A2FO series 6x

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

Table of values

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
Maximum angular acceleration		ɑ	rad/s²	5000	5000	5000	5000	6500	6500	6500	14600	7500	7500	6000	6000	4500	4500	3500	3500	11000	10000	8300	5500	4300	4500
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⁾	These values are valid at: - an absolute pressure of p_abs = 1 bar at suction port S - for the optimum viscosity range from v_opt = 36 to 16 mm²/s - with hydraulic fluid based on mineral oils
²⁾	Maximum speed (limiting speed) with increased inlet pressure p_abs 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

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 found in data sheet 90261.

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

Key
V_g	Displacement per revolution [cm³]
Δp	Differential pressure [bar]
n	Rotational speed [rpm]
η_v	Volumetric efficiency
η_hm	Hydraulic-mechanical efficiency
η_t	Total efficiency (η_t = η_v \u2022 η_hm)

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	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 \u2026 1600 mm²/s			t ≤ 15 min, p ≤ 0.7 \u2022 p_nom and n ≤ 0.5 \u2022 n_nom
Continuous operation	ν = 10 \u2026 400 mm²/s³⁾	NBR²⁾	ϑ ≤ +78 °C	measured at port T
	ν = 10 \u2026 400 mm²/s³⁾	FKM	ϑ ≤ +103 °C	measured at port T
	ν_opt = 16 \u2026 36 mm²/s			range of optimum operating viscosity and efficiency
Short-term operation	ν_min = 7 \u2026 10 mm²/s	NBR²⁾	ϑ ≤ +78 °C	t ≤ 3 min, p ≤ 0.3 \u2022 p_nom measured at port T
Short-term operation	ν_min = 7 \u2026 10 mm²/s	FKM	ϑ ≤ +103 °C	t ≤ 3 min, p ≤ 0.3 \u2022 p_nom 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)

Selection of hydraulic fluid

Bosch Rexroth evaluates hydraulic fluids on the basis of the Fluid Rating according to the technical data sheet 90235.

Hydraulic fluids with positive evaluation in the Fluid Rating are provided in the following technical data sheet:

90245: Bosch Rexroth Fluid Rating List for Rexroth hydraulic components (pumps and motors)

The hydraulic fluid should be selected so that the operating viscosity in the operating temperature range is within the optimum range (ν_opt; 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	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)
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

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 + ... + t_n

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

Permissible radial and axial forces of the drive shaft

Size			5	10		12		16	23		28		32	45	56			63	80			90	107		125	160		180	200	250	355	500	710	1000
Drive shaft	Code		B, C	Z, P	A, B	Z, P	A, B	A, B	Z, P	A, B	Z, P	A, B	A, B	Z, P	Z	P	A, B	A, B	Z	P	A, B	A, B	Z, P	A, B	A, B	Z, P	A, B	A, B	A, B	Z, P	Z, P	Z, P	Z, P	Z, P
Drive shaft	⌀	mm	12	20	25	20	25	25	25	30	25	30	30	30	30	30	35	35	35	35	40	40	40	45	45	45	45	50	50	50	60	70	90	90
Maximum radial force at distance a (from shaft collar)	F_q max	kN	1.6	3	3.2	3	3.2	3.2	5.7	5.4	5.7	5.4	5.4	7.6	7.8	9.5	9.1	9.1	11.1	11.6	11.4	11.4	13.6	14.1	14.1	18.1	18.3	18.3	20.3	1.2 ¹⁾	1.5 ¹⁾	1.9 ¹⁾	3 ¹⁾	2.6 ¹⁾
Maximum radial force at distance a (from shaft collar)	a	mm	12	16	16	16	16	16	16	16	16	16	16	18	18	18	18	18	20	20	20	20	20	20	20	25	25	25	25	41	52.5	52.5	67.5	67.5
Permitted torque at F_q max	T_q max	Nm	24.7	66	66	76	76	102	146	146	179	179	204	290	294	357	357	401	488	512	512	573	679	679	796	1021	1021	1146	1273
Permitted differential pressure at F_q max	Δp_q max	bar	315	400	400	400	400	400	400	400	400	400	400	400	330	400	400	400	380	400	400	400	400	400	400	400	400	400	400
Maximum axial force, when standstill or in non-pressurized conditions	+ F_ax max	N	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
	- F_ax max	N	180	320	320	320	320	320	500	500	500	500	500	630	800	800	800	800	1000	1000	1000	1000	1250	1250	1250	1600	1600	1600	1600	2000	2500	3000	4400	4400
Maximum axial force, per bar operating pressure	+ F_ax max	N/bar	1.5	3	3	3	3	3	5.2	5.2	5.2	5.2	5.2	7	8.7	8.7	8.7	9.7	10.6	10.6	10.6	10.6	12.9	12.9	12.9	16.7	16.7	16.7	5.2

