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Home > Hydraulics> Hydraulic Pump> Piston Pump > Axial Piston Fixed Pump Or Motor HD-A2FE

Axial Piston Fixed Pump Or Motor HD-A2FE

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1.Sizes 28～355; Series 6; Nominal pressure 400 bar; Maximum pressure 450 bar
2.Fixed plug-in motor with axial tapered piston rotary group of bent-axis design, for hydrostatic drives in open and closed circuits.
3.Far-reaching integration in mechanical gearbox due to recessed mounting flange located in the center of the case
4.Small dimensions,High total efficiency,Complete unit,ready-assembled and tested,Easy to install,simply plug into the mechanical gearbox
5.No configuration specifications to be observed when installing.

HD-A2FE

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BEIJING HUADE HYDRAULIC INDUSTRIAL GROUP CO.,LTD

Since:

1979

Size	ΦA1	ΦA2	A3 1)	A4	A5	A6	A7	A8	A9	A10	A11	A12	A13	Φ14	A15
28 , 32	135-0.025	94-0.5	88.8	15	16	94	114	95	87.1	45	27	91	106	106	5.2
45	160-0.025	117+1.5 2	92.3	15	18	109	133	106	90	50	31.3	102	119	118	5.2
56 , 63	160-0.025	121-0.5	92.3	15	18	122	146	109	90	59	34	107	130	128	5.2
80 , 90	190-0.029	140.3 0.5	110	15	20	127	157	123	106	54	41	121	145	138	5.2
107 , 125	200-0.029	152.3 0.5	122.8	15	20	143	178	135	119	58	41	136	157	150	5.2
160 , 180	200-0.029	171.6 0.5	122.8	15	20	169	206	134	119.3	75	47	149	185	180	5.2

Size	B1	B2	ΦB3	B4...DIN 13 2)	B5	B6	B7	C1	ΦC2	C3	ΦC4	C5	C6	C7
28 , 32	40.5	18.2	13	M8 x 1.25 deep 15	59	115	40	188	154	160	14	71	42	13
45	50.8	23.8	19	M10 x 1.5 deep 17	75	147	49	235	190	200	18	82	47.5	15
56 , 63	50.8	23.8	19	M10 x 1.5 deep 17	75	147	48	235	190	200	18	82	36	0
80 , 90	57.2	27.8	25	M12 x 1.75 deep 17	84	166	60	260	220	224	22	98	40	0
107 , 125	66.7	31.8	32	M14 x 2 deep 19	99	194	70	286	232	250	22	103	40	0
160 , 180	66.7	31.8	32	M14 x 2 deep 19	99	194	70	286	232	250	22	104	42	0

Size	R1	O ring3)	Working port A, B …SAE J518	Drain port T 1...DIN 3852 2)
28 , 32	10	126 x 4	1/2”	M16 x 1.5 deep 12
45	10	150 x 4	3/4”	M18 x 1.5 deep 12
56 , 63	10	150 x 4	3/4”	M18 x 1.5 deep 12
80 , 90	10	180 x 4	1”	M18 x 1.5 deep 12
107 , 125	16	192 x 4	1- 1/4”	M18 x 1.5 deep 12
160 , 180	12	192 x 4	1- 1/4”	M22 x 1.5 deep 14

Note:1) To shaft colla 2) For the maximum tightening torques the general instructions must be observed. 3) Not included in the delivery contents

Size	Splined shaft … DIN 5480	W1 1)	W2	W3	ΦW4	W5	W6
28 , 32	A W30 x 2 x 14 x 9g	M10 x 1.5	7.5	22	35	27	35
28	Z W25 x 1.25 x 18 x 9g	M8 x 1.25	6	19	35	28	43
45	Z W30 x 2 x 14 x 9g	M12 x 1.75	9.5	28	35	27	35
56 , 63	A W35 x 2 x 16 x 9g	M12 x 1.75	9.5	28	40	32	40
56	Z W30 x 2 x 14 x 9g	M12 x 1.75	9.5	28	40	27	35
80 , 90	A W40 x 2 x 18 x 9g	M16 x 2	12	36	45	37	45
80	Z W35 x 2 x 16 x 9g	M12 x 1.75	9.5	28	45	32	40
107 , 125	A W45 x 2 x 21 x 9g	M16 x 2	12	36	50	42	50
107	Z W40 x 2 x 18 x 9g	M12 x 1.75	9.5	28	50	37	45
160 , 180	A W50 x 2 x 24 x 9g	M16 x 2	12	36	60	44	55
160	Z W45 x 2 x 21 x 9g	M16 x 2	12	36	60	42	50

Ports	Port for	Standard	Size 3)	P Max [bar] 4)	State 8)
A , B	Working port Fastening thread	SAE J518 6) DIN 13	1- 1/4” M14 x 2deep 19	450
T 1	Drain port	DIN 3852 5)	M22 x 1.5 deep 14	3	X 7)
T 2	Drain port	DIN 3852 5)	M22 x 1.5 deep 14	3	O 7)

Note

1) To shaft colla

2) Center bore according to DIN 332 (thread according to DIN 13)

3) For the maximum tightening torques the general instructions must be observed .

