A2FM series 70

3 pressure ranges to fit to different customer requirements and applications
Very high power density
Very high total efficiency
High starting efficiency
Robust 40° bent-axis technology
Optional with integrated flushing valve
Bent-axis design

¹⁾	For A2FM onlyN available (pressure range 300 to 350 bar)
²⁾	Not for A2FMH available (pressure range 450 to 500 bar)

¹⁾	Not available for A2FMH

Table of values

Size				56	63	80	90	107	45	56	63	80	90	45	56	63	80	90
Version				A2FMN					A2FMM					A2FMH
Displacement geometric, per revolution		V_g	cm³	56.6	63	81.7	90.5	108.8	44.9	56.6	63	79.8	90.5	44.9	56.6	63	79.8	90.5
Nominal pressure		p_nom	bar	300	300	300	300	300	400	400	400	400	400	450	450	450	450	450
Maximum pressure		p_max	bar	350	350	350	350	350	450	450	450	450	450	500	500	500	500	500
Maximum speed		n_nom ¹⁾	rpm	3750	3750	3375	3375	3000	5000	5000	5000	4500	4500	5000	5000	5000	4500	4500
Maximum speed		n_max ²⁾	rpm	4125	4125	3700	3700	3300	5500	5500	5500	5000	5000	5500	5500	5500	5000	5000
Inlet flow	at n_nom	q_V	l/min	210	236	270	270	321	225	280	315	360	405	225	280	315	360	405
Torque ³⁾	at p_nom	M	Nm	270	301	390	432	519	286	360	401	508	576	322	405	451	571	648
Rotary stiffness		c	kNm/rad	6.83	8.09	7.94	9.84	10.9	4.52	6.83	8.09	9.09	9.84	4.52	6.83	8.09	9.09	9.84
Moment of inertia for rotary group		J_TW	kg·m²	0.0032	0.0032	0.0034	0.0054	0.0061	0.0032	0.0032	0.0032	0.0058	0.0054	0.0032	0.0032	0.0032	0.0058	0.0054
Maximum angular acceleration		ɑ	rad/s²	10000	12200	19800	4500	6000	5400	9000	11100	4500	4500	5000	8550	10500	4500	4500
Case volume		V	l	0.6	0.6	0.6	0.65	0.65	0.6	0.6	0.6	0.65	0.65	0.6	0.6	0.6	0.65	0.65
Weight (approx.)		m	kg	17	17	17	23	23	17	17	17	23	23	17	17	17	23	23

¹⁾	These values are valid at: - for the optimum viscosity range from v_opt = 36 to 16 mm²/s - with hydraulic fluid based on mineral oils
²⁾	Intermittent maximum speed: overspeed for unload and overhauling processest, t < 5 s and Δp < 150 bar
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 found in data sheet 90261.

▪

Speed range

No limit to minimum speed n_min. If uniformity of motion is required, speed n_min must not be less than 50 rpm.

Determining the operating characteristics
Inlet flow		[l/min]
Rotational speed		[rpm]
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-resistant, water-containing hydraulic fluids (HFAE, HFAS, HFB, HFC)

The axial piston unit is not suitable for operation with HFA hydraulic fluid.

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)

Note

To reduce high temperature of the hydraulic fluid in the axial piston unit we recommend the use of a flushing and boost pressure valve (see chapter Extended functions and versions).

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.
Minimum pressure at inlet (pump operating mode)	p_E min	see diagram	To prevent damage to the axial piston motor in pump mode (change of high-pressure side with unchanged direction of rotation, e.g. when braking),a minimum pressure must be guaranteed at the working port (inlet). The minimum pressure depends on the rotational speed and displacement of the axial piston unit.
Total pressure	p_Su	700 bar	The summation pressure is the sum of the pressures at both work ports (A and B).
Rate of pressure change			Definition
with integrated pressure relief valve	R_A max	9000 bar/s	Maximum permissible rate of pressure build-up and reduction during a pressure change over the entire pressure range.
without pressure relief valve	R_A max	16000 bar/s
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 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.