¹⁾	When at a standstill or when axial piston unit operating in non-pressurized conditions. Higher forces are permissible when under pressure, please contact us.

General information

The specified values are maximum data and not approved for continuous operation.

The axial force in the direction of action -F_axis to be avoided as this reduces the bearing life cycle.

The output by means of belts requires special conditions. Please consult us.

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 F_qon the service life of bearings

By selecting a suitable direction of radial force F_q 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 \u2026 180

Toothed gear drive, size 200 \u2026 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 q_v	l/min	10	16	16	16	16

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

Key
V_g	Displacement per revolution [cm³]
Δp	Differential pressure [bar]
n	Rotational speed [rpm]
η_v	Volumetric efficiency
η_hm	Hydraulic-mechanical efficiency
η_t	Total efficiency (η_t = η_v \u2022 η_hm)

	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
FKM	ϑ_St ≥ -25 °C
Warm-up phase	ν = 400 \u2026 1600 mm²/s			t ≤ 15 min, p ≤ 0.7 \u2022 p_nom and n ≤ 0.5 \u2022 n_nom
Continuous operation	ν = 10 \u2026 400 mm²/s³⁾	NBR²⁾	ϑ ≤ +78 °C	measured at port T
FKM	ϑ ≤ +103 °C
ν_opt = 16 \u2026 36 mm²/s			range of optimum operating viscosity and efficiency
Short-term operation	ν_min = 7 \u2026 10 mm²/s	NBR²⁾	ϑ ≤ +78 °C	t ≤ 3 min, p ≤ 0.3 \u2022 p_nom measured at port T
FKM	ϑ ≤ +103 °C

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)
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

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

Size 5

¹⁾	To shaft collar

Drive shafts

¹⁾	Center bore according to DIN 332 (thread according to DIN 13)
²⁾	Thread according to DIN 3852, maximum tightening torque: 30 Nm

Ports

Size			5
B (A)	Working port	Size	M18 × 1.5; 12 mm deep
		Standard ¹⁾	DIN 3852
		State on delivery	With protective cover (must be connected)
S	Suction port	Size	M22 × 1.5; 14 mm deep
		Standard ¹⁾	DIN 3852
		State on delivery	With protective cover (must be connected)
T₁	Drain port	Size	M10 × 1; 8 mm deep
		Standard ¹⁾	DIN 3852
		State on delivery ²⁾	Plugged (observe installation instructions)
T₂	Drain port	Size	M10 × 1; 8 mm deep
		Standard ¹⁾	DIN 3852
		State on delivery ²⁾	With protective cover (observe installation instructions)

¹⁾	The spot face can be deeper than specified in the appropriate standard.
²⁾	Unless otherwise specified. Other layouts on request.

