PM10
VARIABLE DISPLACEMENT PUMP
CLOSED LOOP CIRCUIT
T E C H N I C A L C A T A L O G
2 15/11/2017
PM10 - Variable displacement pump POCLAIN HYDRAULICS
OVERVIEW
PM10 is a variable displacement, axial piston pump, with swashplate system, for closed loop hydrostatic transmissions.
It provides a continuously variable flow rate between zero and maximum in forward and reverse direction. Flow rate is proportional to rotation
speed and swashplate angle.
It can feature a charge pump to keep the circuit pressurised. This avoids risk of cavitations and ensures a good performance of the transmission.
It offers several types of control: direct mechanical, servo hydraulic, servo mechanical, electrical, proportional electrical and automotive.
It is equipped with high pressure relief valves and can be delivered with auxiliary gear pumps.
It is available in single or tandem versions.
As options, PM10 can be featured with flushing valve, pressure cut-off, filter on charge pressure line and safety devices to ensure safe operation
of the machine.
PM10-07 PM10-09 PM10-11 PM10-13 PM10-14 PM10-16 PM10-18 PM10-21
Displacement
cm³/rev
[in³/rev.]
7,08
[0.43]
9,08
[0.55]
11,83
[0.72]
13,89
[0.85]
14,32
[0.87]
16,80
[1.03]
17,85
[1.09]
20,40
[1.24]
Theoretical Flow
at rated speed
L/min
[GPM]
25,5
[6.74]
32,7
[8.64]
42,6
[11.25]
50,0
[13.21]
51,6
[13.63]
59
[15.59]
64,3
[16.99]
73
[19.28]
Rated speed rpm 3 600
Rated pressure bar [PSI] 210 [3 045]
Max. pressure bar [PSI] 350 [5 076] 300 [4 351]
Mounting flange SAE A, SAE B
Controls
Direct mechanical, servo hydraulic with or without feedback, servo mechanical, electrical, electrico-proportional
with or without feedback, automotive
Mass kg [lb] from 16,3 [35.9] to 18,8 [41.4]
Rotation
Clockwise or Counterclockwise
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 3
CONTENT
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
MODEL CODE 4
TECHNICAL SPECIFICATIONS 6
Features 6
Main dimensions 7
Port characteristics 7
OPERATING PARAMETERS 9
Operating parameters 9
Charge pressure 9
Case pressure 9
Pressure ratings 9
Speed ratings 9
Inlet pressure 10
Theoretical output 10
Poclain Hydraulics recommandations for fluid 10
Fluid and filtration 11
Viscosity range 11
SYSTEM DESIGN PARAMETERS 12
Sizing equations 12
Redundant braking system requirement 12
Loop flushing 12
Reservoir 13
Case drain usage for tandem pump 13
Differential pressure 13
Bearing life and external shaft loading 14
Hydraulic unit life 15
Mounting flange loads 15
FEATURES 16
High pressure relief valve 16
Charge relief valve 17
Charge pump 18
Displacement limiters 19
By-pass 19
Mounting flange and shafts 20
Auxiliary mounting pad 23
Tandem pumps 26
Gear pumps 28
CONTROLS 30
Direct mechanical controls 30
Mechanical servo control with feed back 32
Hydraulic servo control 34
Hydraulic servo control with feedback 36
Electrical on-off servo control 38
Electrico-proportional servo control 40
Electro-proportional control with feedback 42
Hydraulic automotive control 44
OPTIONS 47
Roller bearing 47
Fluorinated elastomer seals 47
UNF threads ports 47
Filter on pressure line 48
Neutral position switch 49
External connections for filter 50
Safety valve 50
Flushing valve 52
Mechanical inching 52
Hydraulic inching 53
Finishing coat 53
Special version 54
Pressure cut-off valve 54
Customized identification plate 54
Anti-stall valve 55
PM10 - Variable displacement pump POCLAIN HYDRAULICS
4 15/11/2017
MODEL
1 0
12
4
Control
Direct mechanical control
Upside without lever
MA0
Upside with lever to the left
MAL
Upside with lever to the right
MAR
Downside without lever
MB0
Downside with lever on the left
MBL
Downside with lever on the right
MBR
Direct mechanical control
with return spring
Upside without lever
NA0
Upside with lever to the left
NAL
Upside with lever to the right
NAR
Downside without lever
NB0
Downside with lever on the left
NBL
Downside with lever on the right
NBR
Mechanical servo control with feed back
A
Hydraulic servo control
S
Hydraulic servo control with feed back
T
Electrical on-off servo control with return spring without electrovalve
B00
Electrical on-off servo control with return spring and electrovalve 12V
B12
Electrical on-off servo control with return spring and electrovalve 24V
B24
Electrical on-off servo control without electrovalve
C00
Electrical on-off servo control with electrovalve 12V
C12
Electrical on-off servo control with electrovalve 24V
C24
Electro-proportional servo control 12V
P12
Electro-proportional servo control 24V
P24
Electro-proportional servo control with feedback 12V
Q12
Electro-proportional servo control with feedback 24V
Q24
Hydraulic automotive control 12 V
D12
Hydraulic automotive control 24V
D24
1
Mounting flange
SAE A
A
SAE B
B
5
K restrictor mm [in]
Without restrictor
00
Ø 0,5 [dia. 0.019]
05
Ø 0,6 [dia. 0.023]
06
Ø 0,7 [dia. 0.027]
07
Ø 0,8 [dia. 0.031]
08
Ø 1,0 [dia. 0.039]
10
Spring for control N mm [in]
Ø 2,8 [dia. 0.110]
28
Ø 3,0 [dia. 0.118]
30
2
Displacement cm
3
/rev [in
3
/rev]
7,08 [0.43]
07
9,08 [0.55]
09
11,83 [0.72]
11
13,89 [0.85]
13
14,32 [0.87]
14
16,80 [1.03]
16
17,85 [1.09]
18
20,40 [1.24]
21
345
PM
6
3
Mounting flange and shaft
SAE A
Splined shaft (z = 9; 16/32 D.P.)
S1
Splined shaft (z = 11; 16/32 D.P.)
S2
Ø=19 with feather key
C2
SAE B
Splined shaft (z = 11; 16/32 D.P.)
S2
Splined shaft (z = 13; 16/32 D.P.)
S3
Ø =19 with feather key
C2
6
High pressure relief valve setting
Max. system pressure (bar [PSI])
Without valve (only check valve)
00
100 [1 450]
10
150 [2 175]
15
200 [2 900]
20
250 [3 625]
25
300 [4 351]
30
350 [5 076] (Only after technical approval)
35
MODEL CODE
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 5
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
CODE
8
Charge relief valve setting bar [PSI]
Without charge relief valve
00
Setting 10 [145] (standard for M and N controls)
10
Setting 20 [290] (standard for servo control)
20
11
12
107 89
7
Rotation
Clockwise
R
Counter clockwise
L
9
Charge pump displacement cm
3
/rev [in
3
/rev]
Without charge pump
00
4,9 [0.30] (For auxiliary mounting pad F and G)
05
7,0 [0.43] (Only for auxiliary mounting pad A)
07
9,0 [0.55] (For tandem pump with auxiliary
mounting pad A and single pump)
08
10
Auxiliary mounting pad
Without auxiliary mounting pad
S
SAE A flange
A
German group 1 flange
F
German group 2 flange
G
11
Gear pump cm
3
/rev [cu.in/rev]
Without gear pump
00
German group 1 flange
(If digit 10 = F)
1,6 [0.10]
01
2,0 [0.12]
02
3,2 [0.19]
03
4,2 [0.26]
04
5,0 [0.30]
05
6,3 [0.38]
06
SAE A or German group 2 flange
(If digit 10 = A or G)
4,5 [0.27]
04
6,0 [0.37]
06
8,5 [0.52]
08
11,0 [0.67]
11
14,5 [0.88]
14
17,0 [1.04]
17
SAE A flange (If digit 10 = A) 19,5 [1.19]
20
12
Options
Without option
00
Roller bearing
CR
Fluorinated elastomer seals
EV
UNF Threads
FU
Filter on pressure line without clogging indicator
F0
Filter on pressure line with clogging indicator
F2
External connections for filter
F3
Mechanical inching for control D
IC
Hydraulic inching for control D
HI
Neutral position switch (Only with control A)
MI
Safety valve (For controls A and S)
VPU
Flushing valve
VS
Finishing coat
PA
Customized identification plate
DP
Antistall valve
SD
Pressure cut-off valve
LP
Special version
ES
A screw by-pass is present at the base of all PM10
pumps.
