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Closed Loop Variable Displacement Piston Pump AA4VG

Closed Loop Variable Displacement Piston Pump AA4VG

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

6.Large variety of controls

Descripción detallada

1.Integrated auxiliary pump for boost and pilot oil supply, which integrates the boost and pilot oil supply functions into a single component, effectively simplifying the overall hydraulic system structure, reducing installation space, and ensuring stable and reliable oil supply for both boost and pilot circuits, thus improving the operational stability of the entire equipment.

2.Flow direction changes smoothly when the swashplate is moved through the neutral position. This design avoids sudden pressure fluctuations and impact during flow direction switching, reduces mechanical wear of internal components, extends the service life of the pump, and ensures smooth and steady operation of the hydraulic system during forward and reverse operation.

3.High-pressure relief valves with integrated boost function, which not only play a role in overpressure protection to prevent damage to the system caused by excessive pressure but also integrate the boost function, realizing the integration of multiple functions, reducing the number of independent components, and lowering the system cost and maintenance difficulty.

4.With adjustable pressure cut-off as standard, allowing users to flexibly adjust the pressure cut-off value according to actual working conditions and load requirements, ensuring the pump operates within the safe pressure range, and adapting to different application scenarios to improve the versatility and applicability of the pump.

5.Through drive for mounting of further pumps up to same nominal size, providing a convenient and compact installation solution for expanding the hydraulic system. It enables the installation of additional pumps of the same nominal size without redesigning the drive structure, enhancing the expandability of the system and meeting the needs of large flow or multi-circuit oil supply.

6.Large variety of controls, including manual, hydraulic, electric and other control modes, which can be selected according to the actual control requirements of the equipment, realizing flexible and precise control of the pump, and adapting to different operating environments and control systems.

Selección y solicitud de cotización

Esta serie de productos debe seleccionarse en función del circuito hidráulico aprobado. Confirme el caudal o desplazamiento requerido, la presión continua y de punta, la velocidad de accionamiento, el tipo de control, el fluido y la interfaz de instalación antes de la selección final.

Información que debe incluir en su RFQ

Desplazamiento o caudal requerido a la velocidad de operación
Presión del sistema continua y máxima
Velocidad de accionamiento, requisito de control y tipo de circuito
Brida de montaje, eje, puertos, requisitos de fluido y filtración

Recursos relacionados

Solicitar un presupuesto · Centro de descargas · OEM / ODM

Escribe código

01	02	03	04	05	06	07	08	09		10	11		12	13	14	15	16	17	18	19	20	21	22
AA4V	G			D					/	32		-	N

Unidad de pistones axiales

Swashplate design, variable, nominal pressure 5800 psi (400 bar), maximum pressure 6500 psi (450 bar)

AA4V

Modo de operación

Bomba, circuito cerrado

Tamaño (NG)

03	Desplazamiento geométrico, véase "Datos técnicos" en la página 8	in3/rev.	1.71	2.44	3.42	4.33	5.49	7.63
03		cm3/rev.	28	40	56	71	90	125

Dispositivo de control

				28	40	56	71	90	125
04	Sin módulo de control			●	●	●	●	●	●	NV
	Control proporcional, hidráulico	Pilot-pressure related p = 87 to 260 psi (6 to 18 bar)		○	○	●	●	●	●	HD3
	Control proporcional, hidráulico	Servomecánico		●	●	●	●	●	●	HW
	Control proporcional, eléctrico		U=12V	●	●	●	●	●	●	EP3
	Control proporcional, eléctrico		U=24V	●	●	●	●	●	●	EP4
	Control de dos puntos, eléctrico		U=12V	●	●	●	●	●	●	EZ1
	Control de dos puntos, eléctrico		U=24V	●	●	●	●	●	●	EZ2
	Control automático, relacionado con la velocidad		U=12V	●	●	●	●	●	●	DA1
	Control automático, relacionado con la velocidad		U=24V	●	●	●	●	●	●	DA2
	Hydraulic control, direct operated			○	○	●	●	●	●	DG
	Control eléctrico, de operación directa, dos válvulas reductoras de presión		U=12V	●	●	●	●	-	-	ET5
			U=24V	●	●	●	●	-	-	ET6