▪

Minimum pressure at inlet (pump operating mode)

This diagram is only valid for the optimum viscosity range of v_opt = 16 to 36 mm²/sec..

If the above mentioned conditions cannot be ensured, please contact us.

Pressure definition

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

Rate of pressure change

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
A to B	B to A

Permissible radial and axial forces of the drive shaft

Size			56				63			80				90			107			45		56				63			80				90			45		56				63			80				90
Version			A2FMN																	A2FMM																A2FMH
Drive shaft	Code		V8	S7	P6	P8	V8	S7	P8	V8	S7	P8	P9	V8	S7	P9	V8	S7	P9	S7	P6	V8	S7	P6	P8	V8	S7	P8	V8	S7	P8	P9	V8	S7	P9	S7	P6	V8	S7	P6	P8	V8	S7	P8	V8	S7	P8	P9	V8	S7	P9
	⌀	in	1 3/8 in	1 1/4 in			1 3/8 in	1 1/4 in		1 3/8 in	1 1/4 in			1 3/8 in	1 1/4 in		1 3/8 in	1 1/4 in		1 1/4 in		1 3/8 in	1 1/4 in			1 3/8 in	1 1/4 in		1 3/8 in	1 1/4 in			1 3/8 in	1 1/4 in		1 1/4 in		1 3/8 in	1 1/4 in			1 3/8 in	1 1/4 in		1 3/8 in	1 1/4 in			1 3/8 in	1 1/4 in
	⌀	mm			30	35			35			35	40			40			40		30			30	35			35			35	40			40		30			30	35			35			35	40			40
Maximum radial force at distance a (from shaft collar)	F_q max	kN	6.1	6.7	6.1	6.1	7.6	7.6	6.9	8.8	9.5	8.7	7.6	9.8	9.4	9.8	11.9	9.4	10.4	7.2	7.6	8.2	9	9.5	8.1	9.2	9.5	9.2	11.7	9.4	11.6	10.2	13.1	9.4	11.5	8.1	8.6	9.2	9	10.7	9.2	10.3	9.5	10.3	13.1	9.5	10.3	11.5	13.1	9.4	12.9
Maximum radial force at distance a (from shaft collar)	a	mm	24	24	18	18	24	24	18	24	24	18	18	24	24	20	24	24	20	24	18	24	24	18	18	24	24	18	24	24	20	20	24	24	20	24	18	24	24	18	18	24	24	18	24	24	20	20	24	24	20
Permitted torque at F_q max	T_q max	Nm	267	267	267	267	301	301	301	382	376	382	382	430	372	430	519	372	519	286	286	357	357	357	357	401	376	401	509	373	509	509	573	372	573	322	322	401	357	401	401	451	376	451	573	376	573	573	573	372	645
Permitted differential pressure at F_q max	Δp_q max	bar	300	300	300	300	300	300	300	300	295	300	300	300	260	300	300	215	300	400	400	400	400	400	400	400	375	400	400	293	400	400	400	260	400	450	450	450	400	450	450	450	375	450	450	375	450	450	400	260	450
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	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
	- F_ax max	N	800	800	800	800	800	800	800	800	800	800	800	1000	1000	1000	1000	1000	1000	800	800	800	800	800	800	800	800	800	1000	1000	1000	1000	1000	1000	1000	800	800	800	800	800	800	800	800	800	1000	800	1000	1000	1000	1000	1000
Maximum axial force, per bar operating pressure	+ F_ax max	N/bar	8.7	8.7	8.7	8.7	8.7	8.7	8.7	8.7	8.7	8.7	8.7	10.6	10.6	10.6	10.6	10.6	10.6	8.7	8.7	8.7	8.7	8.7	8.7	8.7	8.7	8.7	10.6	10.6	10.6	10.6	10.6	10.6	10.6	8.7	8.7	8.7	8.7	8.7	8.7	8.7	8.7	8.7	10.6	8.7	10.6	10.6	10.6	10.6	10.6

General instructions

The values given are maximum values and do not apply to continuous operation.