In case of specific control request (constant
flow, antistall effect, ...) that require dedicated
valve plate timing, please contact your Poclain
Hydraulics application engineer for further
information.
In case of request for a combination of several
options, please contact your Poclain Hydraulics
application engineer for further information.
PM10 - Variable displacement pump POCLAIN HYDRAULICS
6 15/11/2017
TECHNICAL SPECIFICATIONS
Features
PM10-07 PM10-09 PM10-11 PM10-13 PM10-14 PM10-16 PM10-18 PM10-21
Displacement
cm³/rev
[in³/rev.]
7,08
[0.43]
9,08
[0.55]
11,83
[0.72]
13,89
[0.85]
14,32
[0.87]
16,80
[1.03]
17,85
[1.09]
20,40
[1.24]
Theoretical flow at rated
speed (3600 rpm)
L/min
[GPM]
25,5
[6.74]
32,7
[8.64]
42,6
[11.25]
50
[13.21]
51,6
[13.63]
59
[15.59]
64,3
[16.99]
73
[19.28]
Max. Theoretical absorbed
power
KW 14,9 19,1 24,8 29,3 30,1 34,2 35,3 42,6
Theorical absorbed torque
at 100 bar [1 450 PSI]
N.m
[in.lbf]
11,3
[100]
14,5
[128]
18,8
[166]
22,2
[196]
22,8
[202]
26,0
[230]
28,4
[251]
32,3
[286]
Moment of inertia
kg.m²
[slug.ft²]
0,0014
[0.0010]
Internal charge pump
cm
3
/rev
[in
3
/rev]
4,9 [0.30]; 7,0 [0.43] or 9,0 [0.55]
Charge relief valve setting
bar
[PSI]
From 6 [87] to 30 [435]*
High pressure relief setting bar
[PSI]
Max. 350 [5 076]
Max.
300 [4
351]
Mounting flange SAE A, SAE B
Mass kg [lb]
16,3 [35.9] with control M, N, S
18,8 [41.4] with controls A, B, C, D, P, Q, T
Noise level dBA < 75
* 30 bar [435 PSI] only at maximum revolutions.
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 7
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
Main dimensions
PM10 with hydraulic servo control and without auxiliary mounting pad.
Port characteristics
75,5 [2.97]
28 [2.97]
95 [3.74]
80 [3.15]
124 [4.88]
119 [4.69]
102
[4.02]
173
[6.81]
75,5 [2.97]
120 [4.72]
135,5 [5.33]
45
[1.77]
26 [1.02]
6,5
[4.88]
76 [2.99]
144 [5.67]
27
[1.06]
187,7 [7.39]
116,7
[4.59]
71 [2.80]
25.5 [1]
25.5 [1]
D
A
B
C
E
See from page 30 to page 41
for control dimensions.
1 0
12
S
345
PM
6
11
12
S
107 89
SAE A SAE B
A
Ø 82,55
[dia. 3.25 --------]
Ø 101,6
[dia. 4.00------]
B 106 [4.17] 146 [5.75]
C130 [5.12] 174 [6.85]
DØ 11,6 [dia. 0.46] Ø 14,3 [dia. 0.56]
E6,4 [0.25] 9,7 [0.38]
0
-0,054
0
-0.002
0
-0,05
0
-0.002
Counter
clockwise (L)
Clockwise (R)
T1
M2
G1
M1
M3
M4
A
B
S
T2
G
Port
Function
ISO 1179-1
(standard)
ISO 11926-1
(option FU)
A-B
Services 1/2’’ GAS 3/4-16 UNF-2B
G
Auxiliary 1/4’’ GAS 7/16-20 UNF-2B
M1/M2
Gauge 1/4’’ GAS 7/16-20 UNF-2B
M3/M4
Servo control pilot 1/8’’ GAS 7/16-20 UNF-2B
S
Suction 3/4’’ GAS 1-1/16-12 UNF-2B
T1
Drain 1/2’’ GAS 7/8-14 UNF 2B
T2
Drain 1/2’’ GAS 7/8-14 UNF-2B
G1
Auxiliary 1/4’’ GAS 1/4” GAS
PM10 - Variable displacement pump POCLAIN HYDRAULICS
8 15/11/2017
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 9
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
OPERATING PARAMETERS
Operating parameters
PM10-07 PM10-09 PM10-11 PM10-13 PM10-14 PM10-16 PM10-18 PM10-21
Speed
ratings
Minimum
rpm
700
Max. without load 3 900
Max. with load 3 600
System
pressure
Rated
bar [PSI]
210 [3 045]
Maximum
350 [5 076] 300 [4 351]
Minimum low loop
6 [87]
Inlet
pressure
Mini continuous
bar abs.
[PSI abs.]
0,8 [11.6]
Mini (cold start)
0,5 [7.2]
Case
pressure
Continuous
bar [PSI]
1,5 [21.7]
Maximum (cold
start)
2,5 [36.2]
Charge
pressure
Standard for M / N
controls
bar [PSI]
10 [145]
Standard version
20 [290]
Max. charge
pressure
30 [435] (only at maximum revolutions)
Servo
case
pressure
Maximum bar [PSI] 30 [435]
Charge pressure
A charge flow is required to maintain a positive pressure in the low pressure loop of a closed loop hydrostatic transmission. Charge
pressure ensures proper lubrication and rotating group operation. It is recommended to maintain the charge pressure at a minimum of
6 bar [87 psi] above case pressure. For more details, refer to charge pump paragraph, page 18.
Case pressure
Case pressure must be maintained within the limits shown in the table ''Operating parameters''. Ensure housing is always filled with
hydraulic fluid and especially during start-up of the machine.
Pressure ratings
Maximum peak pressure
It is the maximum allowable pressure. It is equivalent to the maximum setting of the maximum high pressure relief valve. A self-propelled
machine can reach the maximum peak pressure value no more than 1-2% of that work cycle.
Work cycle
A fundamental factor for ensuring correct hydrostatic transmission sizing is the machine work cycle (pressure-time ratio, seasonality,
pressure vs. percentage of time at max. displacement, machine type). Part service life depends on the correct choice in relation to the
work cycle.
Overloads
It is mandatory to protect parts against any possible overloads.
Speed ratings
The table ''Operating parameters'' gives minimum and maximum rated speeds. Note that all displacements might operate under different
speed limits. Definitions of these speed limits appear below.
Maximum speed is the highest operating speed allowed. Over speeding reduces pump life time, can lead to loss of hydrostatic power and
braking capacity. Never exceed the maximum speed limit under any operating conditions.
Nominal speed is the speed offering the maximal efficiency.
PM10 - Variable displacement pump POCLAIN HYDRAULICS
10 15/11/2017
Inlet pressure
Charge pump inlet pressure is key for acceptable pump life and performances. A continuous inlet pressure of not less than 0,8 bar abs. [11.6
PSI abs.] is recommended. An continuous inlet pressure less than 0.5 bar abs. [7.2 PSI abs.] indicates inadequate inlet design or a restricted
filter. Pressures less than 0.5 bar abs. [7.2 PSI abs.] can happen at cold start, but should increase with oil temperature.
Theoretical output
Theoretical output flow is a function of pump displacement and speed. It is relevant to size the rest of the circuit. Theoretical flow does not take
into account losses due to leakage or variations in displacement. Refer to performances, page 6, for volumetric and overall efficiencies at
various operating speeds and pressures.
Poclain Hydraulics recommandations for fluid
Poclain hydraulics recommends the use of hydraulic fluids defined by the ISO 15380 and ISO 6743-4 standards.
For temperate climates, the following types are recommended.
• HM 46 or HM 68 for fixed installations.
• HV 46 or HV 68 for mobile installations.
• HEES 46 for mobile installations.
These specifications correspond to category 91H of the CETOP standard, parts 1, 2 and 3 of the DIN 51524 standard,
and grades VG32, VG 46 and VG68 of the ISO 6743-4 standards.
T
It is also possible to use ATF, HD, HFB, HFC or HFD type hydraulic fluid upon Poclain Hydraulics specific approval of the
components’ operating conditions.