Corte por presión

Pressure cut-off (standard)

Interruptor de posición neutral

06	Sin interruptor de posición neutral (sin código)	●
06	Interruptor de posición neutral (solo para control de hardware)	●	L

Limitador de carrera mecánico

07	Sin limitador de carrera mecánico (sin código)	●
07	Limitador de carrera mecánico, ajustable externamente	●	M

Puerto de presión de la cámara de carrera

		28	40	56	71	90	125
08	\|Without stroking chamber pressure port X₃, X₄ (without code)	●	●	●	●	●	●
08	Puerto de presión de la cámara de carrera X₃, X₄	○	○	●	●	●	●	T

Válvula de control DA

			NV	HD	HW	DG	DA	EP	Fácil
09	Sin válvula de control DA		●	●	●	●	-	●	●	1
	válvula de control DA, ajuste fijo			●	●	●	●	●	-	2
	DA control valve, mechanically adjustable with position lever	sentido de accionamiento, en sentido horario	-	●	●	●	●	●	-	3R
		dirección de accionamiento, en sentido contrario a las agujas del reloj	-	●	●	●	●	●	-	3L
	Válvula de control DA, ajuste fijo, conexiones para dispositivo de control piloto		-	○	○	-	○	○	-	7
	DA control valve, fixed setting and brake inch valve mounted, control with brake fluid	a base de aceite mineral	-	-	-	-	●	-	-	8

•= available ○= on request -= not available = programa preferido

Series

Serie 3, índice 2

Sentido de giro

11	Visto en el árbol de transmisión	en el sentido de las agujas del reloj	R
		en sentido contrario a las agujas del reloj	L

Material de sellado

NBR (nitrile rubber), shaft seal in FKM (fluoroelastomer)

Árbol de transmisión

			28	40	56	71	90	125
13	Eje ranurado ANSIB92.1a	para bomba única	●	●	●	●	●	●	S
		for combination pump - 1st pump	_1)	_1)	●	●	_1)	●	T
		only for combination pump -2nd pump	-	●	-	-	●	-	U

Brida de montaje

			28	40	56	71	90	125
14	SAEJ744	de 2 agujeros	●	●	●	-	-	-	C
14	SAEJ744	de 2+4 orificios	-	-	-	●	●	●	F

Puerto de trabajo

			28	40	56	71	90	125
15	SAE working port A and B, top and bottom	Puerto de succión S inferior	-	●	●	●	●	●	52
	SAE working port A and B, top and bottom	Puerto de succión S superior	-	○	●	-	-	○	53
	SAE working port A and B, same side right²⁾	Puerto de succión S inferior	●	-	-	-	-	-	60
	SAE working port A and B, same side left²⁾	Puerto de succión S inferior	-	-	-	●	-	-	60
	SAE working port A and B, same side right²⁾	Puerto de succión S superior	-	-	-	-	-	○	63

Boost pump

16	Sin bomba de refuerzo integrada	sin unidad de paso	N
	Sin bomba de refuerzo integrada	con transmisión directa	K
	Bomba de refuerzo integrada	con y sin paso directo	F

Through drives³⁾

			28	40	56	71	90	125
17	Without through drive, versions N and F (no. 16) only		●	●	●	●	●	●	00
	Brida SAE J744⁴⁾	Cubo para eje ranurado
	82-2 (A)	5/8 en 9T 16/32DP⁵⁾	●	●	●	●	●	●	01
	101-2 (B)	7/8 de pulgada a 13 dientes 16/32 DP⁵⁾	●	●	●	●	●	●	02
	101-2 (B)	1in 15T 16/32DP⁵⁾	●	●	●	●	●	●	04
	127-2 (C)⁶⁾	1 1/4 in 14T 12/24DP⁵⁾	-	-	●	●	●	●	07
	152-2/4 (D)	13/4 in 13T 8/16DP⁵⁾	-	-	-	-	-	●	69

