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Piston pump advantage
High torque output: Due to the simultaneous action of multiple
pistons, the axial piston fixed motor can produce higher torque.
This makes it perform well in application scenarios that require
greater power, such as the walking mechanism and slewing mechanism
in heavy engineering machinery, and can easily drive the movement
of large equipment.
Wide speed range: Its speed can be adjusted over a wide range. By
changing parameters such as the flow and pressure of the hydraulic
oil, different speed outputs from low speed to high speed can be
achieved. In some occasions where precise speed control is
required, such as the spindle drive of machine tools, the axial
piston fixed motor can provide the appropriate speed according to
the requirements of the processing technology.
High efficiency: The volumetric efficiency and mechanical
efficiency of this motor are relatively high. High volumetric
efficiency means that the hydraulic oil is more fully utilized,
reducing the energy loss caused by internal leakage; high
mechanical efficiency means that less energy is lost in the process
of converting hydraulic energy into mechanical energy, thereby
improving the energy utilization of the entire system.
Size | 5 | 10 | 12 | 16 | 23 | 28 | 32 | 107 | 125 | 160 | 180 | 200 | 250 | 355 | 500 | 710 | 1000 | |||
Displacement geometric, per revolution | Vg | cm³ | 4.93 | 10.3 | 12 | 16 | 22.9 | 28.1 | 32 | 106.7 | 125 | 160.4 | 180 | 200 | 250 | 355 | 500 | 710 | 1000 | |
Nominal pressure | pnom | bar | 315 | 400 | 400 | 400 | 400 | 400 | 400 | 400 | 400 | 400 | 400 | 400 | 350 | 350 | 350 | 350 | 350 | |
Maximum pressure | pmax | bar | 350 | 450 | 450 | 450 | 450 | 450 | 450 | 450 | 450 | 450 | 450 | 450 | 400 | 400 | 400 | 400 | 400 | |
Maximum speed | nnom 1) | rpm | 10000 | 8000 | 8000 | 8000 | 6300 | 6300 | 6300 | 4000 | 4000 | 3600 | 3600 | 2750 | 2700 | 2240 | 2000 | 1600 | 1800 | |
nmax 2) | rpm | 11000 | 8800 | 8800 | 8800 | 6900 | 6900 | 6900 | 4400 | 4400 | 4000 | 4000 | 3000 | |||||||
Inlet flow 3) | at nnom | qV | l/min | 49 | 82 | 96 | 128 | 144 | 177 | 202 | 427 | 500 | 577 | 648 | 550 | 675 | 795 | 1000 | 1136 | 1600 |
Torque 4) | at pnom | M | Nm | 24.7 | 66 | 76 | 102 | 146 | 179 | 204 | 679 | 796 | 1021 | 1146 | 1273 | 1393 | 1978 | 2785 | 3955 | 5570 |
Rotary stiffness | c | kNm/rad | 0.63 | 0.92 | 1.25 | 1.59 | 2.56 | 2.93 | 3.12 | 11.2 | 11.9 | 17.4 | 18.2 | 57.3 | 73.1 | 96.1 | 144 | 270 | 324 | |
Moment of inertia for rotary group | JTW | kg·m² | 0.00006 | 0.0004 | 0.0004 | 0.0004 | 0.0012 | 0.0012 | 0.0012 | 0.0116 | 0.0116 | 0.022 | 0.022 | 0.0353 | 0.061 | 0.102 | 0.178 | 0.55 | 0.55 | |
Maximum angular acceleration | ɑ | rad/s² | 5000 | 5000 | 5000 | 5000 | 6500 | 6500 | 6500 | 4500 | 4500 | 3500 | 3500 | 11000 | 10000 | 8300 | 5500 | 4300 | 4500 | |
Case volume | V | l | 0.17 | 0.17 | 0.17 | 0.2 | 0.2 | 0.2 | 0.8 | 0.8 | 1.1 | 1.1 | 2.7 | 2.5 | 3.5 | 4.2 | 8 | 8 | ||
Weight (approx.) | m | kg | 2.5 | 5.4 | 5.4 | 5.4 | 9.5 | 9.5 | 9.5 | 32 | 32 | 45 | 45 | 66 | 73 | 110 | 155 | 32 |
Application areas
Engineering machinery: In excavators, loaders, cranes and other
equipment, axial piston fixed motors are used to drive the movement
of walking devices and working devices (such as dipper arms and
booms of excavators). Their high torque and adjustable speed
characteristics can meet the working requirements of engineering
machinery under different working conditions.
Marine equipment: In the steering system and anchor windlass system
of ships, axial piston fixed motors can provide reliable power to
ensure the normal operation of ship maneuvers and mooring
equipment. It can also maintain good performance in harsh marine
environments and adapt to the long-term stable operation of ships.
Industrial automation equipment: In some automated production
lines, machine tools and other equipment that require precise
control of movement, axial piston fixed motors can be used as power
sources. Through advanced hydraulic control systems, high-precision
position control and speed control can be achieved to improve
product processing quality and production efficiency.