4) Momentary pressure spikes may occur depending on the application. Keep this in mind when selecting measuring devices and fittings.

5) The spot face can be deeper than specified in the appropriate standard

6) Only dimensions according to SAE J518, metric fastening thread is a deviation from standard.

7) Depending on the installation position, T1 or T2 must be connected

8) O = Must be connected (plugged on delivery) X = plugged (in normal operation)

Ports	Port for	Standard	Size 3)	P Max [bar] 4)	State 8)
A , B	Working port Fastening thread	SAE J518 6) DIN 13	1- 1/4” M14 x 2 deep 22	400
T 1	Drain port	DIN 3852 5)	M33 x 2 deep 18	3	X 7)
T 2	Drain port	DIN 3852 5)	M33 x 2 deep 18	3	O 7)
M A, MB	Measuring workting pressure	DIN 3852 5)	M14 x 1.5 deep 12	400	X

Note

1) To shaft colla

2) Center bore according to DIN 332 (thread according to DIN 13)

3) For the maximum tightening torques the general instructions must be observed .

4) Momentary pressure spikes may occur depending on the application. Keep this in mind when selecting measuring devices and fittings.

5) The spot face can be deeper than specified in the appropriate standard

6) Only dimensions according to SAE J518, metric fastening thread is a deviation from standard.

7) Depending on the installation position, T1 or T2 must be connected

8) O = Must be connected (plugged on delivery) X = plugged (in normal operation)

HD-A2FE Axial Piston Fixed Motor Attachment

Size	Code	D1	D2	D3	D4	D5	D6	D7	D8	D9	D10	D11	D12	D132)
28 , 32	MHDB16	209	186	25	68	174	102	87	36	66	50.8	23.8	Φ19	M10 deep 17
45	MHDB16	222	198	22	65	187	113	98	36	66	50.8	23.8	Φ19	M10 deep 17
56 , 63	MHDB22	250	222	19	61	208	124	105	42	75	50.8	23.8	Φ19	M10 deep 13
80 , 90	MHDB22	271	243	17.5	59	229	134	114	42	75	57.2	27.8	Φ25	M12 deep 18
107 , 125	MHDB32	298	266	10	52	250	149.5	130	53	84	66.7	31.8	Φ32	M14 deep 19
160 , 180	MHDB32	332	301	5	47	285	170	149	53	84	66.7	31.8	Φ32	M14 deep 19

Size	Port A ,B	S11)	M A, M B1)	P St1)
28 , 32	3/4”	M22 x 1.5 deep 14	M20 x 1.5 deep 14	G1/4”	Assembly instructions for port plate with pressure boost facility "192"The lock nut must be counterheld when installing the hydraulic line at the pst port
45	3/4”	M22 x 1.5 deep 14	M20 x 1.5 deep 14	G1/4”
56 , 63	3/4”	M26 x 1.5 deep 16	M26 x 1.5 deep 16	G1/4”
80 , 90	1”	M26 x 1.5 deep 16	M26 x 1.5 deep 16	G1/4”
107 , 125	1- 1/4”	M26 x 1.5 deep 16	M26 x 1.5 deep 16	G1/4”
160 , 180	1- 1/4”	M26 x 1.5 deep 16	M30 x 1.5 deep 16	G1/4”

Ports	Port for	Standard	Size 1)	P Max [bar] 2)	State 3)
A , B	Working port	SAE J518	See above	450	O
S1	Supply port (only with port plate 191/192)	DIN 3852	See above	5	O
M A, M B	Measuring operating pressure port	DIN 3852	See above	450	X
P St	Pilot pressure port (only with port plate 192)	DIN/ISO 228	See above	30	O

Note

1) For the maximum tightening torques the general instructions must be observed .

2) Momentary pressure spikes may occur depending on the application. Keep this in mind when selecting measuring devices and fittings.

3) O = Must be connected (plugged on delivery) X = plugged (in normal operation)

Counterbalance valve BVD and BVE

Travel drive/winch counterbalance valves are designed to reduce the danger of overspeeding and cavitation of axial piston motors

in open circuits. Cavitation occurs if the motor speed is greater than it should be for the given input flow while braking, travelling downhill, or lowering a load.

