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FeaturesFixed motor with axial tapered piston rotary group of bent- –axis design, for hydrostatic drives in open circuits
For use in mobile and stationary applications –
The output speed depends on the flow of the pump and the –displacement of the motor.
The output torque increases with the pressure differential –between the high and low-pressure side and with increasing displacement
Finely graded sizes provide for good adaptation to the re- –quired drive application
With integrated check valve for discharge of flywheel mass. –
High efficiency and cost-effective start-up efficiency –
High power density –
High speed –
Low-noise operation –
Compact dimensions and low mass –
Robust bearings –
For absorbing radial forces -
For saving on collar bearings -
For direct mounting of fan wheel -
ContentsOrdering code for standard program 2
Technical data 3
Port plate with integrated check valve 8
Dimensions size 10, 12, 16 9
Dimensions size 23, 28, 32 10
Dimensions size 45 11
Dimensions size 56, 63 12
Dimensions size 80, 90 13
Dimensions size 107, 125 14
Installation instructions 15
General instructions 16
Linear Motion andAssembly Technologies ServicePneumaticsHydraulics
Electric Drives and Controls
Data sheet
Axial Piston Fixed Motor A2FNM for Fan Drives and Flywheel Mass
RE 91007/02.11 1/16
Series 61Sizes 10 to 125Nominal pressure 300 barMaximum pressure 350 barOpen circuit
Axial piston unit
01Bent-axis design, fixed, nominal pressure 300 bar, maximum pressure 350 bar, with single direction of rotation for fan drive and flywheel mass A2FN
Operating mode02 Motor M
Size (NG)
03Geometric displacement, see table of values on page 6 10 12 16 23 28 32 45 56 63 80 90 107 125
Series04 Series 6, index 1 61
Direction of rotation
05Viewed on drive shaft clockwise R
counter-clockwise L
Seals06 FKM (fluor-caoutchouc) V
Drive shaft 10 12 16 23 28 32 45 56 63 80 90 107 125
07
Splined shaft DIN 5480 – A
– – – – – – – – – – – – Z
Parallel keyed shaft, DIN 6885 – B
– – – – – – – – – – – – P
Mounting flange08 ISO 3019-2 – 4-hole B
Port plate for service lines1)Direction of rotation 10 12 16 23 28 32 45 56 63 80 90 107 125
09
Threaded ports A and B, bottom ccw – – – m – – – – – –16
cw m m m – – – – – – – – – –
Threaded ports A and B, 1x side and 1x rear
ccw m m m – – – m m m – –48
cw m m m – – – m m m – –
SAE flange ports A and B, 1x side and 1x rear
ccw – – – m m m – – – – – – –49
cw – – – m m m – – – – – – –
SAE flange ports A and B, bottom ccw – – – – – – – – – m m34
cw – – – – – – – – – – – m m
Valves
10Integrated check valve without flushing notch A
with standard flushing notch from return line B
Standard / special version
11Standard version
Special version -S
NoteShort designation X on a feature refers to a special version not covered by the ordering code.
= Available m = On request – = Not available
Fastening thread or threaded ports, metric1)
A2FN M / 61 – V B01 02 03 04 05 06 07 08 09 10 11
Ordering code for standard program
2/16 Bosch Rexroth AG A2FNM Series 61 RE 91007/02.11
Technical dataHydraulic fluidBefore starting project planning, please refer to our data sheets RE 90220 (mineral oil), RE 90221 (environmentally acceptable hydraulic fluids) and RE 90223 (HF hydraulic fluids) for detailed information regarding the choice of hydraulic fluid and application conditions.
The fixed motor A2FNM is not suitable for operation with HFA hydraulic fluid. If HFB, HFC and HFD or environmentally acceptable hydraulic fluids are being used, the limitations regarding technical data and seals mentioned in RE 90221 and RE 90223 must be observed.
When ordering, indicate the hydraulic fluid that is to be used.