▪

The axial force in direction −F _ax is to be avoided as the service life of the bearing is reduced.

▪

Special requirements apply in the case of belt drives. 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

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

Observe the instructions for the filtration of the hydraulic fluid (see chapter Project planning information).

Size	56	63	80	90	107	45	56	63	80	90	45	56	63	80	90
Version	A2FMN	A2FMM	A2FMH
Displacement geometric, per revolution	V_g	cm³	56.6	63	81.7	90.5	108.8	44.9	56.6	63	79.8	90.5	44.9	56.6	63	79.8	90.5
Nominal pressure	p_nom	bar	300	300	300	300	300	400	400	400	400	400	450	450	450	450	450
Maximum pressure	p_max	bar	350	350	350	350	350	450	450	450	450	450	500	500	500	500	500
Maximum speed	n_nom ¹⁾	rpm	3750	3750	3375	3375	3000	5000	5000	5000	4500	4500	5000	5000	5000	4500	4500
n_max ²⁾	rpm	4125	4125	3700	3700	3300	5500	5500	5500	5000	5000	5500	5500	5500	5000	5000
Inlet flow	at n_nom	q_V	l/min	210	236	270	270	321	225	280	315	360	405	225	280	315	360	405
Torque ³⁾	at p_nom	M	Nm	270	301	390	432	519	286	360	401	508	576	322	405	451	571	648
Rotary stiffness	c	kNm/rad	6.83	8.09	7.94	9.84	10.9	4.52	6.83	8.09	9.09	9.84	4.52	6.83	8.09	9.09	9.84
Moment of inertia for rotary group	J_TW	kg·m²	0.0032	0.0032	0.0034	0.0054	0.0061	0.0032	0.0032	0.0032	0.0058	0.0054	0.0032	0.0032	0.0032	0.0058	0.0054
Maximum angular acceleration	ɑ	rad/s²	10000	12200	19800	4500	6000	5400	9000	11100	4500	4500	5000	8550	10500	4500	4500
Case volume	V	l	0.6	0.6	0.6	0.65	0.65	0.6	0.6	0.6	0.65	0.65	0.6	0.6	0.6	0.65	0.65
Weight (approx.)	m	kg	17	17	17	23	23	17	17	17	23	23	17	17	17	23	23

Determining the operating characteristics
Inlet flow		[l/min]
Rotational speed		[rpm]
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.
Minimum pressure at inlet (pump operating mode)	p_E min	see diagram	To prevent damage to the axial piston motor in pump mode (change of high-pressure side with unchanged direction of rotation, e.g. when braking),a minimum pressure must be guaranteed at the working port (inlet). The minimum pressure depends on the rotational speed and displacement of the axial piston unit.
Total pressure	p_Su	700 bar	The summation pressure is the sum of the pressures at both work ports (A and B).
Rate of pressure change	Definition
with integrated pressure relief valve	R_A max	9000 bar/s	Maximum permissible rate of pressure build-up and reduction during a pressure change over the entire pressure range.
without pressure relief valve	R_A max	16000 bar/s
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 peaks	p_T _peak	10 bar	t < 0.1 s