If the inlet pressure drops, the counterbalance spool throttles the return flow and brakes the motor until the inlet pressure returns to approx. 20 bar

BVD available for sizes 28 to 180 and BVE available for sizes 107 to 180

The counterbalance valve must be ordered additionally. We recommend ordering the counterbalance valve and the motor as a set. ordering example

HD-A2FE90/61W - VAB188 + BVD20F27S/41B - V03K16D0400S12

Note

The counterbalance valve does not replace the mechanical service brake and park brake.

Observe the detailed notes on the BVD counterbalance valve and BVE counterbalance valve.

For the design of the brake release valve, we must know for the mechanical park brake the pressure at the start of opening

The volume of the counterbalance spool between minimum stroke (brake closed) and maximum stroke (brake released with 21 bar)

The required closing time for a warm device (oil viscosity approx. 15 mm2/s)

Motor	Without valve		Restricted values in operation with DBV				Restricted values in operation with BVD/BVE
HD-A2FE	Pnom/Pmax	qv max	DBV	Pnom/Pmax	qv max	Plate	BVD/BVE	Pnom/Pmax	qv max	Plate
Size	bar	I/min	size	bar	I/min	Code	size	bar	I/min	Code
28	400/450	176	16	350/420	100	181 191 , 192	20 BVD	350/420	100	188
32		201
45		255
56		280	22		240				220
63		315
80		360
90		405
107		427				171,191 , 192				178
125		500				171,191 , 192				178
107		427	32		400	181,191 , 192	25 BVD/BVE		320	188

HD-A2FE Axial Piston Fixed Motor Attachment .png

A2FM	Counterbalance valve		Dimensions in mm
Size	Type	Port A, B	B1	B2	B3	B4(S)	B4(L)	B5	B6	B7
28 , 32	BVD20 … 16	3/4”	209	175	174	142	147	139	98	66
45	BVD20 … 16	3/4”	222	196	187	142	147	139	98	66
56 , 63	BVD20 … 17	3/4”	250	197	208	142	147	139	98	75
80 , 90	BVD20 …27	1”	271	207	229	142	147	139	98	75
107 , 125	BVD20 …28	1”	298	238	251	142	147	139	98	84
107 , 125	BVD25 …38	1- 1/4”	298	239	251	158	163	175	120.5	84
160 , 180	BVD25 …38	1- 1/4”	332	260	285	158	163	175	120.5	84
107 , 125	BVE25 … 38	1- 1/4”	298	240	251	167	172	214	137	84
160 , 180	BVE25 … 38	1- 1/4”	332	260	285	167	172	214	137	84
250	On request

Ports	Port for Version	Standard	Size 1)	P Max [bar] 2)	State4)
A , B	Working port	SAE J518	See above	420	O
S	Infeed BVD20 BVD25, BVE25	DIN 3852 3)	M22 x 1.5 deep 14	30	X
S	Infeed BVD20 BVD25, BVE25	DIN 3852 3)	M27 x 2 deep 16	30	X
Br	Brake release,reduce high pressure L	DIN 3852 3)	M12 x 1.5 deep 12.5	30	O
Gext	Brake release,high pressure S	DIN 3852 3)	M12 x 1.5 deep 12.5	420	X
M A, MB	Measuring pressure A, B	ISO 6149 3)	M12 x 1.5 deep 12	420	X

Note

1) For the maximum tightening torques the general instructions must be observed.

2) Momentary pressure spikes may occur depending on the application. Keep this in mind when selecting measuring devices and fittings.

3) The spot face can be deeper than specified in the appropriate standar

4) O = Must be connected (plugged on delivery) X = plugged (in normal operation)

HD-A2FE Axial Piston Fixed Motor Attachment .png

Technical Information

Hydraulic fluid

Before starting project planning, please refer to our data sheets mineral oil and environmentally acceptable hydraulic fluids for detailed information regarding the choice of hydraulic fluid and application conditions.

When using environmentally acceptable hydraulic fluids, the limitations regarding technical data and seals must be observed.

Please contact us. When ordering, indicate the hydraulic fluid that is to be used.

Notes on the choice of hydraulic fluid

In order to select the correct hydraulic fluid, it is necessary to know the operating temperature in the reservoir (open circuit) in relation to the ambient temperature.

The hydraulic fluid should be selected so that within the operating temperature range, the viscosity lies within the optimum range (nopt), see shaded section of the selection diagram. We recommend to select the higher viscosity grade in each case.

Example: at an ambient temperature of X ℃ the operating temperature is 60℃. In the optimum operating viscosity range (Vopt; shaded area) this corresponds to viscosity grades VG 46 resp. VG 68; VG 68 should be selected.

Important

The case drain temperature is influenced by pressure and input speed and is always higher than the reservoir temperature.