Selection diagram
tmin = -40 °C tmax = +115 °C
-40° -25° -10° 10° 30° 50° 90° 115°70°0°5
10
4060
20
100
200
400600
10001600
-40° 0° 20° 40° 60° 80° 100°-20°1600
νopt
16
36
VG 22
VG 32
VG 46
VG 68
VG 100
5
Visc
osity
ν [
mm
2 /s]
Hydraulic fluid temperature range
Temperature t [°C]
Details regarding the choice of hydraulic fluid
The correct choice of hydraulic fluid requires knowledge of the operating temperature in relation to the ambient temperature: in an open circuit the reservoir temperature.
The hydraulic fluid should be chosen so that the operating viscosity in the operating temperature range is within the optimum range (νopt.), see shaded area of the selection diagram. We recommended that the higher viscosity class be selected in each case.
Example: At an ambient temperature of X °C, an operating temperature of 60 °C is set in the circuit. In the optimum oper-ating viscosity range (νopt., shaded area), this corresponds to the viscosity classes VG 46 or VG 68; to be selected: VG 68.
Note The case drain temperature, which is affected by pressure and speed, is always higher than the reservoir temperature. At no point of the component may the temperature be higher than 115 °C, however. The temperature difference specified below is to be taken into account when determining the viscosity in the bearing.
If the above conditions cannot be maintained due to extreme operating parameters, please contact us.
Viscosity and temperature
Viscosity [mm2/s] Temperature CommentTransport and storage Tmin ≥ -50 °C
Topt = +5 °C to +20 °Cup to 12 months with standard factory preservation up to 24 months with long-term factory preservation
(Cold) start-up1) νmax = 1600 TSt ≥ -40 °C t ≤ 3 min, without load (p ≤ 50 bar), n ≤ 1000 rpmPermissible tempe rature difference DT ≤ 25 K between axial piston unit and hydraulic fluid
Warm-up phase ν < 1600 to 400 T = -40 °C to -25 °C at pnom, 0.5 • nnom and t ≤ 15 minOperating phase
Temperature difference DT = approx. 12 K between hydraulic fluid in the bearing and the case drain fluid at port T.
Maximum temperature 115 °C in bearing
103 °C measured at port T
Continuous operation ν = 400 to 10 νopt = 16 to 36
T = -25 °C to +90 °C measured at port T, no restriction within the permissible data
Short-term operation νmin < 10 to 5 Tmax = +103 °C measured at port T, t < 3 min, p < 0.3 • pnom
FKM shaft seal1) T ≤ +115 °C see page 4
At temperatures below -25°C, an NBR shaft seal is required (permissible temperature range: -40 °C to +90 °C).1)
A2FNM Series 61 RE 91007/02.11 Bosch Rexroth AG 3/16
Technical dataDirection of flowDirection of rotation, viewed on drive shaft
cw ccw
A to B B to A
Speed rangeNo limit to minimum speed nmin. If uniformity of motion is required, speed nmin must not be less than 50 rpm. See table of values on page 6 for maximum speed.
Filtration of the hydraulic fluidFiner filtration improves the cleanliness level of the hydraulic fluid, which increases the service life of the axial piston unit.
To ensure the functional reliability of the axial piston unit, a gravimetric analysis of the hydraulic fluid is necessary to determine the amount of solid contaminant and to determine the cleanliness level according to ISO 4406. A cleanliness level of at least 20/18/15 is to be maintained.
At very high hydraulic fluid temperatures (90 °C to maximum 115 °C), a cleanliness level of at least 19/17/14 according to ISO 4406 is necessary.
If the above classes cannot be achieved, please contact us.
Shaft seal
Permissible pressure loading
The service life of the shaft seal is affected by the speed of the motor and the case drain pressure. It is recommended that the average, continuous case drain pressure of 3 bar absolute at operating temperature is not exceeded (maximum permissible case drain pressure 6 bar absolute at reduced speed, see diagram). Short-term (t < 0.1 s) pressure spikes of up to 10 bar absolute are permitted. The service life of the shaft seal de-creases with an increase in the frequency of pressure spikes.