Standardized designations for the fluids
• HM : Mineral fluids having specific antioxidant, anticorrosion and antiwear properties (HLP equivalent to DIN 51524
parts 1 and 2).
• HV : HM mineral fluids providing improved temperature and viscosity properties (DIN 51524 part 3).
• HEES :Biodegradable fluids based on organic esters.
It is also possible to use a fluid that meets the biodegradability criteria and is compatible in the event of
accidental food contact. The BIOHYDRAN FG 46 fluid designed by the company Total has undergone testing of
its properties and performance on our test benches. Since this type of fluid has not yet been categorized, it is the
responsibility of machine manufacturers to validate its compatibility with all of the components used in order to
guarantee that the intended functions will be fulfilled and this for the desired life time of all equipment items.
During operation, the temperature of the oil must be between 0°C [32°F] and 80°C [176°F]; the minimum and
maximum temperatures may be exceeded momentarily by ± 20°C [± 68°F] for a duration of less than 30 minutes.
For all applications outside these limits, please consult with your Poclain Hydraulics’ application engineer.
Pump storage
If the pump stays on stock for more than 6 months, a status verification must be performed before you install it on a
machine. Pay attention to sealing condition, rust presence and free rotation of shaft.
For biodegradable fluids, consult your Poclain Hydraulics’ application engineer
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 11
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
Fluid and filtration
The contaminating particles suspended in the hydraulic fluid cause the hydraulic mechanisms moving part wear. On hydraulic pumps,
these parts operate with very small dimensional tolerances. In order to reach the part life, it is recommended to use a filter that maintains
the hydraulic fluid contamination class at a max. of:
9 according to NAS 1638
22/18/13 according to ISO 4406:1999
According to the type of application decided for the pump, it is necessary to use filtration elements with a filtration ratio of:
ȕ 20 to 30 100
Making sure that this ratio does not worsen together with the increasing of the filter cartridge differential pressure.
If these values cannot be observed, the component life will consequently be reduced and it is recommended to contact the Poclain
Hydraulics Customer Service.
Filters on charge circuit
Filters on the charge circuit (F0-F2) are designed without by-pass. The max. pressure drop on the filtration part must not exceed 2 bar [29
PSI] (3 bar [43.5 PSI] in case of cold starting) at pump full rating. To monitor the pressure drop, It is recommended to use the clogging
indicator on the filtration element (F2 option). Contact your Poclain Hydraulics Application engineer, each time the pump is not charged by
its internal charge pump.
Filters on charge circuit are mounted on the pump special support.
Filters assembling
The suction filter is mounted on the suction line. Check that the pressure before the charge pump is 0.8 bar abs. [11.6 PSI abs.], measured
on the pump suction port (0.5 bar [7.2 PSI] for cold starting).
Viscosity range
For both max. efficiency and life of the unit, the operative viscosity should be chosen within the optimum range of:
¥opt = optimum operating viscosity from 16 to 36 mm
2
/s [from 74.1 to 166.8 SUS] referred to the closed loop temperature.
Working conditions: the following limits of viscosity apply
¥min = 5 mm
2
/s [23 SUS] short-duration at a max. permissible leakage oil temperature of 90° C [194°F]
¥max = 1000 mm
2
/s [4 634 SUS] short-duration, on cold start.
Hydraulic fluid temperature range
For brief instants during the cold starting
Optimum
viscosity
For brief instants with leakage oil at 90°C
Ensure fluid temperature and viscosity limits
are concurrently satisfied.
PM10 - Variable displacement pump POCLAIN HYDRAULICS
12 15/11/2017
SYSTEM DESIGN PARAMETERS
Consult your Poclain Hydraulics application engineer to validate your
design parameters before using the pump in your application.
Sizing equations
The following equations are helpful when sizing hydraulic pumps. Generally, the sizing process is initiated by an evaluation of the machine
system to determine the required motor speed and torque to perform the necessary work function. First, the motor is sized to transmit the
maximum required torque. The pump is then selected as a flow source to achieve the maximum motor speed.
SI units
Output flow Q =(l/min)
V
g
=Displacement per revolution cm
3
/tr [in
3
/rev]
'p = p
o
- p
i
(system pressure) bar [PSI]
n = Speed min
-1
[rpm]
K
v
= Volumetric efficiency
K
m
= Mechanical efficiency
K
t
= Overall efficiency = Kv x Km
Input torque M =(N.m)
Input power P == (kW)
US units
Output flow Q = [GPM]
Input torque M = [lbf.in]
Input power P == [hp]
Redundant braking system requirement
Loop flushing
Closed circuit may require a flushing valve to meet temperature and cleanliness requirements. A flushing valve takes a part of hot fluid flow from
the low pressure loop of the system loop for cooling and filtering. Make sure that the charge pump provides adequate flow for the flushing valve
flushing and the flushing valve does not cause charge pressure to drop below recommended limits.
V
g
.n.K
v
1000
V
g
.'
p
20.S.K
m
M. n.S
30 000
Q.'
p
600.K
t
V
g
.n.K
v
231
V
g
.'
p
2.S.K
m
M.n.S
198 000
Q.'
p
1714.K
t
Unintended vehicle or machine movement hazard.
The loss of hydrostatic drive line power, in any mode of operation (forward, neutral, or reverse)
may cause the system to lose hydrostatic braking capacity. You must provide a braking system,
redundant to the hydrostatic transmission, sufficient to stop and hold the vehicle or machine in
the event of hydrostatic drive power loss.
See option VS for
more information
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 13
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
Reservoir
The reservoir provides clean fluid, dissipates heat, and removes entrained air from the hydraulic fluid. It allows for fluid volume changes
associated with fluid expansion and cylinder differential volumes. Minimum reservoir capacity depends on the volume needed to perform these
functions. Typically, a capacity of one half the charge pump flow (per minute) is satisfactory for a closed reservoir. Open circuit systems sharing
a common reservoir require greater fluid capacity.
Locate the reservoir outlet (suction line) near the bottom, allowing clearance for settling foreign particles. Use a 100 - 125 ȝm screen covering the
outlet port.
Place the reservoir inlet (return lines) below the lowest expected fluid level, as far away from the outlet as possible.
Use a baffle (or baffles) between the reservoir inlet and outlet ports to promote de-aeration and reduce fluid surging.
Case drain usage for tandem pump
On tandem pumps, and to ensure lubrification of both pumps, excess flow from the first pump charge relief valve must be routed into the
housing of the second pump.
Differential pressure
The differential pressure is the High pressure relief valve setting minus Charge relief valve setting.
M3 M4 G M1 A1 M5 M6
T1 S T M2 B1 T T2
M7 A2
M8 B2
High pressure relief
valve setting
Charge relief valve
setting
Differential pressure
Max. system
pressure
=
PM10 - Variable displacement pump POCLAIN HYDRAULICS
14 15/11/2017
Bearing life and external shaft loading
Bearing life:
Bearing life is a function of speed, pressure, swashplate angle and external loads. Oil type and viscosity impact bearing life.
Normal bearing life in B
10
hours is shown in the table above. Figures have been calculated under the following operating conditions :
A continuous differential pressure of 120 bar [1740 PSI], 1800 rpm shaft speed, 20 bar [290 PSI] charge pressure, maximum displacement,
without any external shaft side load. The data is based on a 50% forward, 50% reverse duty cycle, and standard charge pump size.
Shaft Loads
PM10 pumps are designed with bearings that can accept external radial and thrust loads. The external radial shaft load limits depend on the
load position, orientation, and operating conditions of the unit.
The maximum permissible radial load (Re), is based on the maximum external moment (Me), and the distance (L) from the mounting
flange to the load. It may be determined using the table and formula below. Thrust (axial) load limits are also shown.
Re = Me / L
All external shaft loads affect bearing life. In applications with external shaft loads, minimize the impact by positioning the load at 90° or 270° as
shown in the figure.
Contact your Poclain Hydraulics representative for an evaluation of unit bearing life if:
• Continuously applied external loads exceed 25 % of the maximum allowable radial load Re.
• The pump swashplate is positioned on one side of center all or most of the time.
• The unit bearing life (B
10
) is critical.