Size 10 \u2026 16

¹⁾	To shaft collar

Drive shafts Z and A

¹⁾	Center bore according to DIN 332 (thread according to DIN 13)

Drive shafts P and B

¹⁾	Center bore according to DIN 332 (thread according to DIN 13)

Ports

Size			10	12	16
B (A)	Working port	Size	M22 × 1.5; 14 mm deep
		Standard ¹⁾	DIN 3852
		State on delivery	With protective cover (must be connected)
S	Suction port	Size	M33 × 2; 18 mm deep
		Standard ¹⁾	DIN 3852
		State on delivery	With protective cover (must be connected)
T₁	Drain port	Size	M12 × 1.5; 12 mm deep
		Standard ¹⁾	DIN 3852
		State on delivery ²⁾	Plugged (observe installation instructions)
T₂	Drain port	Size	M12 × 1.5; 12 mm deep
		Standard ¹⁾	DIN 3852
		State on delivery ²⁾	With protective cover (observe installation instructions)
R	Air bleed port	Size	M8 × 1; 8 mm deep
		Standard ¹⁾	DIN 3852
		State on delivery	Plugged

¹⁾	The spot face can be deeper than specified in the appropriate standard.
²⁾	Unless otherwise specified. Other layouts on request.

Size 23 \u2026 180

¹⁾	To shaft collar

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

Drive shafts Z and A

¹⁾	Center bore according to DIN 332 (thread according to DIN 13)

Splined shaft DIN 5480

NG	Code	Designation	Thread G	N2	N3	N4	N5	ØN6
NG	Code	Designation	Thread G	mm	mm	mm	mm	mm
23	Z	W25×1.25×18×9g	M8 × 1.25	6	19	28	43	35
23	A	W30×2×14×9g	M10 × 1.5	7.5	22	27	35	35
28	Z	W25×1.25×18×9g	M8 × 1.25	6	19	28	43	35
28	A	W30×2×14×9g	M10 × 1.5	7.5	22	27	35	35
32	A	W30×2×14×9g	M10 × 1.5	7.5	22	27	35	35
45	Z	W30×2×14×9g	M12 × 1.75	9.5	28	27	35	35
56	Z	W30×2×14×9g	M12 × 1.75	9.5	28	27	35	40
56	A	W35×2×16×9g	M12 × 1.75	9.5	28	32	40	40
63	A	W35×2×16×9g	M12 × 1.75	9.5	28	32	40	40
80	Z	W35×2×16×9g	M12 × 1.75	9.5	28	32	40	45
80	A	W40×2×18×9g	M16 × 2	12	36	37	45	45
90	A	W40×2×18×9g	M16 × 2	12	36	37	45	45
107	Z	W40×2×18×9g	M12 × 1.75	9.5	28	37	45	50
107	A	W45×2×21×9g	M16 × 2	12	36	42	50	50
125	A	W45×2×21×9g	M16 × 2	12	36	42	50	50
160	Z	W45×2×21×9g	M16 × 2	12	36	42	50	60
160	A	W50×2×24×9g	M16 × 2	12	36	44	55	60
180	A	W50×2×24×9g	M16 × 2	12	36	44	55	60

Drive shafts P and B

¹⁾	Center bore according to DIN 332 (thread according to DIN 13)