The case pressure must be equal to or greater than the exter-nal pressure on the shaft seal.
Speed n [rpm]
NG107, 125
NG80, 90
7000 80005000 600040002000 30000 10001
2
3
4
5
6NG10, 12, 16
NG23, 28, 32NG56, 63
NG45
Per
m. p
ress
ure
p abs
max
[ba
r]
Temperature range
The FKM shaft seal may be used for case drain temperatures from -25 °C to +115 °C.
NoteFor application cases below -25 °C, an NBR shaft seal is required (permissible temperature range: -40 °C to +90 °C). State NBR shaft seal in plain text when ordering. Please contact us.
4/16 Bosch Rexroth AG A2FNM Series 61 RE 91007/02.11
Technical dataOperating pressure range
Pressure at service line port A or B
Nominal pressure pnom _________________ 300 bar absolute
Maximum pressure pmax _______________ 350 bar absolute Single operating period ____________________________ 10 s Total operating period _____________________________ 300 h
Minimum pressure (high-pressure side) __________ 25 bar
Rate of pressure change RA max ______________ 9000 bar/s
pnom
Dt
Dp
Time t
Pre
ssur
e p
Minimum pressure – pump mode (inlet)To prevent damage to the axial piston motor in pump mode, a minimum pressure must be ensured at the service line port (inlet). The minimum required pressure is dependent on the speed of the axial piston unit (see chart below).
1.00.80.60.40.2012
4
6
8
10
12
Min
imum
pre
ssur
e (in
let)
, abs
olut
e [b
ar]
Speed n / nnom
This diagram is valid only for the optimum viscosity range from νopt = 16 to 36 mm2/s. Please contact us if these conditions cannot be satisfied.
Definition
Nominal pressure pnom
The nominal pressure corresponds to the maximum design pressure.
Maximum pressure pmax
The maximum pressure corresponds to the maximum operat-ing pressure within the single operating period. The sum of the single operating periods must not exceed the total operating period.
Minimum pressure (high-pressure side)Minimum pressure at the high-pressure side (A or B) which is required in order to prevent damage to the axial piston unit.
Rate of pressure change RA
Maximum permissible rate of pressure rise and reduction during a pressure change over the entire pressure range.
Pre
ssur
e p t1
t2 tnSingle operating period
Minimum pressure (high-pressure side)
Maximum pressure pmaxNominal pressure pnom
Time t
Total operating period = t1 + t2 + ... + tn
A2FNM Series 61 RE 91007/02.11 Bosch Rexroth AG 5/16
Technical dataTable of values (theoretical values, without efficiency and tolerances; values rounded)
Size NG 10 12 16 23 28 32 45
Displacement, geometric, per revolution
Vg cm3 10.3 12 16 22.9 28.1 32 45.6
Speed maximum1) nnom rpm 8000 8000 8000 6300 6300 6300 5600
Input flow at Vg and nnom qV max l/min 82 96 128 144 176 201 255
Torque at Vg and Dp = 300 bar T Nm 49 57 76 109 134 153 218
Rotary stiffness of drive shaft c Nm/rad 922 1250 1590 2560 2930 3120 4180
Moment of inertia for rotary group JGR kgm2 0.0004 0.0004 0.0004 0.0012 0.0012 0.0012 0.0024
Maximum angular acceleration a rad/s2 5000 5000 5000 6500 6500 6500 14600
Case volume V L 0.17 0.17 0.17 0.20 0.20 0.20 0.33
Mass (approx.) m kg 5.4 5.4 5.4 9.5 9.5 9.5 13.5
Size NG 56 63 80 90 107 125
Displacement, geometric, per revolution
Vg cm3 56.1 63 80.4 90 106.7 125
Speed maximum1) nnom rpm 5000 See table below2)
Input flow at Vg and nnom qV max l/min 280 315 360 405 427 500
Torque at Vg and Dp = 300 bar T Nm 268 301 384 430 509 597
Rotary stiffness of drive shaft c Nm/rad 5940 6250 8730 9140 11200 11900
Moment of inertia for rotary group JGR kgm2 0.0042 0.0042 0.0072 0.0072 0.0116 0.0116
Maximum angular acceleration a rad/s2 7500 7500 6000 6000 4500 4500
Case volume V L 0.45 0.45 0.55 0.55 0.8 0.8
Mass (approx.) m kg 18 18 23 23 32 32
Speed, maximum1)
Size 63 80 90 107 125Return pressure [bar]
4 49002) 38002) 34002) 29002) 24002)
6 5000 4500 42002) 35002) 30002)
8 5000 4500 4500 4000 35002)
10 5000 4500 4500 4000 39002)
12 5000 4500 4500 4000 4000
The values are valid: 1)
- for the optimum viscosity range from νopt = 16 to 36 mm2/s - for mineral-based operating materials with a specific mass of 0.88 kg/l.Reduced speed through restricted flow via check valve2)
NoteOperation above the maximum values or below the minimum values may result in a loss of function, a reduced service life or in the 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 RE 90261.
