Rexroth A2FO12/61R-PZP06 Hydraulic Pump

The Rexroth A2FO12/61R-PZP06 Hydraulic Pump is specifically designed for severe duty and high overload applications. This A2FO12/61R-PZP06 Hydraulic Pump is ideal for use in mobile equipment, trucks and agricultural machinery and other mobile hydraulic applications which require a reliable, long-lasting performance from a hydraulic pump. Rexroth’s A2FO12/61R-PZP06 Hydraulic Pump has a compact external design that delivers high torque output power for operation in chainsaw chipper and harvester machines.

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Features

Type code

Dimensions

Technical data

Operating pressure range

Rexroth A2FO12/61R-PZP06 Hydraulic Pump service manual

Features

Robust pump with long service life
Very high total efficiency
High power density
Large variety of available nominal sizes allows exact adjustment to the application
Optional with long-life bearings for the nominal sizes 250 to 1000
Bent-axis design

Type code

Dimensions

Working port	Size	M18 × 15; 12 mm deep
	Standard 1)	DIN 3852
	State on delivery	With protective cover (must be connected)
Suction port	Size	M22 × 15; 14 mm deep
	Standard 1)	DIN 3852
	State on delivery	With protective cover (must be connected)
Drain port	Size	M10 × 1; 8 mm deep
	Standard 1)	DIN 3852
	State on delivery 2)	Plugged (observe installation instructions)
Drain port	Size	M10 × 1; 8 mm deep
	Standard 1)	DIN 3852
	State on delivery 2)	With protective cover (observe installation instructions)

Technical data

Table of values

Displacement geometric, per revolution		Vg	cm³	4.93	10.3	12	16	22.9	28.1	32	45.6	56.1	63	80.4
Nominal pressure		pnom	bar	315	400	400	400	400	400	400	400	400	400	400
Maximum pressure		pmax	bar	350	450	450	450	450	450	450	450	450	450	450
Maximum speed		nnom 1)	rpm	5600	3150	3150	3150	2500	2500	2500	2240	2000	2000	1800
Maximum speed		nmax 2)	rpm	8000	6000	6000	6000	4750	4750	4750	4250	3750	3750	3350
Flow	at nnom	qV	l/min	27.6	32	38	50	57	70	80	102	112	126	145
Power	at nnom and pnom	P	kW	14.5	22	25	34	38	47	53	68	75	84	96
Torque 3)	at pnom	M	Nm	24.7	66	76	102	146	179	204	290	357	401	512
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	8.73
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	0.0072
Case volume		V	l		0.17	0.17	0.17	0.2	0.2	0.2	0.33	0.45	0.45	0.55
Weight (approx.)		m	kg	2.5	6	6	6	9.5	9.5	9.5	13.5	18	18	23

1) The values are applicable:
– at an abs. pressure pabs = 1 bar at the suction port S
– for the optimum viscosity range of vopt = 36 to 16 mm2/s
– with hydraulic fluid on the basis of 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”

Maximum speed

Viscosity and temperature of hydraulic fluids


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 • pnommeasured at port T
Short-term operation	νmin = 7 … 10 mm²/s	FKM	ϑ ≤ +103 °C	t ≤ 3 min, p ≤ 0.3 • pnommeasured 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)

Selection diagram

Operating pressure range

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.
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
Continuous differential pressure	ΔpT cont	2 bar	Maximum averaged differential pressure at the shaft seal (case to ambient pressure)
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 < 0.1 s