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

Size	56	63	80	90	107	45	56	63	80	90	45	56	63	80	90
Version	A2FMN	A2FMM	A2FMH
Drive shaft	Code	V8	S7	P6	P8	V8	S7	P8	V8	S7	P8	P9	V8	S7	P9	V8	S7	P9	S7	P6	V8	S7	P6	P8	V8	S7	P8	V8	S7	P8	P9	V8	S7	P9	S7	P6	V8	S7	P6	P8	V8	S7	P8	V8	S7	P8	P9	V8	S7	P9
⌀	in	1 3/8 in	1 1/4 in			1 3/8 in	1 1/4 in		1 3/8 in	1 1/4 in			1 3/8 in	1 1/4 in		1 3/8 in	1 1/4 in		1 1/4 in		1 3/8 in	1 1/4 in			1 3/8 in	1 1/4 in		1 3/8 in	1 1/4 in			1 3/8 in	1 1/4 in		1 1/4 in		1 3/8 in	1 1/4 in			1 3/8 in	1 1/4 in		1 3/8 in	1 1/4 in			1 3/8 in	1 1/4 in
⌀	mm			30	35			35			35	40			40			40		30			30	35			35			35	40			40		30			30	35			35			35	40			40
Maximum radial force at distance a (from shaft collar)		F_q max	kN	6.1	6.7	6.1	6.1	7.6	7.6	6.9	8.8	9.5	8.7	7.6	9.8	9.4	9.8	11.9	9.4	10.4	7.2	7.6	8.2	9	9.5	8.1	9.2	9.5	9.2	11.7	9.4	11.6	10.2	13.1	9.4	11.5	8.1	8.6	9.2	9	10.7	9.2	10.3	9.5	10.3	13.1	9.5	10.3	11.5	13.1	9.4	12.9
a	mm	24	24	18	18	24	24	18	24	24	18	18	24	24	20	24	24	20	24	18	24	24	18	18	24	24	18	24	24	20	20	24	24	20	24	18	24	24	18	18	24	24	18	24	24	20	20	24	24	20
Permitted torque at F_q max	T_q max	Nm	267	267	267	267	301	301	301	382	376	382	382	430	372	430	519	372	519	286	286	357	357	357	357	401	376	401	509	373	509	509	573	372	573	322	322	401	357	401	401	451	376	451	573	376	573	573	573	372	645
Permitted differential pressure at F_q max	Δp_q max	bar	300	300	300	300	300	300	300	300	295	300	300	300	260	300	300	215	300	400	400	400	400	400	400	400	375	400	400	293	400	400	400	260	400	450	450	450	400	450	450	450	375	450	450	375	450	450	400	260	450
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	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
- F_ax max	N	800	800	800	800	800	800	800	800	800	800	800	1000	1000	1000	1000	1000	1000	800	800	800	800	800	800	800	800	800	1000	1000	1000	1000	1000	1000	1000	800	800	800	800	800	800	800	800	800	1000	800	1000	1000	1000	1000	1000
Maximum axial force, per bar operating pressure	+ F_ax max	N/bar	8.7	8.7	8.7	8.7	8.7	8.7	8.7	8.7	8.7	8.7	8.7	10.6	10.6	10.6	10.6	10.6	10.6	8.7	8.7	8.7	8.7	8.7	8.7	8.7	8.7	8.7	10.6	10.6	10.6	10.6	10.6	10.6	10.6	8.7	8.7	8.7	8.7	8.7	8.7	8.7	8.7	8.7	10.6	8.7	10.6	10.6	10.6	10.6	10.6