Determining the size
Input flow qv =Vg • n
[L/min]1000 • ηv
Speed n =qV • 1000 • ηv
[rpm]Vg
Torque T = Vg • Dp • ηmh
[Nm]20 • π
Power P =2 π • T • n
=qv • Dp • ηt
[kW]60000 600
Vg = Displacement per revolution in cm3
Dp = Differential pressure in bar
n = Speed in rpm
ηv = Volumetric efficiency
ηmh = Mechanical-hydraulic efficiency
ηt = Total efficiency (ηt = ηv • ηmh)
6/16 Bosch Rexroth AG A2FNM Series 61 RE 91007/02.11
Technical dataPermissible radial and axial forces of the drive shaftSize NG 10, 12, 16 10, 12, 16 23, 28, 32 23, 28, 32 45 45
Drive shaft Code A B A B Z P
mm W25 ø25 W30 ø30 W30 ø30
Maximum radial force1)
at distance a (from shaft collar) a
Fq Fq max N 3667 3259 6112 5432 7964 7639
a mm 16 16 16 16 18 18
Permissible nominal pressure at Vg max
pnom perm. bar 450 400 450 400 417 400
Maximum axial force2)
–+Fax+Fax max N 320 320 500 500 630 630
—Fax max N 0 0 0 0 0 0
Permissible axial force per bar operating pressure
±Fax perm/bar N/bar 3.0 3.0 5.2 5.2 7.0 7.0
Size NG 56, 63 56, 63 80, 90 80, 90 107, 125 107, 125
Drive shaft Code A B A B A B
mm W35 ø35 W40 ø40 W45 ø45
Maximum radial force1)
at distance a (from shaft collar) a
Fq Fq max N 10313 9167 12892 11459 15915 14147
a mm 18 18 20 20 20 20
Permissible nominal pressure at Vg max
pnom perm. bar 450 400 450 400 450 400
Maximum axial force2)
–+Fax+Fax max N 800 800 1000 1000 1250 1250
—Fax max N 0 0 0 0 0 0
Permissible axial force per bar operating pressure
±Fax perm/bar N/bar 8.7 8.7 10.6 10.6 12.9 12.9
With intermittent operation1)
Maximum permissible axial force during standstill or when the axial piston unit is operating in non-pressurized condition.2)
NoteInfluence of the direction of the permissible axial force:
+ Fax max = Increase in service life of bearings
– Fax max = Reduction in service life of bearings (avoid)
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:
Gear drive V-belt drive
"Counter-clockwise" direction of rotation
Pressure at port B
Direction of rotation
alternating
"Clockwise" direction of rotation
Pressure at port A
"Counter-clockwise" direction of rotation
Pressure at port B
A B
φ opt = 70° φopt = 70°
A B
φopt = 45° φopt = 45°
A2FNM Series 61 RE 91007/02.11 Bosch Rexroth AG 7/16
The motor with the defined direction of rotation is supplied via the inlet port (A or B). As soon as the inlet is cut off and the driven component (e.g. fan wheel) runs from its own flywheel mass, the motor works as a pump. Since the turning motor is now no longer supplied via the inlet, it gets the hydraulic fluid it needs from the return line via the check valve.
