Product Groups

kamenzhang

Mobile :

Tel : 0065-81416102

Request a quote

Address：4 Pemimpin Drive #03-09, Lip Hing Industrial Building Singapore 576147

Product Description

Rexeoth Model list:

Material number	Designation
R902018134	AXIAL-PISTON PUMP A2FO12/61L-VPB06-S
R902018445	AXIAL-PISTON PUMP A2FO12/61L-PPB06
R902021574	AXIAL-PISTON PUMP A2FO12/61L-PZP06
R902021590	AXIAL-PISTON PUMP A2FO12/61L-PAB06
R902021669	AXIAL-PISTON PUMP A2FO12/61L-PZB06
R902021698	AXIAL-PISTON PUMP A2FO12/61L-PBB06
R902027137	AXIAL-PISTON PUMP A2FO12/61L-VPB06
R902027374	AXIAL-PISTON PUMP A2FO12/61L-PPP06
R902028574	AXIAL-PISTON PUMP A2FO12/61L-XAB06-S
R902042055	AXIAL-PISTON PUMP A2FO12/61L-VBB06-S
R902049387	AXIAL-PISTON PUMP A2FO12/61L-VZB06
R902080561	AXIAL-PISTON PUMP A2FO12/61L-VAB06
R902161395	AXIAL-PISTON PUMP A2FO12/61L-VBB06
R902193349	AXIAL-PISTON PUMP A2FO12/61L-PZB06
R902193373	AXIAL-PISTON PUMP A2FO12/61L-PZB06
R902193567	AXIAL-PISTON PUMP A2FO12/61L-VPB06
R902193750	AXIAL-PISTON PUMP A2FO12/61L-PZB06-S
R902198198	AXIAL-PISTON PUMP A2FO12/61L-PAB06-S
R902201651	AXIAL-PISTON PUMP A2FO12/61L-VPB06
R902201803	AXIAL-PISTON PUMP A2FO12/61L-PAB06-S
R902201812	AXIAL-PISTON PUMP A2FO12/61L-PPB06-S
R902201838	AXIAL-PISTON PUMP A2FO12/61L-PPB06-S
R902201865	AXIAL-PISTON PUMP A2FO12/61L-PZB06-S
R902204889	AXIAL-PISTON PUMP A2FO12/61L-PZB06-S
R902205888	AXIAL-PISTON PUMP A2FO12/61L-VPB06
R902215368	AXIAL-PISTON PUMP A2FO12/61L-VPB06
R902237452	AXIAL-PISTON PUMP A2FO12/61L-VPB06
R902250990	AXIAL-PISTON PUMP A2FO12/61L-VAB06
R902255690	AXIAL-PISTON PUMP A2FO12/61L-PZB06

R902021574 A2FO12/61L-PZP06 Technical data:

Size				5	10	12	16	23	28	32	45	56	63
Displacement		Vg	cm³	4.93	10.3	12	16	22.9	28.1	32	45.6	56.1	63
geometric, per revolution		Vg	cm³	4.93	10.3	12	16	22.9	28.1	32	45.6	56.1	63
Nominal pressure		pnom	bar	315	400	400	400	400	400	400	400	400	400
Maximum pressure		pmax	bar	350	450	450	450	450	450	450	450	450	450
Maximum speed		nnom 1)	rpm	5600	3150	3150	3150	2500	2500	2500	2240	2000	2000
Maximum speed		nmax 2)	rpm	8000	6000	6000	6000	4750	4750	4750	4250	3750	3750
Flow	at nnom	qV	l/min	27.6	32	38	50	57	70	80	102	112	126
Power	at nnomand pnom	P	kW	14.5	22	25	34	38	47	53	68	75	84
Torque 3)	at pnom	M	Nm	24.7	66	76	102	146	179	204	290	357	401
Rotary stiffness		c	kNm/rad	0.63	0.92	1.25	1.59	2.56	2.93	3.12	4.18	5.94	6.25
Moment of inertia for rotary group		JTW	kg·m²	0.00006	0.0004	0.0004	0.0004	0.0012	0.0012	0.0012	0.0024	0.0042	0.0042
Maximum angular acceleration		ɑ	rad/s²	5000	5000	5000	5000	6500	6500	6500	14600	7500	7500
Case volume		V	l		0.17	0.17	0.17	0.2	0.2	0.2	0.33	0.45	0.45
Weight (approx.)		m	kg	2.5	6	6	6	9.5	9.5	9.5	13.5	18	18

