Home / Products / Hydraulic Pump / Piston Pump / A4VG Series A4VG28 A4VG40 A4VG56 A4VG71 A4VG90 A4VG125 A4VG140 A4VG180 A4VG250 Hydraulic Axial Piston Variable Pump

A4V A4V40 A4V56 A4V71 A4V90 A4V125 A4V250 Hydraulic Axial Piston Hydraulic Variable Displacement Pump

A4VG Series A4VG28 A4VG40 A4VG56 A4VG71 A4VG90 A4VG125 A4VG140 A4VG180 A4VG250 Hydraulic Axial Piston Variable Pump

A4VG Series A4VG28 A4VG40 A4VG56 A4VG71 A4VG90 A4VG125 A4VG140 A4VG180 A4VG250 Hydraulic Variable Displacement Piston Pump

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Product Description

A4VG Series A4VG28 A4VG40 A4VG56 A4VG71 A4VG90 A4VG125 A4VG140 A4VG180 A4VG250 Hydraulic Axial Piston Variable Pump
Data sheet
Series			32
Size			28 to 250
Nominal pressure			400 bar
Maximum pressure			450 bar
Features
– Variable axial piston pump of swashplate design for hydrostatic drives in closed circuit.
– The flow is proportional to the drive speed and displacement.
– The flow can be infinitely varied by adjusting the swashplate angle.
– Flow direction changes smoothly when the swashplate is moved through the neutral position.
– A wide range of highly adaptable control devices with different control and regulating functions, for all important applications.
– Two pressure-relief valves are provided on the high-pressure side to protect the hydrostatic transmission (pump and motor) from overload.
– The high-pressure relief valves also function as boost valves.
– The integrated boost pump acts as a feed pump and control pressure supply.
– The maximum boost pressure is limited by a built-in lowpressure relief valve.
– As standard with integrated pressure cut-off

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

Size		NG		28	40	56	71	90	125	180	250
Displacement geometric, per revolution
variable pump		V_g_max	cm3	28	40	56	71	90	125	180	250
boost pump (at p = 20 bar)		V_{g Sp}	cm3	6.1	8.6	11.6	19.6	19.6	28.3	39.8	52.5
Speed
maximum at V_g _max		n_nom	rpm	4250	4000	3600	3300	3050	2850	2500	2400
limited maximum		n_max	rpm	4500	4200	3900	3600	3300	3250	2900	2600
intermittent maximum		n_max	rpm	5000	5000	4500	4100	3800	3450	3000	2700
minimum		n_min	rpm	500	500	500	500	500	500	500	500
Flow
at n_nom and V_g _max		q_v	L/min	119	160	202	234	275	356	450	600
Power
at n_nomV_g _max and	Dp = 400 bar	P	kW	79	107	134	156	183	238	300	400
Torque
at V_g _max and	Dp = 400 bar	T	Nm	178	255	357	452	573	796	1146	1592
at V_g _max and	Dp = 100 bar Nm	T	Nm	45	64	89	113	143	199	286	398
Rotary stiffness drive shaft	S	c	kNm/rad	31.4	69	80.8	98.8	158.1	218.3	244.5	354.5
	T	c	kNm/rad	–	–	95	120.9	–	252.1	318.4	534.3
	A	c	kNm/rad	–	79.6	95.8	142.4	176.8	256.5	–	–
	Z	c	kNm/rad	32.8	67.5	78.8	122.8	137	223.7	319.6	624.2
	U	c	kNm/rad	–	50.8	–	–	107.6	–	–	–
Moment of inertia for rotary group		J_GR	kgm²	0.0022	0.0038	0.0066	0.0097	0.0149	0.0232	0.0444	0.0983
Maximum angular acceleration		α	rad/s²	38000	30000	24000	21000	18000	14000	11000	6700
Case volume		V	L	0.9	1.1	1.5	1.3	1.5	2.1	3.1	6.3
Mass approx. (without through drive)		m	kg	29	31	38	50	60	80	101	156
Center of gravity		X	mm	< 5	< 5	< 5	< 5	< 5	< 5	< 5	< 5
		Y	mm	24	20	20	15	20	30	33	30
		Z	mm	105	112	106	135	145	160	180	203

Permissible input and through-drive torques

Size		NG		28	40	56	71	90	125	180	250
Torque at V_g _max and Dp = 400 bar		T	Nm	178	255	357	452	573	796	1146	1592
Input torque at drive shaft, maximum
DIN 5480	Z	TE max	Nm	352	522	522	912	912	1460	3140	4350
	Z	TE max	Nm	W25	W30	W30	W35	W35	W40	W50	W55
	A	TE max	Nm	–	912	912	1460	2190	2190	–	–
	A	TE max	Nm		W35	W35	W40	W45	W45
ANSI B92.1a (SAE J744)	S	TE max	Nm	314	602	602	602	1640	1640	1640	1640
	S	TE max	Nm	1 in	1 1/4 in	1 1/4 in	1 1/4 in	1 3/4 in	1 3/4 in	1 3/4 in	1 3/4 in
	T	TE max	Nm	–	–	970	970	–	2670	4070	4070
	T	TE max	Nm			1 3/8 in	1 3/8 in		2 in	2 1/4 in	2 1/4 in
	U	TE max	Nm	–	314	–	–	602	–	–	–
	U	TE max	Nm		1 in			1 1/4 in
Maximum through-drive torque		TD max	Nm	231	314	521	660	822	1110	1760	2230