Radial and thrust load position
PM10-07 PM10-09 PM10-11 PM10-13 PM10-14 PM10-16 PM10-18 PM10-21
Bearing life (B
10
hours)
76 105 36 062 16 294 9912 9 204 8053 4 743 3 178
at 120 bar [1740 PSI]
PM10-07 PM10-09 PM10-11 PM10-13 PM10-14 PM10-16 PM10-18 PM10-21
External moment (Me)
N.m [in.lbf]
63 [558] 59 [522] 52 [460] 49 [438] 46 [407] 40 [383] 38 [336] 32 [283]
End view of
shaft
Axis of swashplate
rotation
For an accurate calculation, consult your Poclain Hydraulics
application engineer and use new AXEL program.
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 15
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
Hydraulic unit life
Hydraulic unit life is the life expectancy of the hydraulic components. It depends on speed and system pressure even if , system pressure
is the dominant operating variable. High pressure, generated by high load, reduces hydraulic unit life.
Design the hydraulic system according to the expected machine duty cycle. Take in consideration the expected percentages of time at
various loads and speeds. Ask your Poclain Hydraulics representative to calculate an appropriate pressure based your hydraulic system
design. If duty cycle data is not available, input power and pump displacement are used to calculate system pressure.
All pressure limits are differential pressures (referenced to charge pressure) , taking a normal charge pressure in consideration.
PM10 pumps will meet satisfactory life expectancy if applied within the parameters specified in this technical documentation. For more
detailed information on hydraulic unit life see Operating Parameters in page 9.
Mounting flange loads
Adding tandem mounted pumps, and/or tandem auxiliary pump(s), subjecting pumps to shock loads may generate excessive loads on the
front mounting flange. The overhung load moment for multiple pump mounting can be estimated as shown in the figure below.
Overhung load example
Estimating overhung load moments
W = Weight of pump (kg)
L = Distance from mounting flange to pump center of gravity (CG)
M
R
= G
R
(W
1
L
1
+ W
2
L
2
+ ... + W
n
L
n
)
M
S
= G
S
(W
1
L
1
+ W
2
L
2
+ ... + W
n
L
n
)
Where:
M
R
= Rated load moment (N.m)
M
S
= Shock load moment (N.m)
G
R
*= Rated (vibratory) acceleration (G’s) (m/sec²)
G
S
*= Maximum shock acceleration (G’s) (m/sec²)
*Calculations will be carried out by multiplying the gravity (g = 9.81 m/sec²) with a given factor. This factor depends on the application.
Allowable overhung load moment are shown in the above table. Exceeding these values requires additional pump support.
CG
pump 2
CG
pump 1
Auxiliary pad
Mounting flange
For an accurate calculation, consult your Poclain Hydraulics
application engineer.
PM10 - Variable displacement pump POCLAIN HYDRAULICS
16 15/11/2017
FEATURES
High pressure relief valve
The High pressure relief valves maintain circuit pressure in the proper range. The check valves allow charge flow to replenish the low pressure
loop of the circuit. The high pressure relief valves ensure a high pressure protection of the high pressure loop of the circuit.
High pressure relief valves are available in a wide range of settings.
When high pressure relief valves are not desired, pumps is equipped with charge circuit check valves only. The High pressure relief valve are
not adjustable. To change setting is necessary to change the whole valve.
High pressure relief valves are intended for transient overpressure protection and are not
intended for continuous pressure control. Flow over relief valves for extended periods of time
may result in severe heat build up. High flows over relief valves may result in pressure levels
exceeding the nominal valve setting and potential damage to system components.
M3 M4 G M1
M2ST2T1
A
B
Flow
Pressure
High pressure
relief valve
ISO VG46 hydraulic fluid at 50°C [122°F]
1 0
12345
PM
6
11
12107 89
High pressure
relief valve
Available setting
bar [PSI]
Without
-
00
With
100 [1 450]
10
150 [2 175]
15
200 [2 900]
20
250 [3 625]
25
300 [4 351]
30
350 [5 076]
35
The high pressure relief valve setting is not the
differential pressure between A and B ports (see
page 13).
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 17
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
Charge relief valve
The charge pressure relief valve provides a relief outlet for charge circuit. This valve is used to set the charge pressure of the circuit. Flow
through the valve is ported to case.
The nominal charge relief setting is referenced to case pressure.
Incorrect charge pressure settings may result in the inability to build
required system pressure and/or inadequate loop flushing flows.
Ensure correct charge pressure under all conditions of operation to
maintain pump control performance.
M3 M4 G M1
M2ST2T1
A
B
Charge relief valve
Pump speed (rpm)
Pressure difference
ISO VG46 hydraulic fluid at 50°C [122°F]
1 0
12345
PM
6
11
12107 89
Charge relief
valve
Available setting
bar [PSI]
Without -
00
With
For M and N controls 10 [145]
10
For servo controls 20 [290]
20
PM10 - Variable displacement pump POCLAIN HYDRAULICS
18 15/11/2017
Charge pump
Charge flow is required on all PM10 pumps used in closed circuit installations. The charge pump provides flow to make up internal leakage,
maintain a positive pressure in the main circuit, provide flow for cooling and filtration, replace any leakage losses from external valving or
auxiliary systems, and to provide flow and pressure for the control system.
Many factors influence the charge flow requirements. These factors include system pressure, pump speed, pump swashplate angle, type of
fluid, temperature, size of heat exchanger, length and size of hydraulic lines, control response characteristics, auxiliary flow requirements,
hydrostatic motor type, etc.
Unusual application conditions may require a more detailed review of charge pump sizing. Charge pressure must be maintained at a specified
level under all operating conditions to prevent damage to the transmission. Poclain Hydraulics recommends testing under actual operating
conditions to verify this.
Charge pump sizing/selection
In most applications, a general guideline is that the charge pump displacement should be at least 20% of the main pump displacement.
M3 M4 G M1
M2ST2T1
A
B
Charge pump
Displacement
cm³/rev [in³/rev]
Rated speed
(rpm)
Without - -
00
With
For auxiliary mounting pad
F and G
4,9 [0.30] 3900
05
For auxiliary mounting pad A 7,0 [0.43] 3900
07
For tandem pump with auxiliary
mounting pad A and single pump
9,0 [0.55] 3900
08
Contact your Poclain Hydraulics application
engineer for more information.
1 0
12345
PM
6
11
12107 89
Pump version without internal charge pump is available. In this case an
external flow must provide charge pressure and charge flow in order to
assure the requested pump performance.
Pump without internal charge pump is also available. In this case an external flow must provide charge pressure and charge flow in order to
assure the requested pump performance.
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 19
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
Displacement limiters
PM10 are designed with mechanical displacement (stroke) limiters. You can limit maximum displacement of the pump to a certain per-
cent of its maximum displacement to near zero in both direction.
The displacement limiters are located on the both sides of the servo piston and are adjustable by screw.
By-pass
PM10 features a by-pass function. By-passing Port A and Port B is achieved by unscrewing a screw located on the cover. The by-pass
connect the ports A-B and must be use only in emergency case and only for short movement.
Take care in adjusting displacement limiters to avoid an undesirable condition of output flow
or speed. Retorque the sealing lock nut after every adjustment to prevent an unexpected
change in output conditions and to prevent external leakage during pump operation.
Max. displacement
adjustement
Neutral position
adjustement
By-pass screw
(unscrew max. 2 turns)
By-pass valve is intended for moving a machine for very short
distances at very slow speeds. It is NOT intended as tow valve.
To avoid leakage, do NOT exceed two turns of the screw.