Maximum speed

1)	These values are valid at: - an absolute pressure of pabs = 1 bar at suction port S - for the optimum viscosity range from vopt = 36 to 16 mm2/s - with hydraulic fluid based on mineral oils
2)	Maximum speed (limiting speed) with increased inlet pressure pabs at suction port S, see the following diagram.
3)	Torque without radial force, with radial force see table "Permissible radial and axial forces of the drive shafts"

Note

The values in the table are theoretical values, without consideration of efficiencies and tolerances. The values are rounded.

Exceeding the maximum or falling below the minimum permissible values can lead to a loss of function, a reduction in operational service life or total destruction of the axial piston unit. Other permissible limit values, such as speed variation, reduced angular acceleration as a function of the frequency and the permissible angular acceleration at start (lower than the maximum angular acceleration) can be CONTACT US.

Determining the operating characteristics
Flow		[l/min]
Torque		[Nm]
Power		[kW]

Key
Vg	Displacement per revolution [cm3]
Δp	Differential pressure [bar]
n	Rotational speed [rpm]
ηv	Volumetric efficiency
ηhm	Hydraulic-mechanical efficiency
ηt	Total efficiency (ηt = ηv • ηhm)

Hydraulic fluids

The axial piston unit is designed for operation with mineral oil HLP according to DIN 51524.

Application instructions and requirements for hydraulic fluids should be taken from the following data sheets before the start of project planning:

90220: Hydraulic fluids based on mineral oils and related hydrocarbons
90221: Environmentally acceptable hydraulic fluids
90222: Fire-resistant, water-free hydraulic fluids (HFDR, HFDU)
90223: Fire-resistan, water-containing hydraulic fluids (HFAE, HFAS, HFB, HFC)
90225: Restricted technical data for operation with fire-resistant hydraulic fluids

Viscosity and temperature of hydraulic fluids

	Viscosity	Shaft seal	Temperature1)	Comment
Cold start	νmax ≤ 1600 mm²/s	NBR2)	ϑSt ≥ -40 °C	t ≤ 3 min, without load (p ≤ 50 bar), n ≤ 1000 rpm, permissible temperature difference between axial piston unit and hydraulic fluid max. 25 K
Cold start	νmax ≤ 1600 mm²/s	FKM	ϑSt ≥ -25 °C
Warm-up phase	ν = 400 … 1600 mm²/s			t ≤ 15 min, p ≤ 0.7 • pnom and n ≤ 0.5 • nnom
Continuous operation	ν = 10 … 400 mm²/s3)	NBR2)	ϑ ≤ +78 °C	measured at port T
	ν = 10 … 400 mm²/s3)	FKM	ϑ ≤ +103 °C	measured at port T
	νopt = 16 … 36 mm²/s			range of optimum operating viscosity and efficiency
Short-term operation	νmin = 7 … 10 mm²/s	NBR2)	ϑ ≤ +78 °C	t ≤ 3 min, p ≤ 0.3 • pnom measured at port T
Short-term operation	νmin = 7 … 10 mm²/s	FKM	ϑ ≤ +103 °C	t ≤ 3 min, p ≤ 0.3 • pnom measured at port T

1)	If the specified temperatures cannot be maintained due to extreme operating parameters, please contact us.
2)	Special version, please contact us.
3)	Equates e.g. with the VG 46 a temperature range of +5 °C to +85 °C (see selection diagram)

Explanatory note regarding the selection of hydraulic fluid

The hydraulic fluid should be selected such that the operating viscosity in the operating temperature range is within the optimum range (vopt see selection diagram).

Selection diagram

Filtration of the hydraulic fluid

Finer filtration improves the cleanliness level of the hydraulic fluid, which increases the service life of the axial piston unit.

A cleanliness level of at least 20/18/15 is to be maintained according to ISO 4406.

At a hydraulic fluid viscosity of less than 10 mm²/s (e.g. due to high temperatures in short-term operation) at the drain port, a cleanliness level of at least 19/17/14 according to ISO 4406 is required.