•= available ○= on request -= not available = programa preferido

1) Standard for combination pump - 1st pump: Shaft S

2) Only possible without attachment filter

3) Specifications for version with integrated boost pump, please contact us for version without boost pump

4) 2 = 2-hole; 4 = 4-hole

5) Cubo para eje ranurado según ANSI B92.1a

6) NG90 to 125 with additional 4-hole-flange (127-4)

Válvula de alivio de alta presión

		Setting range Δp		28	40	56	71	90	125
18	High pressure relief valve, pilot operated	1450 to 6100 psi (100 to 420 bar)	con bypass	-	-	-	●	●	●	1
	High-pressure relief valve, direct operated, fixed setting	3600 to 6100 psi (250 to 420 bar)	sin desvío	●	●	●	-	-	-	3
		3600 to 6100 psi (250 to 420 bar)	con bypass	●	●	●	-	-	-	4
		1450 to 3600 bar (100 to 250 bar)	sin desvío	●	●	●	-	-	-	5
		1450 to 3600 bar (100 to 250 bar)	con bypass	●	●	●	-	-	-	6

Circuito de refuerzo de filtración / suministro de presión de refuerzo externa

		28	40	56	71	90	125
19	Filtración en la línea de succión de la bomba de refuerzo	●	●	●	●	●	●	S
	Filtración en la línea de presión de la bomba de refuerzo Ports for external boost circuit filtration (F_e y F_a)	●	●	●	●	●	●	D
	Mounted cold start valve and ports for external boost circuit filtration	-	●	●	-	-	-	K
	Filtro de acoplamiento con válvula de arranque en frío	-	●	●	●	●	●	F
	Attachment filter with cold start valve and visual contamination indicator	-	●	●	●	●	●	P
	Attachment filter with cold start valve and electric contamination indicator	-	●	●	●	●	●	B
	External boost pressure supply (version without integrated boost pump - NO0, K...)	●	●	●	●	●	●	E

Sensor de ángulo de giro

		28	40	56	71	90	125
20	Sin sensor de ángulo de giro (sin código)	●	●	●	●	●	●
20	Sensor de ángulo de giro eléctrico⁷⁾	○	○	●	○	○	○	R

Conector para solenoides⁸⁾

21	Without connector (without code), only for purely hydraulic control		●
	DEUTSCH molded connector, 2-pin	sin diodo de supresión	●	P
	DEUTSCH molded connector, 2-pin	with suppressor diode (only for EZ and DA)	●	Q

Standard / special version

22	Versión estándar	sin código
	Versión estándar	combined with attachment part or attachment pump	-K
	Special version		-S
	Special version	combined with attachment part or attachment pump	-SK

•= available ○= on request -= not available = programa preferido

Aviso

▶Note the project planning notes on page 68.

▶In addition to the type code, please specify the relevant technical data when placing your order.