Port plate 11

SAE working ports at bottom

Version	Size	D1	D3	D4	D7	D8	D9	D12	D13	D14	D15	D17	D18	D19	D20	D25	D26	D29	D33	D40	D41	D42	D46	D47
Version	Size	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm
A2FMN	56	127	196.7	122	162	20	12.7	86	172.7	122	172.7	30	150.2	127	117.2	146	146	14.3	141	23.8	50.8	19	75	20
	63	127	196.7	122	162	20	12.7	86	172.7	122	172.7	30	150.2	127	117.2	146	146	14.3	141	23.8	50.8	19	75	20
	80	127	196.7	122	162	20	12.7	86	172.7	122	172.7	30	150.2	127	117.2	146	146	14.3	141	23.8	50.8	19	75	20
	90	127	222.5	148.5	162	20	12.7	101.5	195.5	142	195.5	30	169.5	127	135	146	142	14.3	159	27.8	57.2	25	84	25
	107	127	222.5	148.5	162	20	12.7	101.5	195.5	142	195.5	30	169.5	127	135	146	142	14.3	159	27.8	57.2	25	84	25
A2FMM	45	127	196.7	122	162	20	12.7	86	172.7	122	172.7	30	150.2	127	117.2	146	146	14.3	141	23.8	50.8	19	75	20
	56	127	196.7	122	162	20	12.7	86	172.7	122	172.7	30	150.2	127	117.2	146	146	14.3	141	23.8	50.8	19	75	20
	63	127	196.7	122	162	20	12.7	86	172.7	122	172.7	30	150.2	127	117.2	146	146	14.3	141	23.8	50.8	19	75	20
	80	127	222.5	148.5	162	20	12.7	101.5	195.5	142	195.5	30	169.5	127	135	146	142	14.3	159	27.8	57.2	25	84	25
	90	127	222.5	148.5	162	20	12.7	101.5	195.5	142	195.5	30	169.5	127	135	146	142	14.3	159	27.8	57.2	25	84	25
A2FMH	45	127	172.7	122	162	20	12.7	86	172.7	122	172.7	30	150.2	127	117.2	146	146	14.3	141	23.8	50.8	19	75	20
	56	127	172.7	122	162	20	12.7	86	172.7	122	172.7	30	150.2	127	117.2	146	146	14.3	141	23.8	50.8	19	75	20
	63	127	172.7	122	162	20	12.7	86	172.7	122	172.7	30	150.2	127	117.2	146	146	14.3	141	23.8	50.8	19	75	20
	80	127			162	20	12.7	101.5	195.5	142	195.5	30	169.5	127	135	146	142	14.3	159	27.8	57.2	25	84	25
	90	127			162	20	12.7	101.5	195.5	142	195.5	30	169.5	127	135	146	142	14.3	159	27.8	57.2	25	84	25

Port plate 02

SAE working ports at side, opposite

Version	Size	D1	D3	D4	D7	D8	D9	D12	D13	D14	D15	D17	D18	D19	D20	D25	D26	D29	D33	D40	D41	D42	D46	D47
Version	Size	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm
A2FMN	56	127	196.7	122	162	20	12.7	86	172.7	122	172.7	30	150.2	127	117.2	146	146	14.3	141	23.8	50.8	19	75	20
	63	127	196.7	122	162	20	12.7	86	172.7	122	172.7	30	150.2	127	117.2	146	146	14.3	141	23.8	50.8	19	75	20
	80	127	196.7	122	162	20	12.7	86	172.7	122	172.7	30	150.2	127	117.2	146	146	14.3	141	23.8	50.8	19	75	20
	90	127	222.5	148.5	162	20	12.7	101.5	195.5	142	195.5	30	169.5	127	135	146	142	14.3	159	27.8	57.2	25	84	25
	107	127	222.5	148.5	162	20	12.7	101.5	195.5	142	195.5	30	169.5	127	135	146	142	14.3	159	27.8	57.2	25	84	25
A2FMM	45	127	196.7	122	162	20	12.7	86	172.7	122	172.7	30	150.2	127	117.2	146	146	14.3	141	23.8	50.8	19	75	20
	56	127	196.7	122	162	20	12.7	86	172.7	122	172.7	30	150.2	127	117.2	146	146	14.3	141	23.8	50.8	19	75	20
	63	127	196.7	122	162	20	12.7	86	172.7	122	172.7	30	150.2	127	117.2	146	146	14.3	141	23.8	50.8	19	75	20
	80	127	222.5	148.5	162	20	12.7	101.5	195.5	142	195.5	30	169.5	127	135	146	142	14.3	159	27.8	57.2	25	84	25
	90	127	222.5	148.5	162	20	12.7	101.5	195.5	142	195.5	30	169.5	127	135	146	142	14.3	159	27.8	57.2	25	84	25
A2FMH	45	127	172.7	122	162	20	12.7	86	172.7	122	172.7	30	150.2	127	117.2	146	146	14.3	141	23.8	50.8	19	75	20
	56	127	172.7	122	162	20	12.7	86	172.7	122	172.7	30	150.2	127	117.2	146	146	14.3	141	23.8	50.8	19	75	20
	63	127	172.7	122	162	20	12.7	86	172.7	122	172.7	30	150.2	127	117.2	146	146	14.3	141	23.8	50.8	19	75	20
	80	127			162	20	12.7	101.5	195.5	142	195.5	30	169.5	127	135	146	142	14.3	159	27.8	57.2	25	84	25
	90	127			162	20	12.7	101.5	195.5	142	195.5	30	169.5	127	135	146	142	14.3	159	27.8	57.2	25	84	25

