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High Pressure Variable Displacement Piston Pump A10VSO 52 Series

High Pressure Variable Displacement Piston Pump A10VSO 52 Series

1.Variable pump with axial piston rotary group in swashplate design for hydrostatic drives in open circuit.

2.Flow is proportional to drive speed and displacement.

3.The flow can be infinitely varied by adjusting the swashplate angle.

4.Stable bearing for long service life

5.High permissible drive speed

6.Favorable power-to-weight ratio – compact dimensions

Detailed description

This is a variable pump built with an axial piston rotary group adopting swashplate design, tailor-made for hydrostatic drive systems in open circuit hydraulic applications. The pump’s output flow is strictly proportional to the input drive speed and its own displacement capacity. By precisely adjusting the swashplate inclination angle, the flow rate can achieve stepless infinite variation, which flexibly adapts to different flow regulation requirements of hydraulic systems. It is equipped with high-performance stable bearings, effectively reducing mechanical wear and friction loss, and greatly extending the overall service life of the pump unit. The product supports high permissible drive speed, delivering efficient and powerful hydraulic output under high-speed operating conditions. Meanwhile, it features a favorable power-to-weight ratio and compact overall dimensions, saving installation space, lowering equipment overall weight, and offering outstanding adaptability for both mobile machinery and industrial fixed hydraulic equipment layouts.

Type code series 52

01	02	03	04		05	06		07	08	09	10	11	12
A10V(S)	○			/	32		-	v

Axial piston unit

		10	28	45	60	85
01	Swashplate design, variable, nominal pressure 250 bar, maximum pressure 315 bar	●	-	-	-	-	A10VS
01		-	●	●	●	●	A10V

Operation mode

Pump, open circuit

○

Size(NG)

Geometric displacement, see table of values on page 10

Control device

Pressure controller

hydraulic

●

with flow controller

hydraulic

X-T open

●

DFR

X-T plugged

with flushing function

●

DFR1

without flushing function

●

DRSC

with pressure cut-off

hydraulic

remotely controlled

●

DRG

electrical

negative control

U=12V

●

ED71

U=24V

●

ED72

electrical

positive control

U=12V

●

ER71

U=24V

●

ER72

Differential pressure control

electric control (negative control)

●

○

EF..¹⁾

Series

		10	28	45	60	85
05	Series 5, index 2	●	●	●	●	●	52

Direction of rotation

06	Viewed on drive shaft	clockwise	R
		counter-clockwise	L

Sealing material

FKM (fluoroelastomer)

Drive shaft

08	Splined shaft IS0 3019-1	standard shaft	●	●	●	●	●	S
		similar to shaft "S" however for higher input torque	-	●	●	●	●	R
		reduced diameter, limited suitability for through drive	●	●	●	●	●	U
		similar to shaft "U", however for higher torque only conditionally suitable for mounting with through drive.	-	●	●	●	●	W
	Parallel keyed shaft DIN 6885 limited suitability for through drive		●	-	-	-	-	P

Mounting flange

09	ISO 3019-2 (ISO)	2-hole	●	-	-	-	-	A
	ISO 3019-1 (SAE)	4-hole	●	●	●	●	●	C
	ISO 3019-1 (SAE)	4-hole	-	-	-	●	-	D

Working port

				10	28	45	60	85
10	SAE flange ports Fastening thread metric	rear	not for through drive	-	●	●	●	●	11
		laterally opposite	for through drive	-	●	●	●	●	12
		at side,offset 90°	not for through drive; available for counter-clockwise rotation only	-	-	●	-	-	13
	Threaded port metric	rear	not for through drive	●	-	-	-	-	14

Through drive

11	Flange IS0 3019-1 Diameter	Hub for splined shaft¹⁾ Diameter		045	071	100	140	180
	without through drive			●	●	●	●	●	N00
	82-2 (A)	5/8 in	9T 16/32DP	-	●	●	●	●	K01
	82-2 (A)	3/4 in	11T 16/32DP	-	●	●	●	●	K52
	101-2 (B)	7/8in	13T 16/32DP	-	●	●	●	●	K68
	101-2 (B)	1in	15T 16/32DP	-	-	●	●	●	K04
	127-4 (C)	1 1/4in	14T 12/24DP	-	-	-	●	●	K15
	127-4 (C)	1 1/2 in	17T12/24DP	-	-	-	-	●	K16
	127-2 (C)	1 1/4 in	14T 12/24DP	-	-	-	-	●	K07
	127-2 (C)	1 1/2 in	17T 12/24DP	-	-	-	-	●	K24

Connectors for solenoids

12	Without connector (without solenoid, only for hydraulic controls, without signs)	●	●	●	●	●
12	DEUTSCH - molded connector, 2-pin, without suppressor diode (for electric control)	-	●	●	●	●	P

