A16-F-R-00-H-S-K-A200-32408柱塞泵资料.pdf - 第4页

28 A Series V ariable Displacement Piston Pumps “A16” type perf ormance character istics OUT IN Control Piston Drain Port Pivot Shaft Yoke Swash Plate Slipper Retainer Spring, Yoke Return Piston Ass'y Cylinder Block…

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PISTON PUMPS
A Series
A
Series Variable Displacement Piston Pumps
Starting
Before first staring, fill pump case with clean operating
oil via the filling port.
In order to avoid air blockage when first starting, adjust
the control valves so that the discharged oil from the
pump is returned direct to the reservoir or the actuator
moves in a free load.
Setting Discharge Pressure and Delivery
At the time of shipment, the unit has been preset to
maximum delivery and minimum discharge pressure.
Adjust the preset delivery and pressure to meet your
system requirements.
Turning the adjustment screw clockwise, increases
pressure.
Adjustment of Discharge Pressure
Volume adjusted by each full turn of the pressure
adjustment screw
Model
A10
A16/A22
A37/A45/A56
A70
A90/A100
A145
370
600
1200
2100
2500
3300
Volume cm
3
[Volume of Pre-fill Oil Required]
Turning the flow adjustment screw clockwise, decreases
delivery.
Adjustment of Delivery
The minimum adjustable flow and adjustable volume of
each full turn of the delivery adjustment screw
Model Numbers
A10-FR01B
A10-FR01C/H
A16/A22/A37/A56-
＊
-R-01-B
A16/A22/A37/A56-
＊
-R-01-C
A16/A37/A56-
＊
-R-01-H
A70/A90/A100/A145-
＊
-R01B
A70/A90/A100/A145-
＊
-R01C
A70/A90/A100/A145-
＊
-R01H
A70/A90/A100/A145-
＊
-R01K
2.9
5.4
3.5
6.5
7.9
2.3
3.2
4.0
4.7
Adjustment Volume
MPa
1.1
1.4
2.0
2.9
3.9
4.4
4.8
5.2
A10
A16
A22
A37
A56
A70
A90
A100
2.0
4.0
6.0
10
12
36
56
62
7.2A145 83
Model
Adjustable volume
with each full turn
of the adjustment
screw
3
cm /rev
Minimum adjustment flow
3
cm /rev
28
A
Series Variable Displacement Piston Pumps
“A16” type performance characteristics
OUT
IN
Control Piston
Drain Port
Pivot
Shaft
Yoke
Swash Plate
Slipper Retainer
Spring, Yoke Return
Piston Ass'y
Cylinder Block
Port Plate
Flow Adj. Screw
Pressure Adj. Screw
Spool
A
Series Variable Displacement Piston Pumps
■ Features
● High efficiency
The efficiency properties in case of “A16”from are high
efficiencies to be shown below.
● Accomplishment of energy-saving
Because the overall efficiency is high and the cut-off
characteristics is sharp, thus the input power may be saved.
● Low noise level
In the “A16” pump, the noise level is as low as 57.3 dB(A)
[at the full cut-off pressure 21 MPa with speed 1500 r/min
one metre horizontally away from pump head cover.]
● Low heat generation
Because of small power loss, it is possible to reduce the rise
in oil temperature. Accordingly, capacity of a reservoir can
be reduced.
0
0
4
8
3
12
16
6
20
24
9
28
32
12
20
40
60
80
100
0 4 8 12 16 20
21
N＝1800r/min
40
50
60
70
80
N＝1500r/min
0 4 8 12 16 20 21
Volumetric Efficiency
Overall Efficiency
Output Flow
Input Power
Output Flow
L/min
Input Power kW
Pressure
MPa
Efficiency
%
Pressure MPa
Noise Level dB(A)
Full Cut-off
29
PISTON PUMPS
A Series
A
Series Variable Displacement Piston Pumps
PL PH
M
O
M
O
M
O
M
O
2
i
1
i
PL
PH
M
O
QH
QL
PL PH
SOL"OFF"
SOL"ON"
Pressure
Output Flow
Pressure
Output Flow
(S Input Voltage L)
(S Input Voltage L)
Pressure
Output Flow
(S
Input Current
i
L)
(S Input Current
i
L)
1
2
SOL
"OFF"
SOL
"ON"
Output Flow
PL PH
SOL
"OFF"
SOL
"ON"
Pressure
Output Flow
Pressure
Output Flow
Pressure
PL
PH
M
O
PL
PH
QH
QL
Pressure
Output Flow
M
O
■ Control Type
Control Type Graphic Symbols Performance Characteristics Explanation Page
"01"
Pressure
Compensator
Type
When the system pressure increases and comes close
to the preset cut-off pressure, the pump flow decreases
automatically while maintaining the set pressure as it
is.
31
"02"
Solenoid-two
Pressure
Control
Type
This type of control is ideal for an application where
the output power of the actuator has to be controlled
in two different load pressures while keeping the
actuator speed nearly constant.
53
"03"
Pressure
Compensator
with
Unloading
Type
It is suitable for a situation where a long unloading
time is required and heat generation and noise have
to be kept at their lowest levels.
•
The pump can be used in combination with the
multistage pressure control valve.
61
"04"
Proportional
Electro-
Hydraulic
Load
Sensing
Type
This is an energy-saving type control which regulates
the pump flow and load pressure to be at absolute
minimum necessary level to operate the actuator.
Pump flow rate and cut-off pressure are controlled
proportional to the input current to the control device
on the pump and the input current is regurated by the
specific amplifier.
62
"04E"
Electro-
Hydraulic
Proportional
Pressure &
Flow
Control
Type
This type of control has the pressure sensor and tilt
angle sensor in the pump. The pump is used with the
external amplifier (amplifier is integrated into pump
in case of "04EH").
Flow and pressure can be controlled in proportion to
input voltage by only one control valve.
The features has been greatly improved by electrical
feedback of swash plate tilt angle correspond to flow
rate and load pressure to control valve.
•
Linearity of input characteristics is excellent and
easy to set.
•
Hysteresis is lower, repeatability and reproducibility
are fine.
72
"04EH"
Electro-
Hydraulic
Proportional
Pressure &
Flow
Control
Type
(OBE Type)
82
"05"
Two-Pressure
Two-Flow
Control Type
by System
Pres.
This type of control is suitable for an application like
"Presses" where the changeover from rapid advance to
feed is required just when the pressing (pressurizing)
starts.
91
"06"
Two-Pressure
Two-Flow
Control Type
by Solenoid
Valve
This pump control is suitable for machining found
on machine tool, where machining starts after the
changeover from rapid advance, to feed has been
made.
92