Schematic
Return (A or B)
Inlet (B or A)
T1
T2
Direction of flowDirection of rotation, viewed on drive shaft Clockwise Counterclockwise
A to B B to A
Version with flushing notch When too much heat is developed in the motor (dependent on pressure and speed), more heat can be dissipated by flushing the motor housing.
Flushing is done by diverting a flow of hydraulic fluid from the return line into the motor housing through a fixed notch. The flushing flow depends on the size of the notch and the pres-sure in the return line.
The flushing flow mixes with the case drain flow and is then fed through the drain port together with this.
The size of the drain port, the flow to be fed off and its viscosity determine the case pressure. This must not exceed the mean continuous case pressure of 3 bar absolute at operating temperature.
Schematic
Return (A or B)
Inlet (B or A)
T1
T2
Flushing notch
Port plate with integrated check valve
Maximum flow quantity [l/min] with standard flushing notch
Size 10, 12, 16 23, 28, 32 45 56, 63 80, 90 107, 125Return pressure [bar] at 10 mm2/s
4
On request
6
8
10
12
8/16 Bosch Rexroth AG A2FNM Series 61 RE 91007/02.11
Dimensions size 10, 12, 16Port plate 16Threaded ports, bottom
97145
104B, A
95
T1
T2
�9
95
95
45°�45°�
�100
12
6018
20
�85
54
29
�80
-0.0
22
40°�
6
95
86
111.
5
46.5
46
A
B
A
B
Y
View Ycounter-clockwise rotation
View Yclockwise rotation
Drive shaftsA Splined shaft
DIN 5480W25x1.25x18x9g
B Parallel keyed shaft DIN 6885, AS8x7x32
28
22
M10
x 1
.51)
2)
ø28
7.5
22
+0.
015
M10
x 1
.51)
2)
ø25
+0.
002
28
40
7.5
22
ø28
PortsDesignation Port for Standard5) Size2) Maximum
pressure [bar]3)State
A, B Service line DIN 3852 M22 x 1.5; 14 deep 350 O
T1 Drain line DIN 3852 M12 x 1.5; 12 deep 3 X4)
T2 Drain line DIN 3852 M12 x 1.5; 12 deep 3 O4)
Center bore according to DIN 332 (thread according to DIN 13)1)
Observe the general instructions on page 16 for the maximum tightening torques.2)
Momentary pressure spikes may occur depending on the application. Keep this in mind when selecting measuring devices and 3)
fittings.Depending on installation position, T4) 1 or T2 must be connected (see also page 15).The spot face can be deeper than specified in the appropriate standard.5)
O = Must be connected (plugged on delivered)X = Plugged (in normal operation)
Before finalizing your design, request a binding installation drawing. Dimensions in mm.
A2FNM Series 61 RE 91007/02.11 Bosch Rexroth AG 9/16
Port plate 49SAE flange ports, side and rear
Y
�11 11
8
118
45°�45°�
�125
�32
�13
1338.1
B A
120
137
17.5
BA
40°�
25
T1
56
ø1
00-0
.022
8
1825106
T24223.2
70
117�10
6
144
190
166
88View Y counter-clockwise rotation
View Y clockwise rotation
Drive shaftsA Splined shaft
DIN 5480 W30x2x14x9g
B Parallel keyed shaft DIN 6885, AS8x7x40
M10
x 1
.51)
2)
3527
ø35
7.522
+0.
015
M10
x 1
.51)
2)
ø30
+0.