•= Available ○ = On request - = Not available

Technical data

Size		NG		10	18	28	45	60	63	72	85	100
Displacement, geometric, per revolution		V_g_max	cm³	10.5	18	28	45	60	63	72	85	100
Rotational speed maximum¹⁾	at V_{g max}	n_nom	rpm	3600	3300	3000	2600⁴⁾	2700	2600	2600	2500	2300
Rotational speed maximum¹⁾	at V_g <V_g max ²⁾	n_{max adm.}	rpm	4320	3960	3600	3120	3140	3140	3140	3000	2500
Flow	at n_nom and V_{g max}	q_v	I/min	37	59	84	117	162	163	187	212	230
Flow	at n_E = 1500 rpm	q_v_E	I/min	15	27	42	68	90	95	108	128	150
Power	With N_nom, V_{g max} and Δp = 250 bar	P	kW	16	25	35	49	65	68	77	89	96
Power	at n_E= 1500 rpm	P_E	kW	7	11	18	28	37	39	45	53	62
Torque	at V_{g max} and Δp = 250 bar	M	Nm	42	71	111	179	238	250	286	338	398
Torque	at V_{g max} and Δp = 100 bar	M	Nm	17	29	45	72	95	100	114	135	159
Rotary stiffness Drive shaft	S	c	Nm/rad	9200	11000	22300	37500	65500	65500	65500	143000	143000
	R	c	Nm/rad	-	14800	26300	41000	69400	69400	69400	152900	152900
	U	c	Nm/rad	6800	8000	16700	30000	49200	49200	49200	102900	102900
	W	c	Nm/rad	-	-	19900	34400	54000	54000	54000	117900	117900
	P	c	Nm/rad	10700	-	-	-	-	-	-	-	-
Moment of inertia of the rotary group		J_TW	Kgm²	0.0006	0.0009	0.0017	0.003	0.0056	0.0056	0.0056	0.012	0.012
Maximum angular acceleration³⁾		α	rad/s²	8000	6800	5500	4000	3300	3300	3300	2700	2700
Case volume		V	L	0.2	0.25	0.3	0.5	0.8	0.8	0.8	1	1
Weight without through drive (approx.) Weight with through drive (approx.)		m	kg	8	11.5	15	18	22	22	22	36	36
		m	kg	-	13	18	24	28	28	28	45	45

Determining the operating characteristics

Flow	q_v=(V_g∙ n ∙ η_v) / 1000	I/min
Torque	M=(V_g ∙ Δp) /(20 ∙ π ∙ η_h_m)	Nm
Power	P=(2π ∙ M ∙ n)/60000=(q_v∙ Δp)/(600 ∙ η_t)	kW

Key

V_g Displacement per revolution in [cm³]

Δp Differential pressure [bar]

n Rotational speed [rpm]

η_v Volumetric efficiency

η_h_m Hydraulic-mechanical efficiency

η_t Total efficiency (η_t= η_v*η_hm)

¹⁾ The values are applicable:

- At an abs. pressure p_abs = 1 bar at the suction port S

- for the optimum viscosity range from V_opt = 36 to 16 mm²/s

- with hydraulic fluid on the basis of mineral oils

²⁾See diagram on page 9 at speed increase up to n_{max adm}.

³⁾The data are valid for values between the minimum required and maximum permissible rotational speed. It applies for external stimuli (e.g. diesel engine 2 to 8 times rotary frequency, cardan shaft twice the rotary frequency). The limit value is only valid fora single pump. The load capacity of the connection parts must be considered.

Permissible radial and axial forces on the drive shaft

Size	NG		10	18	28	45	60/63	72	85	100
Maximum radial force at a/2	F_{q max}	N	250	350	1200	1500	1700	1500	2000	2000
Maximum axial force	±F_{ax max}	N	400	700	1000	1500	2000	1500	3000	3000

Permissible input and through-drive torques

Size				10	18	28	45	60/63	72	85	100
Torque at V_{g max} and Δp = 250 bar¹⁾		M_max	Nm	42	71	111	179	250	321	338	398
Maximum input torque on drive shaft²⁾
	S	M_{E max}	Nm	126	124	198	319	630	630	1157	1157
	S	∅	in	3/4	3/4	7/8	1	1 1/4	1 1/4	1 1/2	1 1/2
	R	M_{E max}	Nm	-	160	250	400	650	650	1215	1215
	R	∅	in	-	3/4	7/8	1	1 1/4	1 1/4	1 1/2	1 1/2
	U	M_{E max}	Nm	60	59	105	188	306	306	628	628
	U	∅	in	5/8	5/8	3/4	7/8	1	1	1 1/4	1 1/4
	W	M_{E max}	Nm	-	-	140	220	396	383	650	650
	W	∅	in	-	-	3/4	7/8	1	1	1 1/4	1 1/4
	P	M_{E max}	Nm	90	-	-	-	-	-	-	-
	P	∅	mm	18	-	-	-	-	-	-	-
Maximum through-drive torque
	S	M_{D max}	Nm	-	108	160	319	484	484	698	698
	R	M_{D max}	Nm	-	120	176	365	484	484	698	-
	U	M_{D max}	Nm	-	59	105	188	306	306	628	628
	W	M_{D max}	Nm	-	-	140	220	396	383	650	650

Distribution of torques

Torque at 1st pump	M₁
Torque at 2nd pump	M₂
Torque at 3rd pump	M₃
Input torque	M_E=M₁₊M₂₊M₃
Input torque	M_E< M_{E max}
Through∙drive torque	M_D=M₂₊M₃
Through∙drive torque	M_D< M_{D max}

¹⁾Efficiency not considered

²⁾ For drive shafts with no radial force

Variable Displacement Piston Pump A10VSO 52 series

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