SDS Type Diaphragm Air Floating Vibration Isolator
SDS Type Diaphragm Air Floating Vibration Isolator is a next-generation pneumatic vibration control device designed for ultra-precision equipment. Featuring ultra-low natural frequencies, air-floating support, and automatic leveling, it effectively isolates vibrations across a wide frequency range. It is widely used in advanced fields such as aerospace, semiconductor manufacturing, metrology, and medical imaging.

What are the performance specifications of the SDS diaphragm air floating isolator?
The SDS diaphragm air floating isolator offers industry-leading vibration isolation through the following core specifications:
Vertical natural frequency: 2–3.5 Hz (depending on load)
Horizontal natural frequency: 2–3.5 Hz (related to base stiffness)
System stabilization time: Less than 1.5 seconds (to achieve 90% vibration attenuation)
Effective tuning time: Less than 0.5 seconds
Repeat positioning accuracy: ±0.01 mm (equipped with Casby high-precision valve)
Vibration control level: VC-C class (ISO-ANSI compliant)
Working temperature: -57°C to +60°C
Isolation performance:
Over 85% vibration attenuation across the full frequency domain
Over 90% at 50 Hz
Over 99% at 100 Hz
Adjustable equivalent stiffness and damping, adaptable for changing loads and environments
These parameters allow the isolator to provide precise control in sensitive environments where vibration can compromise accuracy or safety.
In which industries is the SDS air floating isolator used?
This isolator is ideal for scenarios requiring extreme vibration control, including:
Precision metrology instruments (e.g., laser interferometers)
Optical inspection systems (e.g., photolithography equipment)
Medical imaging devices (e.g., MRI scanners)
Nano-scale processing equipment
Ultra-precision CNC or grinding machines
High-precision equipment in aerospace and military sectors
With its adaptive pressure control and air-floating isolation design, it ensures the long-term stability and accuracy of delicate instruments in demanding environments.
What are the unique features of the SDS diaphragm air floating vibration isolator?
The SDS isolator is equipped with smart vibration control technologies:
1. Automatic Leveling System
Ensures repeatable positioning accuracy of ±0.01 mm
Dual-mode adjustment:
Inflation mode for overload compensation
Pressure relief mode for underload balancing
2. Adaptive Vibration Isolation
Automatic pressure matching within the working range of 0.3–0.6 MPa
Nonlinear stiffness compensation for dynamic vibration isolation under variable loads
Its “air-floating” design reduces mechanical contact, minimizing transmission of high-frequency vibrations, making it an ideal choice for high-end vibration-sensitive environments.
SDS Type Diaphragm Air Floating Vibration Isolator


SDS Type Diaphragm Air Floating Vibration Isolator Data Chart
NO. | A (mm) | B (mm) | C (mm) | D (Thread) | D1 (mm) | d (mm) | H (mm) | Height Range (mm) | Optimum Load (kg) |
---|---|---|---|---|---|---|---|---|---|
SDS001 | 78 | 65 | 108 | M10 | 60 | 6.5 | 100 | ±4 | 100 |
SDS002 | 110 | 100 | 140 | M12 | 60 | 6.5 | 100 | ±4 | 150 |
SDS003 | 130 | 108 | 160 | M12 | 60 | 6.5 | 100 | ±4 | 400 |
SDS004 | 200 | 180 | 230 | M16 | 60 | 6.5 | 100 | ±4 | 700 |
SDS005 | 260 | 240 | 290 | M16 | 60 | 6.5 | 100 | ±4 | 1000 |
SDS006 | 300 | 250 | 330 | M16 | 60 | 6.5 | 100 | ±4 | 1500 |
Measured curve graph

The gray curve represents the vibration acceler-ation before vibration isolation; the red curverepresents the vibration acceleration after vibra.tion isolation.

Under rated load, the natural frequency of theequipment is below 3.5HZ.The natural frequencywill be affected by the weight of the load, and thenatural frequency ofthe system will increasewhen the load is insufficient.

When the system is affected by external disturbances, the self-balancing time is within 1.5s. Theamplitude decays by 90% in less than 0.5s.
We are a manufacturer specializing in the research and production of rubber air springs, with over 30 years of experience. Our products can serve as replacements for internationally renowned brands such as Firestone, Contitech, Dunlop (FR), Festo, Norgren, and Weforma.
Due to limited information available on our website, please email us at [email protected] for more detailed drawings and specifications of our air springs