Parallel keyed shaft DIN 6885

NG	Code	Designation	Thread G	⌀N1		N2	N3	N5	⌀N6	N7	N8
NG	Code	Designation	Thread G	mm	mm	mm	mm	mm	mm	mm	mm
23	P	⌀25, AS8×7×40	M8 × 1.25	25	+ 0.015 + 0.002	6	19	50	35	28	8
23	B	⌀30, AS8×7×40	M10 × 1.5	30	+ 0.015 + 0.002	7.5	22	50	35	33	8
28	P	⌀25, AS8×7×40	M8 × 1.25	25	+ 0.015 + 0.002	6	19	50	35	28	8
28	B	⌀30, AS8×7×40	M10 × 1.5	30	+ 0.015 + 0.002	7.5	22	50	35	33	8
32	B	⌀30, AS8×7×40	M10 × 1.5	30	+ 0.015 + 0.002	7.5	22	50	35	33	8
45	P	⌀30, AS8×7×50	M12 × 1.75	30	+ 0.015 + 0.002	9.5	28	60	35	33	8
56	P	⌀30, AS8×7×50	M12 × 1.75	30	+ 0.015 + 0.002	9.5	28	60	40	33	8
56	B	⌀35, AS10×8×50	M12 × 1.75	35	+ 0.018 + 0.002	9.5	28	60	40	38	10
63	B	⌀35, AS10×8×50	M12 × 1.75	35	+ 0.018 + 0.002	9.5	28	60	40	38	10
80	P	⌀35, AS10×8×56	M12 × 1.75	35	+ 0.018 + 0.002	9.5	28	70	45	38	10
80	B	⌀40, AS12×8×56	M16 × 2	40	+ 0.018 + 0.002	12	36	70	45	43	12
90	B	⌀40, AS12×8×56	M16 × 2	40	+ 0.018 + 0.002	12	36	70	45	43	12
107	P	⌀40, AS12×8×63	M12 × 1.75	40	+ 0.018 + 0.002	9.5	28	80	50	43	12
107	B	⌀45, AS14×9×63	M16 × 2	45	+ 0.018 + 0.002	12	36	80	50	48.5	14
125	B	⌀45, AS14×9×63	M16 × 2	45	+ 0.018 + 0.002	12	36	80	50	48.5	14
160	P	⌀45, AS14×9×70	M16 × 2	45	+ 0.018 + 0.002	12	36	90	60	48.5	14
160	B	⌀50, AS14×9×70	M16 × 2	50	+ 0.018 + 0.002	12	36	90	60	53.5	14
180	B	⌀50, AS14×9×70	M16 × 2	50	+ 0.018 + 0.002	12	36	90	60	53.5	14

Ports

Size			23	28	32	45	56	63	80	90	107	125	160	180
B (A)	Working port	Size	1/2 in			3/4 in			1 in			1 1/4 in
		Standard	Dimensions according to SAE J518
		Fastening thread ¹⁾	M8 × 1.25; 15 mm deep			M10 × 1.5; 17 mm deep			M12 × 1.75; 17 mm deep			M14 × 2; 19 mm deep
		State on delivery	With protective cover (must be connected)
S	Suction port	Size	3/4 in			1 in			1 1/4 in		1 1/2 in
		Standard	Dimensions according to SAE J518
		Fastening thread ¹⁾	M10 × 1.5; 17 mm deep								M12 × 1.75; 20 mm deep
		State on delivery	With protective cover (must be connected)
T₁	Drain port	Size	M16 × 1.5; 12 mm deep			M18 × 1.5; 12 mm deep							M22 × 1.5; 14 mm deep
		Standard ²⁾	DIN 3852
		State on delivery ³⁾	Plugged (observe installation instructions)
T₂	Drain port	Size	M16 × 1.5; 12 mm deep			M18 × 1.5; 12 mm deep							M22 × 1.5; 14 mm deep
		Standard ²⁾	DIN 3852
		State on delivery ³⁾	With protective cover (observe installation instructions)
R	Air bleed port	Size	M10 × 1; 12 mm deep			M12 × 1.5; 12 mm deep					M14 × 1.5; 12 mm deep
		Standard ²⁾	DIN 3852
		State on delivery	Plugged

¹⁾	Thread according to DIN 13
²⁾	The spot face can be deeper than specified in the appropriate standard.
³⁾	Unless otherwise specified. Other layouts on request.

Size 200

¹⁾	To shaft collar

Drive shafts

¹⁾	Center bore according to DIN 332 (thread according to DIN 13)

Ports

Size			200
B (A)	Working port	Size	1 1/4 in
		Standard	Dimensions according to SAE J518
		Fastening thread ¹⁾	M14 × 2; 19 mm deep
		State on delivery	With protective cover (must be connected)
S	Suction port	Size	3 1/2 in
		Standard	Dimensions according to SAE J518
		Fastening thread ¹⁾	M16 × 2; 24 mm deep
		State on delivery	With protective cover (must be connected)
T₁	Drain port	Size	M22 × 1.5; 14 mm deep
		Standard ²⁾	DIN 3852
		State on delivery ³⁾	Plugged (observe installation instructions)
T₂	Drain port	Size	M22 × 1.5; 14 mm deep
		Standard ²⁾	DIN 3852
		State on delivery ³⁾	With protective cover (observe installation instructions)
R	Air bleed port	Size	M14 × 1.5; 12 mm deep
		Standard ²⁾	DIN 3852
		State on delivery	Plugged

¹⁾	Thread according to DIN 13
²⁾	The spot face can be deeper than specified in the appropriate standard.
³⁾	Unless otherwise specified. Other layouts on request.