For example, the viscosity is 10 mm²/s at:

HLP 32 a temperature of 73°C

HLP 46 a temperature of 85°C

Operating pressure range

Pressure at working port A or B (high-pressure side)			Definition
Nominal pressure	pnom	see table of values	The nominal pressure corresponds to the maximum design pressure.
Maximum pressure	pmax	see table of values	The maximum pressure corresponds to the maximum operating pressure within the single operating period. The sum of the single operating periods must not exceed the total operating period.
Single operating period		10 s
Total operating period		300 h
Minimum pressure	pHP min	25 bar	Minimum pressure on high-pressure side (port A or B) required to prevent damage to the axial piston unit.
Rate of pressure change	RA max	16000 bar/s	Maximum permissible rate of pressure build-up and reduction during a pressure change over the entire pressure range.
Pressure at suction port S (inlet)			Definition
Minimum pressure	ps min	0.8 bar absolute	Minimum pressure at inlet (suction port S) that is required to avoid damage to the axial piston unit. The minimum required pressure is dependent on the speed of the axial piston unit. (see diagram "Maximum speed")
Maximum pressure	ps max	30 bar absolute
Case pressure at port T			Definition
Continuous differential pressure	ΔpT cont	2 bar	Maximum averaged differential pressure at the shaft seal (case to ambient)
Maximum differential pressure	ΔpT max	see diagram "Maximum differential pressure at the shaft seal"	Intermittent differential pressure at the shaft seal (permitted at reduced speed)
Pressure peaks	pT peak	10 bar	t

Note

Working pressure range valid when using hydraulic fluids based on mineral oils. Values for other hydraulic fluids, please contact us.

Pressure definition

1)	Total operating period = t1 + t2 + ... + tn

Rate of pressure change

Maximum differential pressure at the shaft seal

Note

The service life of the shaft seal is influenced by the speed of the axial piston unit and the case pressure.

The service life decreases with an increase of the mean differential pressure between the case and the ambient pressure and with a higher frequency of pressure spikes.

The case pressure must be equal to or higher than the ambient pressure.

Direction of flow

Direction of rotation, viewed on drive shaft	clockwise	counter-clockwise
Direction of flow	S to B	S to A

Notes for sizes 250 ... 1000:

In case of radial forces limited performance data is valid. Please contact us.

In case of axial forces during operation of the unit please contact us.

Effect of radial force Fq on the service life of bearings

By selecting a suitable direction of radial force Fq the load on the bearings caused by the internal rotary group forces can be reduced, thus optimizing the service life of the bearings. Recommended position of mating gear is dependent on direction of rotation. Examples:

Toothed gear drive, size 5 … 180

Toothed gear drive, size 200 … 1000

1	Direction of rotation "clockwise", pressure at port B
2	Direction of rotation "counter-clockwise", pressure at port A

Long-life bearing

Size 250 to 1000

For long life cycle and use with HF hydraulic fluids. Identical external dimensions as design with standard bearing. Subsequent modification to long-life bearing is possible. Bearing and housing flushing via connection U is recommended.

Bearing flushing

Flushing flow (recommended)

Size		250	355	500	710	1000
Flushing flow qv	l/min	10	16	16	16	16

Related News

Reasons for Leakage of Pressure Control Valve of Pressure Regulator in Nuclear Power Station

When the valve with internal leakage failure disintegrates, it is found that the sealing surface of the valve core seat is damaged, which is characterized by dense medium scouring grooves. In the closed state, the valve medium can still leak along the...

Inspection and maintenance of piston seals

According to the analysis of protective components used in agricultural machinery, the leakage control of hydraulic cylinder is mainly piston seals. From the point of view of inspection, specific inspections should be carried out for different types. For...

Performance of Swash-plate Type Axial Piston Pump

The swash plate axial piston pump on the traditional research on the flow characteristics and pressure characteristics in low speed conditions, to improve the series piston pump, which can meet in low-speed conditions as power element pump control system...

R902021574 A2FO12/61L-PZP06 REXROTH AXIAL-PISTON PUMP

Product Description

Related News

NEW ARRIVALS