PM10 - Variable displacement pump POCLAIN HYDRAULICS
20 15/11/2017
Mounting flange and shafts
SAE A - Splined shaft
S1 9 teeth; Max torque: 80 N.m [708 in.lbf]
S2 11 teeth; Max torque: 140 N.m [1 239 in.lbf]
1 0A
12345
PM
6 11
12107 89
23,7
[0.93]
6,4 [0.25]
0
-0,054
0
-0,1
[dia. 3.25 ]
16,4
[dia. 0.65 ]
7,85
[0.31]
31,5
[1.24]
0
-0.002
0
-0.00
Ø82,55
0
-0,054
0
-0,1
Ø
82.55
14,8
31,9
[1.25]
9 [0.35]
6,4
[0.25]
40,9
[1.61]
[dia. 3.25 ]
[dia. 0.58 ]
0
-0.004
-0,02
-0,04
Ø19,05
[dia. 0.75 ]
-0.0008
-0.001
0
-0,002
Splined ANSI B92.1a-1996
Pitch 16/32” DP
Pressure angle 30°
Tolerance class: 5
Splined ANSI B92.1a-1996
Pitch 16/32” DP
Pressure angle 30°
Tolerance class: 5
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 21
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
SAE A - Shaft with feather key
C2 Ø19 shaft; Max torque: 140 N.m [1 239 in.lbf]
SAE B - Shaft with feather key
C2 Ø19 shaft; Max torque: 140 N.m [1 239 in.lbf]
1 0A
12345
PM
6 11
12107 89
39,2 [1.54]
9,2
[0.36]
30
[1.18]
12
[0.47]
16
[0.63]
21
[0.83]
-0.054
-0.002
[dia. 3.25 ]
0
Ø
82,55
0
M6
6,4
[0.25]
-0,02
-0.001
[dia. 0.74 ]
0,05
Ø
19
0.002
[dia. 0.63]
Ø
16
4,75
-0,02
-0,05
5
[0.19]
Ø16
[dia. 0.63]
[0.19 dia. ]
-0.007
-0.001
6,5
[0.26]
Ra 0,8
Ra 0,8
Dimensions of key:
Definition of edges according to ISO 13 715
1 0B
12345
PM
6
11
12
107 89
39,2 [1.54]
9,2
[0.36]
30
[1.18]
12
[0.47]
16
[0.63]
21
[0.83]
-0.054
-0.002
[dia. 4.00 ]
0
Ø
101,6
0
M6
6,4
[0.25]
-0,02
-0.001
[dia. 0.74 ]
0,05
Ø
19
0.002
[dia. 0.63]
Ø
16
4,75
-0,02
-0,05
5
[0.19]
Ø16
[dia. 0.63]
[0.19 dia. ]
-0.007
-0.001
6,5
[0.26]
Ra 0,8
Ra 0,8
Dimensions of key:
Definition of edges according to ISO 13 715
PM10 - Variable displacement pump POCLAIN HYDRAULICS
22 15/11/2017
SAE B - Splined shaft
S2 11 teeth; Max torque: 140 N.m [1 239 in.lbf]
S3 13 teeth; Max torque: 220 N.m [1 947 in.lbf]
1 0B
12345
PM
6 11
12107 89
21,7
[0.85]
9,7
[0.38]
40,8
[1.61]
-0,05
-0.002
[dia. 4.00 ]
-0,02
-0,04
[dia. 0.75 ]
-0.0008
-0.001
0
Ø
101,6
0
Ø19,05
20
[0.79]
9,7
[0.38]
41,1
[1.62]
33
[1.30]
-0.05
-0.002
[dia. 4.00 ]
Ø 18
[dia. 0.71]
8,1 [0.32]
0
Ø
101,6
0
Splined ANSI B92.1a-1996
Pitch 16/32” DP
Pressure angle 30°
Tolerance class: 5
Splined ANSI B92.1a-1996
Pitch 16/32” DP
Pressure angle 30°
Tolerance class: 5
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 23
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
Auxiliary mounting pad
SAE A flange
Max. Torque: 80 N.m [708 in.lbf]
00 Without charge pump
07
With charge pump: 7,0 cm
3
/rev [0.43 in
3
/rev]
08
With charge pump: 9,0 cm
3
/rev [0.55 in
3
/rev]
1 0
12345
PM
6 11
12
A
107 89
106,4
[4.19]
1,3 [0.05]
8 [0.31]
182 [7.17]
106,4
[4.19]
20 [0.79]
4 x M10
+0,054
0
ø
82.55
ø 87
[dia. 3.25]
[dia. 3.25 ]
+0.002
0
Do not rotate the auxiliary mounting pad cover.
Splined ANSI
B92.1a-1996
5/8’’ Pitch 16/32” DP
Pressure angle 30°
Number of tooth: 9
Tolerance class: 5
PM10 - Variable displacement pump POCLAIN HYDRAULICS
24 15/11/2017
German group 1 flange
Max. torque: 48 N.m [425 in.lbf]
00 Without charge pump
05
With charge pump: 4,9 cm
3
/rev [0.30 in
3
/rev]
1 0
12345
PM
6
11
12
F
107 89
40
[1.57]
40
[1.57]
29,65 [1.17]
10,35 [0.41]
13
[0.51]
4,05
[0.16]
8 [0.31]
7,5
[0.30]
40
[1.57]
147 [5.79]
4 x M8
[dia. 1.26 ]
+0.025
0
+0.000
0
A-A
A
A
G
3/8" Gas
Ø32
35,3 [1.39]
13,3 [0.52]
8,15 [0.32]
2,15
[0.08]
182.3 [7.18]
8[0.31]
2 x M8
40
[1.57]
19,3
[0.76]
10,35
[0.41]
40
[1.57]
29,65
[1.17]
+0,025
0
[dia. 1.26 ]
+0.000
0
G
1/4" Gas
Ø32
Do not rotate the auxiliary mounting pad cover.
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 25
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
German group 2 flange
Max. torque: 70 N.m [620 in.lbf]
00 Without charge pump
05
With charge pump: 4,9 cm
3
/rev [0.30 in
3
/rev]
1 0
12345
PM
6
11
12
G
107 89
147 [5.79]
4 x M10
+0,030
+0
1,65 [0.06]
435 [0.17]
9 [0.35]
14
[0.55]
60
[2.36]
60
[2.36]
30
[1.18]
30
[1.18]
45,5
[1.79]
14,5
[0.57]
[dia. 2.05 ]
+0.001
+0
G
3/8" Gas
Ø52
60 [2.39]
45,5 [1.79]
100 [3.94]
60 [2.36]
14,5 [0.57]
31 [1.22]
9 [0.35]
3,85 [0.15]
2,15
[0.08]
178 [7]
8
[0.31]
4 x M10
+0.03
0
[dia. 2.05 ]
+0.00
0
14,5
[0.57]
G
1/4" Gas
Ø52
Do not rotate the auxiliary mounting pad cover.
PM10 - Variable displacement pump POCLAIN HYDRAULICS
26 15/11/2017
Tandem pumps
M
e3
for the next pump
M
e2
for the second pump
M
e
imput torque
M
e1
for the first pump
Torque required by gear pumps is additive.
Ensure requirements don’t exceed shaft torque ratings.
Max. torque intermediate coupling
80 N.m [708 in.lbf]
Next pumpRear axial
pump
Front axial
pump
M3 M4 G M1 A1 M5 M6
T1 S T M2 B1 T T2
M7 A2
M8 B2
Ports T and G of the first pump must be connected
with ports T and G of the second pump.
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 27
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
Number of charge pump
in the tandem
Axial
pump
Mounting flange
and shaft
Charge
pump
Auxiliary mounting
flange
1 charge pump*
Front
SAE A; 11 teeth
S2
With*
07
SAE A
A
SAE B; 11 teeth
S2
08
SAE B; 13 teeth
S3
Rear
SAE A; 9 teeth
S1
Without
00
Without auxiliary
mounting pad
S
German group 2
G
SAE A
A
2 charge pumps
Front
SAE A; 11 teeth
S2
With
07
SAE A
A
SAE B; 11 teeth
S2
08
SAE B; 13 teeth
S3
Rear
SAE A; 9 teeth
S1
With
05
Without auxiliary
mounting pad
S
German group 2
G
07
SAE A
A
08
1 0
12345
PM
6 11
12
A
107 8
9
1 0A S1PM
Front axial
pump
Rear axial
pump
+
* The charge pump in the front axial pump is mandatory.