Size 250

¹⁾	To shaft collar

Drive shafts

¹⁾	Center bore according to DIN 332 (thread according to DIN 13)

Ports

Size			250
B (A)	Working port	Size	1 1/4 in
		Standard	Dimensions according to SAE J518
		Fastening thread ¹⁾	M14 × 2; 19 mm deep
		State on delivery	With protective cover (must be connected)
S	Suction port	Size	2 1/2 in
		Standard	Dimensions according to SAE J518
		Fastening thread ¹⁾	M12 × 1.75; 17 mm deep
		State on delivery	With protective cover (must be connected)
T₁	Drain port	Size	M22 × 1.5; 14 mm deep
		Standard ²⁾	DIN 3852
		State on delivery ³⁾	With protective cover (observe installation instructions)
T₂	Drain port	Size	M22 × 1.5; 14 mm deep
		Standard ²⁾	DIN 3852
		State on delivery ³⁾	Plugged (observe installation instructions)
U	Bearing flushing	Size	M14 × 1.5; 12 mm deep
		Standard ²⁾	DIN 3852
		State on delivery	Plugged

¹⁾	Thread according to DIN 13
²⁾	The spot face can be deeper than specified in the appropriate standard.
³⁾	Unless otherwise specified. Other layouts on request.

Size 355 \u2026 1000

¹⁾	To shaft collar

Size	D1		D3	D4	D5	D7	D8	D9	D10	D11	D12	D14	D15	D18	D20	D24	D25	D27	D28	D29	D30	D32	D40	D41	D42	D43	D44	D45	D47	D48
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
355	280	0 - 0.081	350	198	171	250	28	14	50	48	128	102	320	83	83	23.5	335	360	320	18	M18	245	36.5	79.4	40	50.8	88.9	63	60	50
500	315	0 - 0.081	396	220	192	276	30	14	50	48	142	112.5	362	98	111	27.5	375	400	360	22	M20	270	36.6	79.4	40	62	106.4	75	65	55
710	400	0 - 0.089	507	249	236	344	35	14	50	47	183	102	485	131	156	41.5	465	500	450	22	M24	340	44.5	96.8	50	77.8	130.2	100	85	70
1000	400	0 - 0.089	511	277	236	344	35	14	50	47	183	143	468	131	156	41.5	465	500	450	22	M24	340	44.5	96.8	50	77.8	130.2	100	85	70

Drive shaft Z

¹⁾	Center bore according to DIN 332 (thread according to DIN 13)

Splined shaft DIN 5480

NG	Code	Designation	Thread G	N2	N3	N4	N5	⌀N6
NG	Code	Designation	Thread G	mm	mm	mm	mm	mm
355	Z	W60×2×28×9g	M20 × 2.5	15	42	71	82	70
500	Z	W70×3×22×9g	M20 × 2.5	15	42	67	80	80
710	Z	W90×3×28×9g	M24 × 3	18	50	91	105	100
1000	Z	W90×3×28×9g	M24 × 3	18	50	91	105	100

Drive shaft P

¹⁾	Center bore according to DIN 332 (thread according to DIN 13)

Parallel keyed shaft DIN 6885

NG	Code	Designation	Thread G	⌀N1		N2	N3	N5	⌀N6	N7	N8
NG	Code	Designation	Thread G	mm	mm	mm	mm	mm	mm	mm	mm
355	P	⌀60, AS18×11×100	M20 × 2.5	60	+ 0.03 + 0.011	15	42	105	70	64	18
500	P	⌀70, AS20×12×100	M20 × 2.5	70	+ 0.03 + 0.011	15	42	105	80	74.5	20
710	P	⌀90, AS25×14×125	M24 × 3	90	+ 0.035 + 0.013	18	50	130	100	95	25
1000	P	⌀90, AS25×14×125	M24 × 3	90	+ 0.035 + 0.013	18	50	130	100	95	25