Drive shafts

Overview of available drive shafts

A2FMN

Size			56				63			80				90			107
Drive shafts		Code	V8	S7	P6	P8	V8	S7	P8	V8	S7	P8	P9	V8	S7	P9	V8	S7	P9

A2FMM

Size			45		56				63			80				90
Drive shafts		Code	S7	P6	V8	S7	P6	P8	V8	S7	P8	V8	S7	P8	P9	V8	S7	P9

A2FMH

Size			45		56				63			80				90
Drive shafts		Code	S7	P6	V8	S7	P6	P8	V8	S7	P8	V8	S7	P8	P9	V8	S7	P9

Splined shaft SAE J744

¹⁾	Involute spline according to ANSI B92.1a, 30° pressure angle, flat root, side fit, tolerance class 5
²⁾	Thread according to ASME B1.1
³⁾	Center bore according to DIN 332 (thread according to DIN 13)
⁴⁾	For sizes to 63 and size 80 pressure range "N"
⁵⁾	For sizes from 80, excluding size 80 pressure range "N"

Parallel keyed shaft DIN 6885

¹⁾	Involute spline according to ANSI B92.1a, 30° pressure angle, flat root, side fit, tolerance class 5
²⁾	Thread according to ASME B1.1
³⁾	Center bore according to DIN 332 (thread according to DIN 13)
⁴⁾	For sizes to 63 and size 80 pressure range "N"
⁵⁾	For sizes from 80, excluding size 80 pressure range "N"

Ports

Size			56	63	80	90	107	45	56	63	80	90	45	56	63	80	90
Version			A2FMN					A2FMM					A2FMH
A, B	Working port	Size	3/4 in			1 in		3/4 in			1 in		3/4 in			1 in
		Standard	Dimensions according to SAE J518
		Fastening thread	3/8-16UNC-2B; 21 mm deep			7/16-14UNC-2B; 19 mm deep		3/8-16UNC-2B; 21 mm deep			7/16-14UNC-2B; 19 mm deep		3/8-16UNC-2B; 21 mm deep			7/16-14UNC-2B; 19 mm deep
		State on delivery	With protective cover (must be connected)
T₁	Drain port	Size	3/4-16UNF-2B; 15 mm deep			7/8-14UNF-2B; 17 mm deep		3/4-16UNF-2B; 15 mm deep			7/8-14UNF-2B; 17 mm deep		3/4-16UNF-2B; 15 mm deep			7/8-14UNF-2B; 17 mm deep
		Standard ¹⁾	ISO 11926
		State on delivery	Plugged (observe installation instructions)
T₂	Drain port	Size	3/4-16UNF-2B; 15 mm deep			7/8-14UNF-2B; 17 mm deep		3/4-16UNF-2B; 15 mm deep			7/8-14UNF-2B; 7 mm deep		3/4-16UNF-2B; 15 mm deep			7/8-14UNF-2B; 17 mm deep
		Standard ¹⁾	ISO 11926
		State on delivery	With protective cover (observe installation instructions)

¹⁾	The spot face can be deeper than specified in the appropriate standard.