Ordering code for standard program：

A4VG： Axial piston unit

28 or 40 or 56 or 71 or 90 or 125 or 180 or 250： displacement

NV or HD3 or HW or EP3 or EP4 or EZ1 or EZ2 or DA1 or DA2 or DG： Control devices

NV：Without control module

HD3：Proportional control hydraulic：pilot-pressure related p = 6 to 18 bar

HW：Proportional control hydraulic：mechanical servo

EP3：Proportional control electric：U = 12 V DC

EP4：Proportional control electric：U = 24 V DC

EZ1：Two-point control electric：U = 12 V DC

EZ2：Two-point control electric：U = 24 V DC

DA1：Automatic control speed-related：U = 12 V DC

DA2：Automatic control speed-related：U = 24 V DC

DG：Hydraulic control, direct controlled

D： Pressure cut-off (standard)

L： Neutral position switch

M： Mechanical stroke limiter

T： Ports X3, X4 for stroking chamber pressure

1 or 2 or 3R or 3L or 4 or 8 or 7： DA control valve

1：Without DA control valve

2：DA control valve fixed setting

3R：DA control valve mechanically adjustable, with position lever：actuating direction right

3L：DA control valve mechanically adjustable, with position lever：actuating direction left

4：DA control valve fixed setting and braking inch valve mounted, control with brake fluid：according to ISO 4925, no mineral oil

8：DA control valve fixed setting and braking inch valve mounted, control with brake fluid：based on mineral oil

7：DA control valve fixed setting, ports for pilot control device

32： Series 3, index 2

R or L： Viewed on drive shaft：R：clockwise；L：counter-clockwise

N： NBR (nitrile-caoutchouc), shaft seal in FKM (fluor-caoutchouc)

Z or A or S or T or U： Drive shafts

Z：Splined shaft DIN 5480：for single pump

A：Splined shaft DIN 5480：for combination pump – 1st pump

S：Splined shaft ANSI B92.1a：for single pump

T：Splined shaft ANSI B92.1a：for combination pump – 1st pump

U：Splined shaft ANSI B92.1a：Only for combination pump – 2nd pump

C or D or F： Mounting flanges：SAE J744

C：2-hole

D：4-hole

F：2+4-hole

02 or 03 or 10 or 13： Service line ports

02：SAE flange ports A and B, top and bottom，suction port S ：bottom

03：SAE flange ports A and B, top and bottom，suction port S：top

10：SAE flange ports A and B, same side，right：suction port S ：bottom

13：SAE flange ports A and B, same side，left：suction port S：top

N00 or K or F00 or F： Boost pump

N00：Without integrated boost pump：without through drive

K：Without integrated boost pump：with through drive

F00：Integrated boost pump：without through drive

F：Integrated boost pump：with through drive

01 or 02 or 04 or 09 or 07 or 73 or 69 or 72： Through drives：Flange SAE J744，Coupling for splined shaft

01：82-2 (A)，5/8 in，9T 16/32DP

02：101-2 (B)，7/8 in，13T 16/32DP

04：101-2 (B)，1 in，15T 16/32DP

09：127-2 (C)，1 in，15T 16/32DP

07：127-2 (C)，1 1/4 in，14T 12/24DP

73：152-2/4 (D)，W35，2x16x9g

69：152-2/4 (D)，1 3/4 in，13T 8/16DP

72：165-4 (E)，1 3/4 in，13T 8/16DP

1 or 3 or 5 or 4 or 6： Valves

1：High-pressure relief valve, pilot operated，Setting range ∆p：100 to 420 bar，with bypass

3：High-pressure relief valve direct controlled, fixed setting，Setting range ∆p：250 to 420 bar，w/o bypass

5：High-pressure relief valve direct controlled, fixed setting，Setting range ∆p：250 to 420 bar，with bypass

4：High-pressure relief valve direct controlled, fixed setting，Setting range ∆p：100 to 250 bar，w/o bypass

6：High-pressure relief valve direct controlled, fixed setting，Setting range ∆p：100 to 250 bar，with bypass

S or D or K or F or P or B or E： Filtration boost circuit / external supply

S：Filtration in the boost pump suction line

D：Filtration in the boost pump pressure line：Ports for external boost circuit filtration (Fe and Fa)

K：Filtration in the boost pump pressure line：Ports for external boost circuit filtration：and cold start valve

F：Filtration in the boost pump pressure line：Filter mounted with cold start valve

P：Filtration in the boost pump pressure line：Filter mounted with cold start valve and contamination indica tor through：inspection window

B：Filtration in the boost pump pressure line：Filter mounted with cold start valve and contamination indica tor through：electric signa

E：External supply (on version without integrated boost pump – N00, K...)

R： Electric swivel angle sensor mounted

P or Q： DEUTSCH molded connector, 2-pin

P：without suppressor diode

Q：with suppressor diode (only for EZ and DA

-K or -S or -SK： Standard / special version

-K：Standard version：combined with attachment part or attachment pump

-S：Special version

-SK：Special version：combined with attachment part or attachment pump

A complete model, for example：A4VG71DA1D2/32R-NZF02F021SP-S

1 (5) 1 (6) 1 (1)

Jenny

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