Ports

Size			355	500	710	1000
B (A)	Working port	Size	1 1/2 in		2 in
		Standard	Dimensions according to SAE J518
		Fastening thread ¹⁾	M16 × 2; 21 mm deep		M20 × 2.5; 30 mm deep
		State on delivery	With protective cover (must be connected)
S	Suction port	Size	2 1/2 in	3 in	4 in
		Standard	Dimensions according to SAE J518
		Fastening thread ¹⁾	M12 × 1.75; 17 mm deep	M16 × 2; 24 mm deep
		State on delivery	With protective cover (must be connected)
T₁	Drain port	Size	M33 × 2; 18 mm deep		M42 × 2; 20 mm deep
		Standard ²⁾	DIN 3852
		State on delivery ³⁾	With protective cover (observe installation instructions)
T₂	Drain port	Size	M33 × 2; 18 mm deep		M42 × 2; 20 mm deep
		Standard ²⁾	DIN 3852
		State on delivery ³⁾	Plugged (observe installation instructions)
U	Bearing flushing	Size	M14 × 1.5; 12 mm deep	M18 × 1.5; 12 mm deep
		Standard ²⁾	DIN 3852
		State on delivery	Plugged
M_B (M_A)	Measuring port pressure A, B	Size	M14 × 1.5; 12 mm deep
		Standard ²⁾	DIN 3852
		State on delivery	Plugged
M_S	Measuring port suction pressure	Size	M14 × 1.5; 12 mm deep
		Standard ²⁾	DIN 3852
		State on delivery	Plugged

¹⁾	Thread according to DIN 13
²⁾	The spot face can be deeper than specified in the appropriate standard.
³⁾	Unless otherwise specified. Other layouts on request.

Installation instructions

General

During commissioning and operation, the axial piston unit must be filled with hydraulic fluid and air bled. This must also be observed following a relatively long standstill as the axial piston unit may drain back to the reservoir via the hydraulic lines.

Particularly in the installation position "drive shaft upwards" filling and air bleeding must be carried out completely as there is, for example, a danger of dry running.

The case drain fluid in the housing must be directed to the reservoir via the highest available drain port (T₁,T₂).

If a shared drain line is used for several units, make sure that the respective case pressure is not exceeded. The shared drain line must be dimensioned to ensure that the maximum permissible case pressure of all connected units is not exceeded in any operating conditions, specifically on cold start. If this is not possible, separate reservoir lines must be laid as required.

To achieve favorable noise values, all connecting lines should be decoupled by using elastic elements and above-reservoir installation is to be avoided.

In all operating conditions, the suction and drain lines must lead into the reservoir below the minimum fluid level. The permissible suction height h_S results from the overall loss of pressure; it must not, however, be higher than h_S _max = 800 mm. The minimum suction pressure at port S must also not fall below 0,8 bar absolute during operation and during cold start.

When designing the reservoir, ensure adequate space between the suction line and the drain line.This provides a slow-down and desgasification of the fluid and prevents that heated return flow is being drawn directly back into the suction line.

Installation position

See the following examples 1 to 8.

Further installation positions are possible upon request. Recommended installation position: 1 and 2.

Below-tank installation (standard)

Below-tank installation is at hand if the axial piston unit is installed below the minimum liquid level outside the tank.

Installation position	Air bleeding	Filling
1	\u2012	T₁
2	\u2012	T₂
3	\u2012	T₁
4	R (U)	T₂

Above-reservoir installation

Above-reservoir installation means that the axial piston unit is installed above the minimum fluid level of the reservoir.