Size			56	63	80	90	107
Drive shafts		Code	V8	S7	P6	P8	V8	S7	P8	V8	S7	P8	P9	V8	S7	P9	V8	S7	P9

Size			45	56	63	80	90
Drive shafts		Code	S7	P6	V8	S7	P6	P8	V8	S7	P8	V8	S7	P8	P9	V8	S7	P9

Size			45	56	63	80	90
Drive shafts		Code	S7	P6	V8	S7	P6	P8	V8	S7	P8	V8	S7	P8	P9	V8	S7	P9

Size	56	63	80	90	107	45	56	63	80	90	45	56	63	80	90
Version	A2FMN	A2FMM	A2FMH
A, B	Working port	Size	3/4 in	1 in	3/4 in	1 in	3/4 in	1 in
Standard	Dimensions according to SAE J518
Fastening thread	3/8-16UNC-2B; 21 mm deep	7/16-14UNC-2B; 19 mm deep	3/8-16UNC-2B; 21 mm deep	7/16-14UNC-2B; 19 mm deep	3/8-16UNC-2B; 21 mm deep	7/16-14UNC-2B; 19 mm deep
State on delivery	With protective cover (must be connected)
T₁	Drain port	Size	3/4-16UNF-2B; 15 mm deep	7/8-14UNF-2B; 17 mm deep	3/4-16UNF-2B; 15 mm deep	7/8-14UNF-2B; 17 mm deep	3/4-16UNF-2B; 15 mm deep	7/8-14UNF-2B; 17 mm deep
Standard ¹⁾	ISO 11926
State on delivery	Plugged (observe installation instructions)
T₂	Drain port	Size	3/4-16UNF-2B; 15 mm deep	7/8-14UNF-2B; 17 mm deep	3/4-16UNF-2B; 15 mm deep	7/8-14UNF-2B; 7 mm deep	3/4-16UNF-2B; 15 mm deep	7/8-14UNF-2B; 17 mm deep
Standard ¹⁾	ISO 11926
State on delivery	With protective cover (observe installation instructions)

Installation information

General information

During commissioning and during operation, the axial piston unit must be filled with hydraulic fluid and bled. This must also be observed during longer standstill as the axial piston unit might drain itself via the hydraulic lines.

▪

Complete filling and bleeding must especially be ensured with the \u201cDrive shaft upwards\u201d installation position as there is, for example, the risk of running dry.

▪

The leakage in the housing area must be discharged to the tank via the highest-located drain port ( T ₁, T ₂).

▪

If one joint drain line is used for several units, it is to be ensured that the relevant housing pressure is not exceeded. The joint drain line must be dimensioned so that the maximum admissible housing pressure of all connected units is not exceeded in any operating state, particularly during cold start. If this is not possible, separate drain lines have to be laid, if necessary.

▪

In order to achieve favorable noise values, all connection lines are to be decoupled using elastic elements and over-tank installation is to be avoided.

▪

The tank line must lead into the tank below the minimum liquid level in every operating state.

▪

Installation position

See the following examples 1 to 8.

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

Note

For installation position 4 and 8 "shaft upwards" an air bleed port R is required (specify in plain text when ordering, special version).

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	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	T₂ (F)

Key
F	Filling / Air bleeding
R	Air bleed port
T₁, T₂	Drain port
h_{t min}	Minimum required immersion depth (200 mm)
h_min	Minimum required spacing to reservoir bottom (100 mm)

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 and closed 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.

▪

Not all versions of the product are approved for use in a safety function according to ISO 13849. Please consult the responsible contact person at Bosch Rexroth if you require reliability parameters (e.g. MTTF _D) for functional safety.

▪

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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