Revolutionizing Precision Motion with Hydrostatic Technology
Background
For over 30 years, Uranus has specialized in high-performance hydraulic cylinders. In 2013, we developed China’s first 350 Hz high-frequency hydrostatic servo cylinder, applied in a 250 g geotechnical centrifuge shaker—filling a domestic gap, reaching advanced international levels, and winning a National Science & Technology Award.
Principle & Advantages
● Hydrostatic non-contact support: A high-stiffness oil film between piston rod and guide bushing eliminates Coulomb friction, achieving near “zero-friction” motion.
● Smart closed-loop control: Servo valve bandwidth 100 Hz; built-in/external high-resolution displacement sensors ensure precise synchronization with high-frequency commands.
● Outstanding frequency response: −3 dB amplitude characteristic covers 50 Hz to several hundred Hz, capable of accurately reproducing complex non-sinusoidal waveforms.
Key Performance
● Micron-level precision and ultra-smooth low-speed motion
● High oil-film stiffness ensures strong anti-disturbance and excellent stability
● Withstands high radial/axial loads under harsh conditions
High-Frequency Response Hydrostatic Servo Hydraulic Cylinder
Applications
Successfully applied in:
● Aerospace vibration simulation
● Mold oscillation in steel continuous casting
● Material fatigue testing machines
● Automotive road impact and tire simulation platforms
● Ultra-gravity centrifuge vibration rigs
● High-frequency servo pressing and cold forging equipment
Customization & Cooperation
Non-standard customization and OEM are supported, delivering tailored solutions for advanced equipment.
Low-Friction Sealed High-Frequency Vibration Servo Hydraulic Cylinder
Representative Models & Specifications
1、USY1302JD220/105-40H
Bore 220 mm; Rod 105 mm; Stroke ±20 mm
Working pressure 21 MPa; Test pressure 32 MPa; Case drain <0.02 MPa
Medium: Hydraulic oil; Temp −10℃~+80℃
Start pressure <0.1 MPa; Vibration 5–350 Hz
External displacement sensor
Application: 250 g centrifuge
2、USY2202T230/160-120HS
Bore 220 mm; Rod 105 mm; Stroke ±20 mm
Working pressure 21 MPa; Test pressure 32 MPa
Medium: Hydraulic oil; Temp −10℃~+80℃
External leakage <7 L/min; Start <0.1 MPa; Vibration 5–350 Hz
Built-in displacement sensor
3、FLZJ-B + USY2210T110/80-110HS (Tire Load Simulator Actuator)
Bore 110 mm; Rod 80 mm; Stroke ±55 mm (Cushion 15×2)
Working pressure 28 MPa; Test pressure 35 MPa; Hydrostatic bearing 28 MPa
External leakage <10 L/min; Start <0.1 MPa
Built-in displacement sensor
4. WZTJ + 4×USY2211Q190/160-150HS (Rotary High-Frequency Oscillation Cylinder)
Bore 190 mm; Rod 160 mm; Stroke 180 mm (Cushion 15×2)
Working pressure 28 MPa; Test pressure 35 MPa; Hydrostatic bearing 28 MPa
External leakage <10 L/min; Start <0.1 MPa
Built-in displacement sensor
5. WZTJ + 4×USY2211Q190/160-150HS (Rotary High-Frequency Oscillation Cylinder)
Bore 190 mm; Rod 160 mm; Stroke 180 mm (Cushion 15×2)
Working pressure 28 MPa; Test pressure 35 MPa; Hydrostatic bearing 28 MPa
External leakage <10 L/min; Start <0.1 MPa
Built-in displacement sensor
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