002
33
50
7.522
ø35
PortsDesignation Port for Standard Size2) Maximum
pressure [bar]3)State
A, B Service line (standard pressure series) SAE J5184) 1/2 in 350 O
Fastening thread A/B DIN 13 M8 x 1.25; 15 deep O
T1 Drain line DIN 38526) M16 x 1.5; 12 deep 3 X5)
T2 Drain line DIN 38526) M16 x 1.5; 12 deep 3 O5)
Center bore according to DIN 332 (threads according to DIN 13)1)
Observe the general instructions on page 16 for the maximum tightening torques.2)
Momentary pressure spikes may occur depending on the application. Keep this in mind when selecting measuring 3) devices and fittings.Only dimensions according to SAE J518. A metric fastening thread is a deviation from standard.4)
Depending on installation position, T5) 1 or T2 must be connected (see also page 15).The spot face can be deeper than specified in the appropriate standard.6)
O = Must be connected (plugged on delivered) X = Plugged (in normal operation)
Dimensions size 23, 28, 32 Before finalizing your design, request a binding installation drawing. Dimensions in mm.
10/16 Bosch Rexroth AG A2FNM Series 61 RE 91007/02.11
Dimensions size 45Port plate 16Threaded ports, bottom
174199
109
118
137
7132
20
A
B
Y
�13.
5
150
150
45°�45°�
�16040
°�
63
30 42
ø125
-0.0
2532 20
108
28
12
T2
T1
�118
View Y counter-clockwise rotation
Drive shafts Z Splined shaft
DIN 5480 W30x2x14x9g
P Parallel keyed shaft DIN 6885, AS8x7x50
M12
x 1
.751)
2)
3527
ø35
9.528
+0.
015
M12
x 1
.751
) 2)
ø30
+0.
002
33
60
9.528
ø35
PortsDesignation Port for Standard5) Size2) Maximum
pressure [bar]3)State
A, B Service line DIN 3852 M26 x 1.5; 20 deep 350 O
T1 Drain line DIN 3852 M18 x 1.5; 12 deep 3 X4)
T2 Drain line DIN 3852 M18 x 1.5; 12 deep 3 O4)
Center bore according to DIN 332 (threads according to DIN 13)1)
Observe the general instructions on page 16 for the maximum tightening torques.2)
Momentary pressure spikes may occur depending on the application. Keep this in mind when selecting measuring 3) devices and fittings.Depending on installation position, T4) 1 or T2 must be connected (see also page 15).The spot face can be deeper than specified in the appropriate standard.5)
O = Must be connected (plugged on delivered) X = Plugged (in normal operation)
Before finalizing your design, request a binding installation drawing. Dimensions in mm.
A2FNM Series 61 RE 91007/02.11 Bosch Rexroth AG 11/16
Dimensions size 56, 63Port plate 48Threaded ports, side and rear
228
Y
11087
129
171198
AB
147
40
25
B A
682
T1
T2
150
�160
�ø13
.5 150
45°�45°�
40°�
31
30 50
7020
117
1032
ø125
-0.0
25
�128
View Y counter-clockwise rotation
View Y clockwise rotation
Drive shaftsA Splined shaft
DIN 5480 W35x2x16x9g
B Parallel keyed shaft DIN 6885, AS10x8x50
M12
x 1
.75
1) 2
)
40
32
ø40
9.5
28
+0.
018
M12
x 1
.75
1) 2
)
ø35
+0.
002
38
60
9.528
ø40
PortsDesignation Port for Standard5) Size2) Maximum
pressure [bar]3)State
A, B Service line DIN 3852 M33 x 2; 20 deep 350 O
T1 Drain line DIN 3852 M18 x 1.5; 12 deep 3 X4)
T2 Drain line DIN 3852 M18 x 1.5; 12 deep 3 O4)
Center bore according to DIN 332 (threads according to DIN 13)1)
Observe the general instructions on page 16 for the maximum tightening torques.2)
Momentary pressure spikes may occur depending on the application. Keep this in mind when selecting measuring 3) devices and fittings.Depending on installation position, T4) 1 or T2 must be connected (see also page 15).The spot face can be deeper than specified in the appropriate standard. 5)
O = Must be connected (plugged on delivered) X = Plugged (in normal operation)
Before finalizing your design, request a binding installation drawing. Dimensions in mm.