PM10 - Variable displacement pump POCLAIN HYDRAULICS
28 15/11/2017
Gear pumps
Displacement Pressure Dimension Mass Efficiency
Continuous
max.
pressure
Max.
intermittent
pressure
Max. peak
pressure
ABC
cm
3
/rev
[cu.in/rev]
bar
[PSI]
bar
[PSI]
bar
[PSI]
mm
[in]
mm
[in]
mm
[in]
kg
[lb]
%
F
German group 1
01
1,6
[0.10]
210
[3 045]
240
[3 480]
260
[3 770]
76,4
[3.01]
67
[2.64]
70
[2.76]
0,95
[2.09]
95*
02
2,0
[0.12]
210
[3 045]
240
[3 480]
260
[3 770]
77,9
[3.07]
0,97
[2.14]
03
3,2
[0.19]
200
[2 900]
240
[3 480]
250
[3 625]
82,6
[3.25]
1,04
[2.29]
04
4,2
[0.26]
180
[2 610]
210
[3 045]
230
[3 335]
86,5
[3.41]
1,10
[2.43]
05
5,0
[0.30]
180
[2 610]
210
[3 045]
230
[3 335]
89,6
[3.53]
1,14
[2.51]
06
6,3
[0.38]
170
[2 465]
190
[2 755]
210
[3 045]
94,7
[3.73]
1,22
[2.69]
G
German group 2
04
4,5
[0.27]
250
[3 625]
270
[3 915]
290
[4 205]
90,3
[3.55]
88
[3.46]
100
[3.94]
2,30
[5.07]
95*
06
6,0
[0.37]
250
[3 625]
270
[3 915]
290
[4 205]
93,6
[3.68]
2,45
[5.40]
08
8,5
[0.52]
250
[3 625]
270
[3 915]
290
[4 205]
97,8
[3.85]
2,60
[5.73]
11
11,0
[0.67]
250
[3 625]
270
[3 915]
290
[4 205]
101,9
[4.01]
2,70
[5.95]
14
14,5
[0.88]
250
[3 625]
270
[3 915]
290
[4 205]
106,9
[4.21]
2,80
[6.17]
17
17,0
[1.04]
230
[3 335]
240
[3 480]
250
[3 625]
111,1
[4.37]
2,95
[6.51]
A
SAE A
04
4
[0.24]
250
[3 625]
270
[3 915]
290
[4 205]
93,0
[3.66]
106,4
[4.19]
82,5
[3.25]
2,30
[5.07]
95*
06
6,0
[0.37]
250
[3 625]
270
[3 915]
290
[4 205]
96,3
[3.68]
2,45
[5.40]
08
8,5
[0.52]
250
[3 625]
270
[3 915]
290
[4 205]
100,5
[3.96]
2,60
[5.73]
11
11,0
[0.67]
250
[3 625]
270
[3 915]
290
[4 205]
104,6
[4.12]
2,70
[5.95]
14
14
[0.85]
250
[3 625]
270
[3 915]
290
[4 205]
109,6
[4.21]
2,80
[6.17]
17
16,5
[1.01]
230
[3 335]
240
[3 480]
250
[3 625]
113,8
[4.37]
2,95
[6.51]
20
19,5
[1.19]
210
[3 045]
220
[3 190]
230
[3 335]
118,8
[4.68]
3,10
[6.84]
A
B
C
* Value collected during
the testing at 1500 rpm.
Gear pumps are always delivered flanged on the axial pump. They can not be sold alone.
Auxiliary mounting pad
Gear pump
1 0
12345
PM
6
11
12
107 89
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 29
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
PM10 - Variable displacement pump POCLAIN HYDRAULICS
30 15/11/2017
CONTROLS
Direct mechanical controls
The variation in pump displacement is obtained by rotating the lever shaft in a clockwise or counter-clockwise direction.
1 0B
12345
PM
6
11
12
107 89
X
Y
GM1AB
T1 T2 M2
S
Flow rate determination
Rotation
Pressure Output Input
Clockwise (R)
XAB
YBA
Counter clockwise (L)
XBA
YAB
Pump Max.
displacement
cm³/rev [in³/rev.]
Angle to reach
max. displacement
7,08 [0.43]
11°
9,08 [0.55]
14°
11,83 [0.72]
18°
14,32 [0.87] 17°
17,85 [1.09]
18°
20,40 [1.24] 19°
The mechanical linkage built by the customer to stroke the pump
should be able to return the pump to neutral in all conditions.
The spring return feature in the control unit is not a safety device.
Return spring
Without
M
With
N
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 31
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
Dimensions with controls M-N
A
B
A
B
A
B
A
B
Spring diameter
Control position
M
Ø2,8 mm
[dia. 0.110]
Ø3,0 mm
[dia. 0.118]
Without lever
MA0 NA028 NA030
Control on the top
Left
MAL NAL28 NAL30
Right
MAR NAR28 NAR30
Without lever
MB0 NB028 NB030
Control at the bottom
Left
MBL NBL28 NBL30
Right
MBR NBR28 NBR30
1 0B
12345
PM
6
11
12
107 89
X
49,5
[19.48]
40
[15.74]
100 [39.37]
85 [33.46]
20
[7.87]
Ø 8,3
[3.27 dia.]
80,75 [31.79]
93,25 [36.71]
73,75 [29.03]
6 [2.36]
73 [28.74]
Ø 17
[6.69 dia.]
See page 7 for other dimensions
and port characteristics.
View X
PM10 - Variable displacement pump POCLAIN HYDRAULICS
32 15/11/2017
Mechanical servo control with feed back
The variation in pump displacement is obtained by rotating the drive lever situated on the servo control. An internal channel, linked to the charge
pump, feeds a hydraulic servo valve which supplies oil into the cylinder which is in turn linked to the pump swashplate.
The maximum rotation of the Iever, with respect to 0 is 30° for both rotation directions; thus permitting the optimum control of the displacement.
At every lever angle there is a corresponding pump displacement.
On the 2 lines, between the pilot control A and the servo piston, 2 restrictors R1 and R2 are mounted which regulates the servo control shifting
speed, thus avoiding sudden accelerations and stoppages.
The effort of moving the lever is independent of the pressure and rpm.
1 0
12
A
345
PM
6
11
12107 89
Flow rate determination
Rotation
Control Output Input
Clockwise (R)
XAB
YBA
Counter clockwise (L)
XBA
YAB
Control shaft rotation (degrees)
To prevent damage to the control A a positive
mechanical stop must be provided for the
control A linkage.
Control lever torque vs
Control lever rotation
The spring return feature in the control unit is not a safety device.
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 33
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
Dimensions with control A
209 [8.23]
138 [5.43]
127 [5.0]
8
[4.36]
110,8 [4.36]
137,5 [5.41]
116 [4.36]
51
[2.0]
30°
30°
40,5
[1.59]
45
[1.77]
84
[3.31]
15
[0.59]
x
Y
R1 - R2
See page 7 for other dimensions
and port characteristics.
PM10 - Variable displacement pump POCLAIN HYDRAULICS
34 15/11/2017
Hydraulic servo control
The variation in pump displacement is obtained by adjusting the pressure on the M3 and M4 servo control connections by means of a hydraulic
proportional joystick (containing pressure reduction valves).
The joystick supply can by obtained by taking pressure from the auxiliary pump (G connection).
The servo control timing can be adjusted by inserting a restrictor on the joystick supply line (from 0.5 to 1 mm [from 0.02 to 0.04 in]) or between
the joystick and servo piston of the pump.
The servo control operation curve in both control directions goes from 4,5±0,5 to 14,5±0,5 bar [from 87±7.3 to 217±7.3 PSI]. The adjustment
curve of the hydraulic control system has to be wider (from 3,5 to 16 bar [from 50.8 to 232 PSI]).
With PM10 S control we can provide some base Joy-stick (require dedicated documentation).
1 0
12
S
345
PM
6 11
12107 89
For the selection of the regulation curve (with or without
step) of the Joy-stick contact your Poclain Hydraulics
application engineer.
0 50 100
5
10
15
20
72.5
145
217.5
290
[PSI]
bar
T1 T2 S M2
A
B
M1M3 M4 G
R1 R2
Flow rate determination
Rotation
Pressure Output Input
Clockwise (R)
M3 B A
M4 A B
Counter clockwise (L)
M3 A B
M4 B A
Pump displacement (%)
Possibility to add external
restrictors on demand.
The back pressure of the return line of the joystick and the
drive line of the pump have an influence on these values.
The spring return feature in the control unit is not a safety device.
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 35
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
Dimensions with control S
95 [3.74]
80 [3.15]
75.5 [2.97]
76 [2.99]
144 [5.67]
187.7 [7.39]
116.7 [4.59]
M3, R1
M4, R2
See page 7 for other dimensions
and port characteristics.