Recommendation for installation position 8 (drive shaft upward): A check valve in the drain line (cracking pressure 0,5 bar) can prevent draining of the pump housing.

Installation position	Air bleeding	Filling
5	F	T₁ (F)
6	F	T₂ (F)
7	F	T₁ (F)
8	R (U)	T₂ (F)

Key
F	Filling / Air bleeding
R	Air bleed port
U	Bearing flushing / air bleed port
S	Suction port
T₁, T₂	Drain port
h_t min	Minimum required immersion depth (200 mm)
h_min	Minimum required spacing to reservoir bottom (100 mm)
SB	Baffle (baffle plate)
h_S max	Maximum permissible suction height (800 mm)

Note: Connection F is part of the external piping and must be provided on the customer side to simplify the filling and bleeding.

Note

Connection F is part of the external piping and must be provided on the customer side to simplify the filling and bleeding.

General project planning notes

The axial piston unit is designed to be used in open circuits.

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

Before using the axial piston unit, please read the corresponding instruction manual completely and thoroughly. If necessary, request it from Bosch Rexroth.

Before finalizing your design, request a binding installation drawing.

The specified datas and notes must be observed.

Preservation: Our axial piston units are supplied as standard with preservative protection for a maximum of 12 months. If longer preservative protection is required (maximum 24 months), please specify this in plain text when placing your order. The preservation times are valid under optimal storage conditions. Details of these conditions can be found in the data sheet 90312 or the instruction manual.

A pressure relief valve is to be provided in the hydraulic system.

Observe the instructions in the instruction manual regarding tightening torques of connection threads and other threaded joints used.

The notes in the instruction manual on tightening torques of the port threads and other screw joints must be observed.

The ports and fastening threads are designed for the permissible maximum pressure p_max (see instruction manual). The machine or system manufacturer must ensure that the connecting elements and lines correspond to the specified operating conditions (pressure, flow, hydraulic fluid, temperature) with the necessary safety factors.

The working ports and function ports are designated only to accommodate hydraulic lines.

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Product Category

A2FO series 6x

Table of values

Maximum speed

Note

Hydraulic fluids

Viscosity and temperature of hydraulic fluids

Selection of hydraulic fluid

Selection diagram

Filtration of the hydraulic fluid

Operating pressure range

Note

Pressure definition

Rate of pressure change

Maximum differential pressure at the shaft seal

Note

Direction of flow

Permissible radial and axial forces of the drive shaft

General information

Effect of radial force Fq on the service life of bearings

Toothed gear drive, size 5 \u2026 180

Toothed gear drive, size 200 \u2026 1000

Long-life bearing

Size 250 to 1000

Bearing flushing

Flushing flow (recommended)

Table of values

Maximum speed

Note

Hydraulic fluids

Viscosity and temperature of hydraulic fluids

Selection of hydraulic fluid

Selection diagram

Filtration of the hydraulic fluid

Operating pressure range

Note

Pressure definition

Rate of pressure change

Maximum differential pressure at the shaft seal

Note

Direction of flow

Permissible radial and axial forces of the drive shaft

General information

Effect of radial force Fq on the service life of bearings

Toothed gear drive, size 5 \u2026 180

Toothed gear drive, size 200 \u2026 1000

Long-life bearing

Size 250 to 1000

Bearing flushing

Flushing flow (recommended)

Size 5

Drive shafts

Ports

Size 10 \u2026 16

Drive shafts Z and A

Drive shafts P and B

Ports

Size 23 \u2026 180

Drive shafts Z and A

Splined shaft DIN 5480

Drive shafts P and B

Parallel keyed shaft DIN 6885

Ports

Size 200

Drive shafts

Ports

Size 250

Drive shafts

Ports

Size 355 \u2026 1000

Drive shaft Z

Splined shaft DIN 5480

Drive shaft P

Parallel keyed shaft DIN 6885

Ports

Size 5

Drive shafts

Ports

Size 10 \u2026 16

Drive shafts Z and A

Effect of radial force F_qon the service life of bearings

Effect of radial force F_qon the service life of bearings