A90 series yuken Variable piston pump

YUKEN A series variable piston pumps have a wide range of displacement, ranging from 10cm3/rev to 219cm3/Rev. Common displacement includes：
A10 series :  displacement 10.0cm3/rev
A16 series :  displacement 15.8cm3/rev
A22 series :  displacement 22.2cm3/rev
A37 series :  displacement 36.9cm3/rev
A56 series :  displacement 56.2cm3/rev
A70 series :  displacement 70.0cm3/rev
A90 series :  displacement 91.0cm3/rev
A145 series :  displacement 145cm3/rev

YUKEN A90 series variable piston pump specifications and characteristics are as follows：
1. Basic parameters
Brand and model
Brand: YUKEN
Series: A90 series variable piston pump
Typical models: A90-FR01CS-60, A90-FR01HS-60, A90-FR01KS-60, etc.
Working principle
Axial piston pump, variable hydraulic pump, by adjusting the angle of the swash plate to achieve flow change.
Nominal displacement
Displacement range: 10~385cc (the specific model varies), such as A90-FR01CS-60, the displacement is adjustable to meet different flow requirements.
Pressure and speed
Rated pressure: 24MPa (some models can reach up to 700bar, such as A90-FR01HS-60).
Rated speed: 100~1800r/min, suitable for a variety of working conditions.
Working pressure range: usually 16~28MPa, some high-pressure models can reach 700bar.
Efficiency and physical characteristics
Volumetric efficiency: ≥99%, total efficiency ≥98%.
Material: cast iron or high-strength alloy steel, and wear-resistant ceramics are used for key components.
Weight: About 10~121kg (depending on the model and configuration).
Noise: ≤100dB(A).

2. Performance and functional characteristics
Variable control
It supports advanced technologies such as pressure compensation and sensitive control of electro-hydraulic proportional load to achieve precise adjustment of flow and pressure.
For example, A90-FR01HS-60 is equipped with a pressure compensator, which can automatically adjust the output pressure to improve system efficiency.
Low noise and long life
The swash plate structure design and high-quality materials are used to reduce vibration and noise (such as A90-FR01KS-60 noise ≤100dB).
Seals and high-quality materials ensure long-term stable operation and have a life span of tens of thousands of hours.
Safety protection
Built-in overload protection and pressure shock absorption mechanism to prevent equipment damage.
Some models (such as A90-FR01KS-60) are equipped with pressure cutters, which automatically stop when the system pressure is too high.
Medium and temperature adaptability
Applicable medium: Clean petroleum-based hydraulic oil, ISO VG35 or 46 viscosity grade is recommended.
Working temperature range: 0~60℃, viscosity range 20~400mm2/s.

3. Installation and maintenance requirements
Installation specification
The position of the refueling port is upward, and a rubber shockproof pad is used to reduce vibration.
Using a flexible coupling, the error of different axis degrees is allowed to be <0.1mm and the angle error is <0.2°.
≥100µm (150 mesh) fuel tank filter is installed at the oil suction port, and <10µm pipeline oil filter is installed in the oil return circuit.
Maintenance points
Check the quality of the oil regularly, and control the pollution level within NAS10.
Monitor the temperature of the pump body to avoid performance degradation caused by overheating.
Check the seals and connectors to ensure that there are no leaks.

4. typical application scenarios
Construction machinery
The walking and operating system of excavators and loaders provide precise power control.
Injection molding machinery
Drive clamping, injection, ejection and other actions to ensure molding accuracy and efficiency.
Metallurgical equipment
High-pressure hydraulic systems, such as rolling mills, continuous casters, etc.
Ships and marine platforms
Steering gear, deck machinery and other key equipment.
Automated production line
High-precision flow and pressure control, such as robots, assembly lines, etc.