PM10 - Variable displacement pump POCLAIN HYDRAULICS
36 15/11/2017
Hydraulic servo control with feedback
The variation in pump displacement is obtained by adjusting the pressure on the M5 and M6 feed back system connections by means of a
hydraulic proportional joystick (containing pressure reduction valves).
The feedback function is obtained by a lever that connects the swashplate and the servo piston. To avoid sudden accelerations and stoppages
we introduce restrictors (R1 and R2) between the servo piston and the servo control.
The joystick supply can by obtained by taking pressure from the auxiliary pump (R connection).
The servo control feedback time can be adjusted by inserting a restrictor between the control block and the servo-control piston.
The servo control operation curve in both control directions goes from 6 to 15 bar [87 to 218 PSI].
The adjustment curve of the hydraulic control system has to be wider (5 ÷ 16 bar).
The feed-back system between swash plate and servo piston permit to mantain costant the displacement of the pump if change the pressure
between pump and hydraulic motor.
1 0
12
T
345
PM
6
11
12
107 89
M5 M6
M3
M4
T2 T1 S M2 B
BH
AM1G
R2R1
Flow rate determination
Rotation
Pressure Output Input
Clockwise (R)
M5 B A
M6 A B
Counter clockwise (L)
M5 A B
M6 B A
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 37
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
Dimensions with control T
129,5 [5.098]
32,5
[1.28]
95 [3.74]
67 [2.64]67 [2.64]
1/4”
1/4”
R1 - R2
M3
M4
M5
M6
PM10 - Variable displacement pump POCLAIN HYDRAULICS
38 15/11/2017
Electrical on-off servo control
Control with return spring
The reaching of the maximum
displacement in a time defined by
the R1 and R2 restrictors which are
positioned between the electrovalve
and the servo-control is obtained by
the continuous operation of an ON-
OFF electro-valve with an open-
circuit CETOP 2 connection.
If the electrovalve motion is stopped,
the pump goes back to “0” position
thanks to the servo control springs.
The pump can be supplied either
without electrovalve (B00) or with
clectro-valve (B12, B24 ).
Control without return spring
The variation in pump displacement
is obtained by the energizing of an
ON-OFF electro-valve with a closed
center CETOP 2 connection.
The displacement reached is in
relation to the starting time of the
electro-valve and to the diameter of
the R1and R2 restrictors which are
placed between the electrovalve
and the servo-control.
The pump can be supplied either
without electrovalve (C00) or with
electrovalve (C12, C24).
The servo control is without springs
and the setting of the pump at a
certain displacement is guaranteed
by the closed center of the
electrovalve.
1 0
12345
PM
6
11
12
107 89
1 0
12345
PM
6
11
12107 89
Flow rate determination
Rotation
Control Pressure Output Input
Clockwise (R)
EV1 A A B
EV2 B B A
Counter clockwise (L)
EV1 A B A
EV2 B A B
The spring return feature in the control unit is not a safety device.
Supply voltage
without
B00
12V
B12
24V
B24
Supply voltage
without
C00
12V
C12
24V
C24
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 39
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
Dimensions with controls B - C
R1 - R2
96,5 [3.80]
164,5 [6.48]
81,5 [3.21]
83 [3.27]
50
[1.97]
EV1
EV2
193 [7.60]
EV1
EV2
29,5 [1.16]
37,5 [1.48]
See page 7 for other dimensions
and port characteristics.
Type of connector:
Standard DIN 43650 on request Deutsch
PM10 - Variable displacement pump POCLAIN HYDRAULICS
40 15/11/2017
Electrico-proportional servo control
By means of a potentiometer and a control card, a current signal is applied to the proportional electrovalve coils
which adjust the pressure of the servo control connected to the pump swashplate.
At every position of the potentiometer lever, there is a corresponding swashplate position.
The flow rate direction depends on which coil is excited.
The reaction time can be controlled by ramps installed on the card and by restrictors (R1, R2)
positioned between the electrovalve and the servo control.
Electro-proportional servo control combined with Electronic control unit and appropriate software functions can
be used to reproduce an higher performances Automotive control.
1 0
12345
PM
6
11
12
107 89
Supply
voltage
12V
P12
24V
P24
850
600
475
725
219
288
425
350
150
0
50
100
M3
M4
R2
R1
M1GAB
M2ST1
T2
EP2EP1
356
Flow rate determination
Rotation
Control Output Input
Clockwise (R)
EP1 B A
EP2 A B
Counter clockwise (L)
EP1 A B
EP2 B A
Valve plate timing and regulation curve
of proportional valve influence the flow.
Contact your Poclain Hydraulics application
engineer for further info.
Pump displacement (%)
(no load on closed loop)
Current (mA) (12V)
Current (mA) (24V)
Solenoid specification
For valve
PWM signal 120 Hz
For coil
12V resistence 6,5 ȍ
24V resistence 26,5
ȍ
The current must not exceed 1500 mA
under 12V and 800 mA under 24V.
Electrovalve current vs Displacement
The spring return feature in the control unit is not a safety device.
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 41
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
Dimensions with control P
R1
R2
122 [4.80]
112,4 [4.42]
233 [9.17]
124 [4.88]
EP1 EP2
See page 7 for other dimensions
and port characteristics.
Type of connector:
Standard DIN 43650 on request Deutsch
PM10 - Variable displacement pump POCLAIN HYDRAULICS
42 15/11/2017
Electro-proportional control with feedback
By means of a potentiometer and of a control card, a voltage signal is applied to the proportional electro-valve
coils which adjust the pressure of the servo control connected to the pump swashplate.
The feedback function is obtained by a lever that connect servo piston and pilot block.
To avoid sudden accelerations and stoppages introduce restrictors (R1 and R2) between the servo piston and
the servo control.
At every position of the potentiometer lever, there is a corresponding swashplate position.
The flow rate direction depends on which coil is excited.
The reaction time can be controlled by ramps installed on the card and by restricters positioned between the
electro-valve and the servo control.
The feed back system permit to maintain costant the displacement of the pump if the pressure change between
pump and hydraulic motor.
1 0
12345
PM
6
11
12
107 89
GM1A1
BH1
B1M2S1T2
R
M4
M3
R1 R2
Flow rate determination
Rotation
Control Output Input
Clockwise (R)
EP1 B A
EP2 A B
Counter clockwise (L)
EP1 A B
EP2 B A
Supply
voltage
12V
Q12
24V
Q24
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 43
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
Dimensions with control Q
71 [2.79]
71 [2.79]
215 [8.46]
140 [5.51]
104 [4.09]
174 [6.85]
146 [5.74]
38 [1.49]
38 [1.49]
75,5 [2.97]
129 [5.07]
124 [4.88]
75,5 [2.97]
32,9 [1.29]
140 [5.51]
25.5 [1.00]
23 [0.91]
R1 - R2
Type of connector:
Standard DIN 43650 on request Deutsch
PM10 - Variable displacement pump POCLAIN HYDRAULICS
44 15/11/2017
Hydraulic automotive control
In relation to the input rotation rate, the pump swashplate positioning cylinder is actuated by the pressure of the
adjustment valve and a 4/3 electro-hydraulic valve, progressively positioning the swashplate. This provides a
continuously variable pump displacement. The direction of the supplied flow is determined by which of the two
solenoids is energized.
The pilot pressure increases proportionally to the rotation plate. A pump displacement increase corresponds to
the higher pilot pressure.
In case the prime mover is overloaded, the rotation rate decreases and the pilot pressure is reduced causing a
pump displacement reduction with a corresponding drop in absorbed power.
An "Inching" lever (option IC) is available to reduce the pilot pressure independently of the pump rotation speed.
The hydraulic automotive control is also available with an hydraulic inching (HI). For that the port K must be
connected to a pressure reducer valve (see page 53).
It is mandatory provide starting rpm required, the power and torque curve of the engine for the automotive valve
setting.
1 0
12345
PM
6
11
12
107 89
Supply
voltage
12V
D12
24V
D24
M3
M4
A
B
T1 T S
M2M1 R G
R1 R2
IC
EV1 EV2
Flow rate determination
Rotation
Control Output Input
Clockwise (R)
EV1 B A
EV2 A B
Counter clockwise (L)
EV1 A B
EV2 B A
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 45
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
Dimensions with control D and option IC
113 [4.45]
65 [2.56]
28,5
[1.12]
135 [5.31]
124 [4.88]
33
[1.29]
11,5
[0.45]
103 [4.06]90 [3.54]
33
[1.29]
11,5
[0.45]
178,75 [7.04]
105 [4.13]
45
[1.77]
15
[0.59]
9,75
[0.38]
Ø 9 [0.35 dia.]
