrated auxiliary pump, F00, F.. 4)
Displacement with integrated auxiliary pump	Vg max	cm3	8.6	8.6	8.6 (10.7)	10.7	11 (19)4)
Effective displacement	Vg max/eff	cm3	9.7	9.7	11 (13.7)	12.7	13.6 (23.6)
Gear ratio i = ninput/naux. pump			0.887	0.887	0.78	0.843	0.804