7)Please contact us if the swivel angle sensor is used for control

8) Connectors for other electric components may deviate

Datos técnicos

Tamaño				NG	28	40	56	71	90	125
Desplazamiento geométrico por revolución			V_{g ma}_x	in³	1.71	2.44	3.42	4.33	5.49	7.63
	variable pump		V_{g ma}_x	cm³	28	40	56	71	90	125
	boost pump (at p = 290 psi (20 bar))		V_g_Sp	in³	0.37	0.52	0.71	1.20	1.20	1.73
	boost pump (at p = 290 psi (20 bar))		V_g_Sp	cm³	6.1	8.6	11.6	19.6	19.6	28.3
Rotational speed¹⁾	maximum at V_{G máximo}		n_Nombre	rpm	4250	4000	3600	3300	3050	2950
	limited, maximum²⁾		n_max1	rpm	4500	4200	3900	3600	3300	3250
	intermittent, maximum³⁾		n_max2	rpm	5000	5000	4500	4100	3800	3450
	minimum		n_min	rpm	500	500	500	500	500	500
Flujo	at n_Nombre y V_{G máximo}		q_v	gpm	31.4	42.3	53.4	61.8	72.6	94
Flujo	at n_Nombre y V_{G máximo}		q_v	l/min	119	160	202	234	275	356
Poder⁴⁾	at n_Nombre, V_{G máximo}and	Δp = 5800 psi	P	hp	106	143	180	209	245	319
Poder⁴⁾	at n_Nombre, V_{G máximo}and	Δp =400 bar	P	kW	79	107	134	156	183	238
Par de torsión⁴⁾	at V_{G máximo}and	Δp =5800 psi	T	Ib-ft	131	188	263	333	423	587
		Δp =400 bar	T	Nm	178	255	357	452	573	796
		Ap =1450 psi	T	lb-ft	33	47	66	83	105	147
		Ap =100 bar	T	Nm	45	64	89	113	143	199
Rotary stiffness of drive shaft		S	c	lb-ft/rad	23159	50892	59595	72871	116609	161010
		S	c	kNm/rad	31.4	69	80.8	98.8	158.1	218.3
		T	c	lb-ft/rad	-	-	70068	89171	-	185939
		T	c	kNm/rad	-	-	95	120.9	-	252.1
		U	c	lb-ft/rad	-	37468	-	-	79362	-
		U	c	kNm/rad	-	50.8	-	-	107.6	-
Momento de inercia para el grupo rotativo			J_TW	lbs-ft²	0.0522	0.0902	0.1566	0.2302	0.3536	0.5505
Momento de inercia para el grupo rotativo			J_TW	kgm²	0.0022	0.0038	0.0066	0.0097	0.0149	0.0232
Aceleración angular máxima⁵⁾			α	rad/s²	38000	30000	24000	21000	18000	14000
Volumen de casos			V	gal	0.24	0.29	0.40	0.34	0.40	0.55
Volumen de casos			V	I	0.9	1.1	1.5	1.3	1.5	2.1
Weight (without through drive) approx.			m	Ibs	64	68	84	110	132	176
Weight (without through drive) approx.			m	Kg	29	31	38	50	60	80

Aviso

▶Valores teóricos, sin eficiencia ni tolerancias; valores redondeados

▶Operation above the maximum values or below the minimum values may result in a loss of function, a reduced service life or in the destruction of the axial piston unit. Bosch Rexroth recommend testing the loads by means of experiment or calculation / simulation and comparison with the permissible values.

Determinación de las características de funcionamiento

Flujo	q_v=(V_g∙ n ∙ η_v) /231	gpm	(V_g∙ n ∙ η_v) / 1000	l/min
Par de torsión	T=(V_g ∙ Δp) /(24 ∙ π ∙ η_h_m)	lb-ft	(V_g ∙ Δp) /(24 ∙ π ∙ η_h_m)	Nm
Poder	P=(2π ∙ T ∙ n)/33000=(q_v∙ Δp)/(1714 ∙ η_t)	HP	(2π ∙ M ∙ n)/60000=(q_v∙ Δp∙ η_t)/600	kW

Clave

V_g Displacement per revolution [in³(cm³)]

Δp Differential pressure [psi(bar)]

n Velocidad de giro [rpm]

η_v Eficiencia volumétrica

η_h_m Rendimiento hidráulico-mecánico

η_t Eficiencia total (η_t= η_v*η_hm)

1)The values are applicable:

- for the optimum viscosity range from Vopt = 170 to 82 SUS(36 to 16 mm2/s)

- for hydraulic fluid based on mineral oils (for HF hydraulic fluids,observe the technical data in 90225)

2)Valid at half corner power (e.g. at V_{G máximo} and p_N/2)

3) Valid at Δp = 1000 to 2200 psi (70 to 150 bar) or Δp < 4350 psi(300 bar) and t < 0.1 s

4)Without boost pump

5)The data are valid for values between the minimum required and maximum permissible rotational speed.

Valid for external excitation (e.g. diesel engine 2 to 8 times rotary frequency, cardan shaft twice the rotary frequency).

The limit value is only valid for a single pump.

The load capacity of the connecting parts must be considered.