M2
G
M1
R=1/4"
M3
M4
169 [6.65]
EV1 EV2
Port K
R2
R1
19
[0.75]
3
[0.12]
75,5 [2.97]
38
[1.49]
38
[1.49]
147 [5.79]
See page 7 for other dimensions
and port characteristics.
Type of connector:
Standard DIN 43650, on request Deutsch
Mechanical
inching lever
The restrictors R1 and R2 are under the electrical valve.
PM10 - Variable displacement pump POCLAIN HYDRAULICS
46 15/11/2017
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 47
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
OPTIONS
Roller bearing
It is an optional high capacity bearing.
Depending on the characteristics of shaft load, the duty cycle of the application and the expected life time of your application, Roller
bearing might be needed.
Consult your Poclain Hydraulics application engineer.
Fluorinated elastomer seals
Standard NBR sealing are designed to resist to temperature up to 90°C [194°F] and to HV type oils.
If your application is outside these limits, Fluorinated elastomer seals might be recommended.
Consult your Poclain Hydraulics application engineer.
UNF threads ports
1 0
12345
PM
6
11
CR
12
107 89
1 0
12345
PM
6
11
EV
12107 89
1 0
12345
PM
6
11
FU
12
107 89
Port
Function
ISO 11926-1
(option FU)
A-B
Services 3/4-16 UNF-2B
G
Auxiliary 7/16-20 UNF-2B
M1/M2
Gauge 7/16-20 UNF-2B
M3/M4
Servo control pilot 7/16-20 UNF-2B
S
Suction 1-1/16-12 UNF-2B
T1/T2
Drain 7/8-14 UNF-2B
PM10 - Variable displacement pump POCLAIN HYDRAULICS
48 15/11/2017
Filter on pressure line
The PM10 pumps can have a pressure filter without clogging
indicator (F0) or with clogging indicator (F2). The flow thru the
filter is only the flow that entry in the close loop. The filter fitness
is of 10 micron.
Max. working pressure: 30 bar [435 PSI].
Maximum pressure difference between filter cartridge input and output is 2 bar
[29 PSI]. When reaching 2 bar [29 PSI], the cartridge has to be changed.
Tightening torque: 35 Nm [309 in.lbf].
F0 Without clogging indicator F2 With clogging indicator
1 0
12345
PM
6
11
12107 89
Ø 62
[dia. 2.44]
124
[4.88]
151
[5.94]
80
[3.15]
111
[4.37]
41
[1.61]
30.75
[5.94]
76
[2.99]
29.5
[1.16]
15
[0.59]
128
[5.04]
M1
G1
G2
M2
M1
G1
G2
M2
12
12
NC
2 bar
T1T2
S
M2
A
B
M1
M3
M4
M2 M1G1G2
A
M3
M4
B
T1T2
S
Clogging indicator specification
Differential working
adjustment
3 ± 0,2 bar
[44 ± 3 PSI]
Working temperature
-30°C ~ 110 °C
[-22°F ~ 230°F]
Max. vibration level
50 g
Connector type
AMP super seal,
2 way
Current range
0,1-0,2 A max.
Normally closed contact.
Thread of clogging indicator is
internally connected to the ground.
Clogging indicator
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 49
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
Neutral position switch
For the control A it is possible to obtain a micro switch to avoid the start of the engine if the lever of the control is not in center
(zero position).
1 0
12
A
345
PM
6
11
MI
12107 89
Type of connector:
Deutsch DT04-2P
PM10 - Variable displacement pump POCLAIN HYDRAULICS
50 15/11/2017
External connections for filter
Safety valve
The pump PM10 control A can be provided with a safety valve VPU. Without current, the VPU disconnect the servo control from the charge
pressure and ingage negative brake.
1 0
12345
PM
6
11
F3
12
107 89
1 0
12
A
345
PM
6 11
VPU
12107 89
Type of connector:
Deutsch DT04-2P
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 51
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
The pump PM10 control S can be provided with a safety valve VPU. Without current, the VPU disconnect the servo control from the charge
pressure and ingage negative brake.
Safety valve
1 0
12
S
345
PM
6
11
VPU
12107 89
PM10 - Variable displacement pump POCLAIN HYDRAULICS
52 15/11/2017
Flushing valve
Inside the pump cover, a flushing valve can be fitted with discharge inside the pump casing by means of a calibrated hole. The flushing valve is
useful in case the temperature of the oil in the closed circuit is too high.
Mechanical inching
For hydraulic automotive control D. An "Inching" lever is available to reduce the pilot pressure independently of the pump rotation speed.
See Hydraulic automotive control D (page 42).
1 0
12345
PM
6
11
VS
12107 89
114
[4.49]
31.5
[1.24]
R
M3 M4 M1
M2T2T1 S
A
B
G
Flushing valve
with internal drain
Consult your Poclain Hydraulics application engineer for
the size of restrictor of flushing valve.
1 0
12
D12
3
4
5
PM
6
11
IC
12
107 89
D24
or
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 53
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
K
R
G
T1
M2
M1
19
[0.75]
65
[2.56]
M3
M4
A
B
T1 T
M2M1 R G
R1
R2
IC
EV1
EV2
K
Hydraulic inching
For hydraulic automotive control D is available an hydraulic inching HI that consist in a connection K on the pump body to be connect with
a pressure reducer valve (for example brake pedal VB002 or VB012). See hydraulic automotive control D (page 42).
1 0
12
D12
3
4
5
PM
6
11
HI
12
107 89
D24
or
Finishing coat
The pumps can be delivered with finishing coat when requested. Standard paint is RAL 9005 (black color).
1 0
12345
PM
6
11
PA
12107 89
Consult your Poclain Hydraulics application engineer for
other colors of topcoat.
PM10 - Variable displacement pump POCLAIN HYDRAULICS
54 15/11/2017
Special version
Special execution and incorporate all the note that are not included in the defined options. Example of ES are: valve plate timing, assembly
specifications, test conditions, ...
Pressure cut-off valve
The function of the cut-off valve is to avoid that the pump absorbed power exceeds the machine engine power.
The cut-off valve is connected to A and B piston pump’s high pressure lines and is usually set at 20 to 30 bar [290 to 435 PSI] lower than
the maximum relief valve of the closed circuit.
The cut-off valve acts on the servo control operating pressure in order to reduce the pump displacement and the adsorbed power.
Customized identification plate
It is possible to provide our products with dedicated plate (your part number engraved on the plate) when requested.
1 0
12345
PM
6
11
ES
12
107 89
Consult your Poclain Hydraulics application engineer for
other possibilities.
1 0
12345
PM
6
11
LP
12
107 89
M2
G2
G1
M1
R
Pressure cut-off
setting
1 0
12345
PM
6
11
DP
12
107 89
This option is available only for minimum volume of 50
pieces.
Consult your Poclain Hydraulics application engineer for
other possibilities.
Max deep of the nipples for the connections M1-M2 and
G1-G2-R must be 10 mm.
POCLAIN HYDRAULICS Variable displacement pump - PM10
15/11/2017 55
System design
Parameters
Model
Code
Operating
Parameters
Technical
specifications
FeaturesOptions Controls
Anti-stall valve
Available for SAE A or SAE B, SD option consists of a block valve (same body as automotive valve) which provide a pressure signal for
the servo piston of the pump related to the speed of engine. In case of engine overload and consequent rpm reduction the SD valve
reduces the pressure for the servo piston and the pump de-stroke consequentially with an anti-stall effect.
1 0
4
2
A
3
1
5
PM
6
11
SD
12
107 89
B
or
For application of this option please contact
your Poclain Hydraulics application engineer.
www.poclain-hydraulics.com
15/11/2017
A35766B
Poclain Hydraulics reserves the right to make any modifications it deems necessary to the products described in this document
without prior notification.The information contained in this document must be confirmed by Poclain Hydraulics before any order is
submitted.
Illustrations are not binding.
The Poclain Hydraulics brand is the property of Poclain Hydraulics S.A.
