Rexroth A2FO32/61L-PZB06 Hydraulic Pump

The Rexroth A2FO32/61L-PZB06 Hydraulic Pump offers a wide range of benefits: easy installation, low noise and vibration levels, long service life and high efficiency at all temperatures. The A2FO32/61L-PZB06 hydraulic pump has become the benchmark for modern small hydraulic drives in the market.

Contents hide

Features

Technical data

Maximum speed

Hydraulic fluids

Selection diagram

Filtration of the hydraulic fluid

Operating pressure range

Dimensions

Type code

Rexroth A2FO32/61L-PZB06 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

Technical data

Size				5	10	12	16	23	28	32	45	56	63	80	90	107	125	160	180	200	250	355	500	710	1000
Displacement geometric, per revolution		V_g	cm³	4.93	10.3	12	16	22.9	28.1	32	45.6	56.1	63	80.4	90	106.7	125	160.4	180	200	250	355	500	710	1000
Nominal pressure		p_nom	bar	315	400	400	400	400	400	400	400	400	400	400	400	400	400	400	400	400	350	350	350	350	350
Maximum pressure		p_max	bar	350	450	450	450	450	450	450	450	450	450	450	450	450	450	450	450	450	400	400	400	400	400
Maximum speed		n_nom ¹⁾	rpm	5600	3150	3150	3150	2500	2500	2500	2240	2000	2000	1800	1800	1600	1600	1450	1450	1550	1500	1320	1200	1200	950
Maximum speed		n_max ²⁾	rpm	8000	6000	6000	6000	4750	4750	4750	4250	3750	3750	3350	3350	3000	3000	2650	2650	2750	1800	1600	1500	1500	1200
Flow	at n_nom	q_V	l/min	27.6	32	38	50	57	70	80	102	112	126	145	162	171	200	233	261	310	375	469	600	852	950
Power	at n_nom and p_nom	P	kW	14.5	22	25	34	38	47	53	68	75	84	96	108	114	133	155	174	207	219	273	350	497	554
Torque ³⁾	at p_nom	M	Nm	24.7	66	76	102	146	179	204	290	357	401	512	573	679	796	1021	1146	1273	1393	1978	2785	3955	5570
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	9.14	11.2	11.9	17.4	18.2	57.3	73.1	96.1	144	270	324
Moment of inertia for rotary group		J_TW	kg·m²	0.00006	0.0004	0.0004	0.0004	0.0012	0.0012	0.0012	0.0024	0.0042	0.0042	0.0072	0.0072	0.0116	0.0116	0.022	0.022	0.0353	0.061	0.102	0.178	0.55	0.55
Case volume		V	l		0.17	0.17	0.17	0.2	0.2	0.2	0.33	0.45	0.45	0.55	0.55	0.8	0.8	1.1	1.1	2.7	2.5	3.5	4.2	8	8
Weight (approx.)		m	kg	2.5	6	6	6	9.5	9.5	9.5	13.5	18	18	23	23	32	32	45	45	66	73	110	155	325	336

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

Hydraulic fluids

	Viscosity	Shaft seal	Temperature¹⁾	Comment
Cold start	ν_max ≤ 1600 mm²/s	NBR²⁾	ϑ_St ≥ -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	ν_max ≤ 1600 mm²/s	FKM	ϑ_St ≥ -25 °C
Warm-up phase	ν = 400 … 1600 mm²/s			t ≤ 15 min, p ≤ 0.7 • p_nom and n ≤ 0.5 • n_nom
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
	ν_opt = 16 … 36 mm²/s			range of optimum operating viscosity and efficiency
Short-term operation	ν_min = 7 … 10 mm²/s	NBR²⁾	ϑ ≤ +78 °C	t ≤ 3 min, p ≤ 0.3 • p_nom measured at port T
Short-term operation	ν_min = 7 … 10 mm²/s	FKM	ϑ ≤ +103 °C	t ≤ 3 min, p ≤ 0.3 • p_nom measured at port T

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	p_nom	see table of values	The nominal pressure corresponds to the maximum design pressure.
Maximum pressure	p_max	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	p_HP 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	R_A 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	p_s 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	p_s max	30 bar absolute
Case pressure at port T			Definition
Continuous differential pressure	Δp_T _cont	2 bar	Maximum averaged differential pressure at the shaft seal (case to ambient pressure)
Maximum differential pressure	Δp_T _max	see diagram “Maximum differential pressure at the shaft seal”	Intermittent differential pressure at the shaft seal (permitted at reduced speed)
Pressure peaks	p_T _peak	10 bar	t < 0.1 s

Dimensions

Size	D1		D3	D4	D6	D8	D9	D10	D11	D12	D13	D14	D15	D16	D17	D18	D19	D20	D21	D22	D25	D28	D29	D32	D40	D41	D42	D43	D44
Size	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm
23	100	0 – 0.022	190	117	60	18	8	25	23.2	70	144	88	166	14	25	106	56	42	61	9	118	125	11	106	18.2	40.5	13	22.2	47.6
28	100	0 – 0.022	190	117	60	18	8	25	23.2	70	144	88	166	14	25	106	56	42	61	9	118	125	11	106	18.2	40.5	13	22.2	47.6
32	100	0 – 0.022	190	117	60	18	8	25	23.2	70	144	88	166	14	25	106	56	42	61	9	118	125	11	106	18.2	40.5	13	22.2	47.6
45	125	0 – 0.025	207	133	64	20	12	32	30	80	155	100	179	20	28	108	63	42	78	11	150	160	13.5	118	23.8	50.8	19	26.2	52.4
56	125	0 – 0.025	225	142	68	20	10	32	30	87	171	107	195	23	31	117	70	50	78	11	150	160	13.5	128	23.8	50.8	19	26.2	52.4
63	125	0 – 0.025	225	142	68	20	10	32	30	87	171	107	195	23	31	117	70	50	78	11	150	160	13.5	128	23.8	50.8	19	26.2	52.4
80	140	0 – 0.025	257	162	73	20	10	32	29	99	196	122	224	25	41	132	83	63	86	11	165	180	13.5	138	27.8	57.2	25	30.2	58.7
90	140	0 – 0.025	257	162	73	20	10	32	29	99	196	136	224	25	41	132	83	63	86	11	165	180	13.5	138	27.8	57.2	25	30.2	58.7
107	160	0 – 0.025	275	174	89	23	10	40	85	110	213	136	245	20	40	140	85	65	98	12	190	200	17.5	150	27.8	57.2	25	35.7	69.9
125	160	0 – 0.025	275	174	89	23	10	40	36.5	110	213	136	245	20	40	140	85	65	98	12	190	200	17.5	150	31.8	66.7	32	35.7	69.9
160	180	0 – 0.025	294	188	101	25	10	40	37.2	121	237	149	271	15	47	158	96	72	108	13	210	224	17.5	180	31.8	66.7	32	35.7	69.9
180	180	0 – 0.025	294	188	101	25	10	40	37.2	121	237	149	271	15	47	158	96	72	108	13	210	224	17.5	180	31.8	66.7	32	35.7	69.9

Type code