12/16 Bosch Rexroth AG A2FNM Series 61 RE 91007/02.11
Dimensions size 80, 90Port plate 34SAE flange ports, bottom
40°�
138
148
221247
�ø25
52.4
4530
26.2
B
A
Y 89.5
158.
5
�180
45°�45°�
165
165
�13.
5
29 64
83
41
20132
3210
ø140
-0.0
25
T1
T2
�138
View Y counter-clockwise rotation
Drive shaftsA Splined shaft,
DIN 5480 W40x2x18x9g
B Parallel keyed shaft DIN 6885, AS12x8x56
M16
x 2
1) 2
)
45
37
ø45
1236
+0.
018
M16
x 2
1) 2
)
ø40
+0.
002
43
70
1236
ø45
PortsDesignation Port for Standard Size2) Maximum
pressure [bar]3)State
A, B Service line (standard pressure series) SAE J5184) 1 in 350 O
Fastening thread A/B DIN 13 M10 x 1.5; 17 deep O
T1 Drain line DIN 38526) M18 x 1.5; 12 deep 3 X5)
T2 Drain line DIN 38526) M18 x 1.5; 12 deep 3 O5)
Center bore according to DIN 332 (threads according to DIN 13)1)
Observe the general instructions on page 16 for the maximum tightening torques.2)
Momentary pressure spikes may occur depending on the application. Keep this in mind when selecting measuring devices and 3)
fittings.Only dimensions according to SAE J518. A metric fastening thread is a deviation from standard.4)
Depending on installation position, T5) 1 or T2 must be connected (see also page 15).The spot face can be deeper than specified in the appropriate standard.6)
O = Must be connected (plugged on delivered) X = Plugged (in normal operation)
Before finalizing your design, request a binding installation drawing. Dimensions in mm.
A2FNM Series 61 RE 91007/02.11 Bosch Rexroth AG 13/16
Dimensions size 107, 125Port plate 34SAE flange ports, bottom
268
26.2
52.4
75
ø25
174
A
B
Y
157149
243
A
B
�200
�17.
5
45°�45°�
190
190
85
40°�
36.5
23140
4010
65
ø160
-0.0
25
T2
T1
40
�150
View Y counter-clockwise rotation
View Y clockwise rotation
Drive shaftsA Splined shaft
DIN 5480 W45x2x21x9g
B Parallel keyed shaft DIN 6885, AS14x9x6
M16
x 2
1) 2
)
50
42
ø50
1236
+0.0
18
M16
x 2 1
) 2)
ø45
+0.0
02
48.5
80
1236
ø50
PortsDesignation Port for Standard Size2) Maximum
pressure [bar]3)State
A, B Service line (standard pressure series) SAE J5184) 1 in 350 O
Fastening thread A/B DIN 13 M10 x 1.5; 17 deep O
T1 Drain line DIN 38526) M18 x 1.5; 12 deep 3 X5)
T2 Drain line DIN 38526) M18 x 1.5; 12 deep 3 O5)
Center bore according to DIN 332 (threads according to DIN 13)1)
Observe the general instructions on page 16 for the maximum tightening torques.2)
Momentary pressure spikes may occur depending on the application. Keep this in mind when selecting measuring 3) devices and fittings.Only dimensions according to SAE J518. A metric fastening thread is a deviation from standard.4)
Depending on installation position, T5) 1 or T2 must be connected (see also page 15).The spot face can be deeper than specified in the appropriate standard. 6)
O = Must be connected (plugged on delivered) X = Plugged (in normal operation)
Before finalizing your design, request a binding installation drawing. Dimensions in mm.
14/16 Bosch Rexroth AG A2FNM Series 61 RE 91007/02.11
General
During commissioning and operation, the axial piston unit must be filled with hydraulic fluid and air bled. This must also 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 motor housing must be directed to the reservoir via the highest available drain port (T1, T2).
To achieve favorable noise values, decouple all connecting lines using elastic elements and avoid above-reservoir installa-tion.
In all operating conditions, the drain line must flow into the reservoir below the minimum fluid level.
Installation position
See the following examples 1 to 8. Further installation positions are available upon request.