However, at no point in the component may the temperature exceed 90℃. The temperature difference specified on the left is to be taken into account when determining the viscosity in the bearing

If the above conditions cannot be met, due to extreme operating parameters please contact us.

Filtration of the hydraulic fluid

The finer the filtration the better the cleanliness level of the hydraulic fluid and the longer the service life of the axial piston unit.

In order to guarantee the functional reliability of the axial piston unit it is necessary to carry out a gravimetric evaluation of the hydraulic fluid to determine the particle contamination and the cleanliness level according to ISO 4406.

A cleanliness level of at least 20/18/15 must be maintained.

At very high hydraulic fluid temperatures (90℃ to maximum 115℃), a cleanliness level of at least 19/17/14 according to ISO 4406 is necessary.

If the above cleanliness levels cannot be maintained, contact us.

Viscosity and temperature of hydraulic ﬂuids

	Viscosity	Shaft seal	Temperature 3)	Comment
Cold start	Vmax ≤1600 mm2/s	NBR 2) FKM	θSt ≥ -40℃ θSt ≥ -25℃	t ≤3 min, without load (P ≤ 50 bar) n≤1000 rpm Permissible temperature diﬀerence between axial piston unit and hydraulic ﬂuid in the system maximum 25 K
Warm-up phase	V = 1600～400 mm2/s			t ≤15 min,P ≤0.7＊P nom and n ≤ 0.5＊n nom
Continuous operation	V = 400～10 mm2/s1)	NBR 2) FKM	θ= +85℃ T = +110℃	measured at port L, L1
Continuous operation	V = 36～16 mm2/s			Range of optimum operating viscosity and efciency
Short-term operation	V = 10～7 mm2/s	NBR 2) FKM	θ = +85℃ θ = +110℃	t ≤3 min,P ≤0.3＊P nom measured at port L, L1

1）Corresponds e.g. for VG 46 to a temperature range of +4 °C to +85 °C (see selection diagram)

2）Version EA10VSO...-P (if operating with HFA, HFB and HFC hydraulic ﬂuids)

3）If the temperature at extreme operating parameters cannot be adhered to, please contact us

General instructions

The pump HD-A2FO is designed to be used in open circuits. The motor HD-A2FM/E is designed to be used in open and closedcircuits.

The project planning, installation and commissioning of the axial piston unit requires the involvement of qualified personnel.

Before using the axial piston unit, please read the corresponding instruction manual completely and thoroughly.

During and shortly after operation, there is a risk of burns on the axial piston unit. Take appropriate safety measures (e.g. by wearing protective clothing).

Depending on the operating conditions of the axial piston unit (operating pressure, fluid temperature), the characteristic may shift.

Service line ports

The ports and fastening threads are designed for the specified maximum pressure.

The machine or system manufacturer must ensure that the connecting elements and lines correspond to the specified application conditions (pressure, flow, hydraulic fluid, temperature) with the necessary safety factors.

The service line ports and function ports can only be used to accommodate hydraulic lines.

The data and notes contained herein must be adhered to.

The product is not approved as a component for the safety concept of a general machine according to ISO 13849.

The following tightening torques apply

Fittings

Observe the manufacturer's instructions regarding tightening torques of the fittings used

Mounting bolts

For mounting bolts with metric ISO thread according to DIN 13 or with thread according to ASME B1.1, we recommend checking the tightening torque in individual cases in accordance with VDI 2230.

Female threads in the axial piston unit

The maximum permissible tightening torques MG max are maximum values for the female threads and must not be exceeded. For values, see the following table.

Threaded plugs

For the metallic threaded plugs supplied with the axial piston unit, the required tightening torques of threaded plugs MV apply. For values, see the following table.

Ports		Maximum permissible tightening torque of the female threads M Gmax	Required tightening torque of the threaded plugs Mv1)	hexagon socket in the threaded plugs WAF
Standard	Size of thread		Required tightening torque of the threaded plugs Mv1)	hexagon socket in the threaded plugs WAF
DIN 3852	M8 x 1	10 Nm	7 Nm	3 mm
	M10 x 1	30 Nm	12 Nm	5 mm
	M12 x 1.5	50 Nm	25 Nm 2)	6 mm
	M14 x 1.5	80 Nm	35 Nm	6 mm
	M16 x 1.5	100 Nm	50 Nm	8 mm
	M18 x 1.5	140 Nm	60 Nm	8 mm
	M22 x 1.5	210 Nm	80 Nm	10 mm
	M26 x 1.5	230 Nm	120 Nm	12 mm
	M27 x 2	330 Nm	135 Nm	12 mm
	M33 x 2	540 Nm	225 Nm	17 mm
	M42 x 2	720 Nm	360 Nm	22 mm
DIN ISO 228	G1/4”	40 Nm	-	-