Permissible radial and axial forces on the drive shaft

▼Splined shaft ANSI B92.1a

Tamaño	NG		28	40	40	56	56	71
Árbol de transmisión		in	1	1	1 1/4	1 1/4	1 3/8	1 1/4
Maximum radial force at distance a(from shaft collar)	F_qmáx	lbf	671	958	766	1073	975	1360
	F_qmáx	N	2983	4261	3409	4772	4338	6050
	a	in	0.75	0.75	0.94	0.94	0.94	0.94
	a	mm	19	19	24	24	24	24
Maximum axial force	+F_{ax max}	lbf	350	477	477	654	654	954
	+F_{ax max}	N	1557	2120	2120	2910	2910	4242
	-F_{ax max}	lbf	94	198	198	355	355	620
	-F_{ax max}	N	417	880	880	1490	1490	2758

Tamaño	NG		71	90	90	125	125
Árbol de transmisión		in	1 3/8	1 1/4	1 3/4	1 3/4	2
Maximum radial force at distance a(from shaft collar)	F_qmáx	lbf	1236	1724	1232	1711	1497
	F_qmáx	N	550	7670	5478	7609	6658
	a	in	0.94	0.94	1.32	1.32	1.57
	a	mm	24	24	33.5	33.5	40
Maximum axial force	+F_{ax max}	lbf	954	973	973	1361	1361
	+F_{ax max}	N	4242	4330	4330	6053	6053
	-F_{ax max}	lbf	620	600	600	797	797
	-F_{ax max}	N	2758	2670	2670	3547	3547

Aviso

▶The axial and radial forces generally influence the service life of the bearings.

▶Special requirements apply in the case of belt drive and cardan shaft. Please contact u

Tamaño			NG		28	40	56	71	90	125
Torque at Vg max and	Δp = 5800 psi¹⁾		T	lb-ft	131	188	263	333	423	587
Torque at Vg max and	Δp = 400 bar¹⁾		T	Nm	178	255	357	452	573	796
Maximum input torque at drive shaft²⁾ ANSI B92.1a (SAE J744)		S	T_E_máx	lb-ft	232	444	444	444	1210	1210
				Nm	314	602	602	602	1640	1640
				in	1	1 1/4	1 1/4	1 1/4	1 3/4	1 3/4
		T	T_E_máx	lb-ft	-	-	715	715	-	1969
				Nm	-	-	970	970	-	2670
				in	-	-	1 3/8	1 3/8	-	2
		U³⁾	T_E_máx	lb-ft	-	232	-	-	444	-
				Nm	-	314	-	-	602	-
				in	-	1	-	-	1 1/4	-
Maximum through-drive torque⁴⁾			T_D_máx	lb-ft	170	232	384	487	606	819
Maximum through-drive torque⁴⁾			T_D_máx	Nm	231	314	521	660	822	1110

Distribution of torques

Torque at 1st pump	T₁
Torque at 2nd pump	T₂
Torque at 3rd pump	T₃
Input torque	T_E=T₁₊T₂₊T₃
Input torque	T_E< T_{E max}
Through∙drive torque	T_D=T₂₊T₃
Through∙drive torque	T_D< T_{D max}

1) Efficiency not considered

2) For drive shafts free of radial force

3) Shaft "U" is only permitted as drive shaft on the 2nd pump on a combination pump of the same size.

4)Note maximum input torque for shaft S!

Closed Loop Variable Displacement Piston Pump AA4VG

Descripción detallada

Selección y solicitud de cotización

Información que debe incluir en su RFQ

Recursos relacionados

Escribe código

Unidad de pistones axiales

Modo de operación

Tamaño (NG)

Dispositivo de control

Corte por presión

Interruptor de posición neutral

Limitador de carrera mecánico

Puerto de presión de la cámara de carrera

Válvula de control DA

Series

Sentido de giro

Material de sellado

Árbol de transmisión

Brida de montaje

Puerto de trabajo

Boost pump

Through drives3)

Circuito de refuerzo de filtración / suministro de presión de refuerzo externa

Sensor de ángulo de giro

Conector para solenoides8)

Standard / special version

Aviso

Datos técnicos

Aviso

Determinación de las características de funcionamiento

Clave

Permissible radial and axial forces on the drive shaft

Aviso

Distribution of torques

Through drives³⁾

Conector para solenoides⁸⁾