Recommended installation position: 1 and 2.
InstructionsIn installation position "shaft upwards", an air bleed port R is necessary (please state in plain language when ordering - special version).
Below-reservoir installation (standard)
Below-reservoir installation is when the axial piston unit is installed outside of the reservoir below the minimum fluid level.
1 2ht min
hmin
T1
T2
ht min
hmin
T2
T1
3 4
T1
T2
ht min
hmin
R
ht min
hmin
T1
T2
Installation position Air bleed Filling
1 – T1
2 – T2
3 – T1
4 R T2
Above-reservoir installation
Above-reservoir installation is when 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 motor housing.
5 6
T1
T2
L1
ht min
hmin
T2
T1
L1
ht min
hmin
7 8
L1T1
T2
ht min
hmin
RL1
0.
5 ba
r
T1
T2
ht min
hmin
Installation position Air bleed Filling
5 – T1 (L1)
6 – T2 (L1)
7 – T1 (L1)
8 R (L1) T2 (L1)
L1 Filling / air bleed
R Air bleed port (special version)
T1, T2 Drain port
ht min Minimum required immersion depth (200 mm)
hmin Minimum required spacing to reservoir base (100 mm)
Installation instructions
A2FNM Series 61 RE 91007/02.11 Bosch Rexroth AG 15/16
General instructions
A2FM RE 91001/09.07
The motor A2FNM is designed to be used in open circuit. –
The project planning, installation and commissioning of the axial piston unit – requires the involvement of qualified personnel.
Before using the axial piston unit, please read the corresponding instruction manual completely and thoroughly. If necessary, –these can be requested from Rexroth.
During and shortly after operation, there is a risk of burns on the axial piston unit. Take appropriate safety measures (e.g. by –wearing protective clothing).
Depending on the operating conditions of the axial piston unit (operating pressure, fluid temperature), the characteristic may –shift.
Service line ports: –
The ports and fastening threads are designed for the specified maximum pressure. 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 service line ports and function ports are only designed to accommodate hydraulic lines. -
The data and notes contained herein must be adhered to. –
The product is not approved as a component for the safety concept of a general machine according to DIN EN ISO 13849. –
The following tightening torques apply: –
Fittings: -Observe the manufacturer's instructions regarding the tightening torques of the fittings used.
Mounting bolts: -For mounting bolts with metric ISO thread according to DIN 13, we recommend checking the tightening torque in individual cases in accordance with VDI 2230.
Female threads in the axial piston unit: -The maximum permissible tightening torques MG max are maximum values of the female threads and must not be exceeded. For values, see the following table.
Threaded plugs: -For the metallic threaded plugs supplied with the axial piston unit, the required tightening torques of threaded plugs MV apply. For values, see the following table.
Ports Maximum permissible tightening torque of the female threads MG max
Required tightening torque of the threaded plugs MV
WAF size hexagon socket of the threaded plugsStandard Size of thread
DIN 3852 M12 x 1.5 50 Nm 25 Nm 6 mm
M14 x 1.5 80 Nm 35 Nm 6 mm
M16 x 1.5 100 Nm 50 Nm 8 mm
M18 x 1.5 140 Nm 60 Nm 8 mm
M26 x 1.5 230 Nm 120 Nm 12 mm
M33 x 2 540 Nm 225 Nm 17 mm
16/16 Bosch Rexroth AG A2FNM Series 61 RE 91007/02.11
© This document, as well as the data, specifications and other information set forth in it, are the exclusive property of Bosch Rexroth AG. It may not be repro-duced or given to third parties without its consent.
The data specified above only serve to describe the product. No statements concerning a certain condition or suitability for a certain application can be derived from our information. The information given does not release the user from the obligation of own judgment and verification. It must be remembered that our products are subject to a natural process of wear and aging.
Subject to change.
Bosch Rexroth AG HydraulicsAxial Piston UnitsGlockeraustraße 289275 Elchingen, GermanyPhone +49 73 08 82-0Fax +49 73 08 72 [email protected]/axial-piston-motors