SHAA Type Spring lsolator
In modern office buildings, schools, and hospitals, the use of lightweight construction materials means that even small forces can cause noticeable vibrations. The SHAA and SHAB rubber-and-spring vibration isolation hangers are specifically engineered for light point-load applications, providing efficient isolation from structure-borne vibrations to maintain a quiet and stable environment.
What are SHAA and SHAB spring vibration isolation hangers?
SHAA and SHAB are light-duty vibration isolation hangers designed to reduce structure-borne vibration and noise in modern buildings such as offices, schools, and hospitals. With lighter construction materials increasingly common, even small energy sources like fans or piping can generate disruptive vibrations. These hangers combine free-standing steel springs with molded elastomeric elements to provide efficient vibration isolation for lighter point load applications, ensuring comfort and acoustic performance.
Where can SHAA and SHAB vibration isolation hangers be applied?
These isolation hangers are commonly used in applications such as:
Fan coil boxes
Light-duty fans
Suspended piping systems
Ductwork installations
By isolating these systems, SHAA and SHAB effectively minimize noise transmission and vibration, making them suitable for environments where comfort and quiet operation are critical, such as hospitals, schools, and residential spaces.
Related Content: In HVAC systems, vibration control is essential to avoid structure-borne noise. Using the right isolation hanger ensures stable and long-term performance.
Product Structure & Features
Combination Structure:
Free-standing, laterally stable steel springs in series with molded elastomer elements, assembled into stamped and welded hanger brackets.
Surface Treatment:
Brackets are electro-zinc plated, providing excellent corrosion resistance.
Color Identification:
Springs are color-coded for quick load capacity recognition, simplifying installation and maintenance.
Stability:
Lateral stiffness is not less than 1.0 times the rated vertical stiffness, preventing lateral sway during equipment operation.
Overload Capacity:
The hanger bracket can withstand up to 500% overload without failure, ensuring safety and reliability.
Vibration Isolation Performance:
SHAA: 1″ (25 mm) deflection, suitable for loads of 17–71 lbs (8–32 kg).
SHAB: 0.5″ (13 mm) deflection, suitable for loads of 15–70 lbs (7–32 kg).
Additional Advantages:
Equipped with molded neoprene rubber bottom caps to prevent short-circuiting caused by rod misalignment, while also isolating high-frequency noise such as fan blade passage sound.
What are the advantages of SHAA and SHAB compared with standard hangers?
Unlike conventional hangers, SHAA and SHAB are designed with combined spring and elastomer elements for dual protection. Their advantages include:
High efficiency in isolating low and high-frequency vibrations.
Deflection capacity: SHAA provides 1″ (25 mm) deflection under 17–71 lbs (8–32 kg) loads; SHAB provides 0.5″ (13 mm) deflection under 15–70 lbs (7–32 kg) loads.
Molded neoprene rubber caps: prevent spring short-circuiting due to rod misalignment and attenuate high-frequency noise like fan blade passage sound.
Durability: Hanger brackets carry up to 500% overload without failure.
Related Content: For projects requiring precise vibration control, choosing between SHAA and SHAB depends on the load and deflection requirements specified in the vibration isolation schedule.
What are the structural features of SHAA and SHAB spring hangers?
The SHAA and SHAB spring hangers are engineered with a unique combination of spring stability and elastomer flexibility.
Key features:
Free-standing, laterally stable steel springs in series with elastomer elements.
Stamped and welded steel brackets, finished with electro-zinc plating for corrosion resistance.
Color-coded spring elements for easy load identification.
Neoprene elastomer inserts molded from oil-resistant compounds.
Compatible with threaded rods up to 3/8″ (10 mm).
This design not only improves vibration isolation efficiency but also extends service life under diverse environmental conditions.
How should SHAA and SHAB vibration isolation hangers be selected and installed?
Proper selection ensures optimal performance. Key considerations include:
Load capacity: Select based on actual equipment load (within 15–71 lbs range).
Deflection requirement: Match spring deflection (0.5″ or 1″) to the natural frequency required by the system.
Installation: Ensure correct threaded rod alignment to avoid stress on the spring. The neoprene bottom cap protects against misalignment and ensures long-term stability.
Related Content: Manufacturers typically recommend consulting the Vibration Isolation Schedule in the project documents to select the correct hanger model for each application.
| Type | Load (kg) | Deflection (mm) | Color | Free HT. (mm) | O.D. (mm) | H (mm) | W (mm) | A (mm) | Dmax (mm) |
|---|---|---|---|---|---|---|---|---|---|
| SHAA-1-17 | 8 | 25 | Blue | 64 | 31 | 101 | 55 | 38 | 10 |
| SHAA-1-25 | 11 | 26 | Black | 64 | 31 | 101 | 55 | 38 | 10 |
| SHAA-1-45 | 20 | 26 | Brown | 64 | 31 | 101 | 55 | 38 | 10 |
| SHAA-1-55 | 25 | 23 | Orange | 64 | 31 | 101 | 55 | 38 | 10 |
| SHAA-1-71 | 32 | 21 | Red | 64 | 31 | 101 | 55 | 38 | 10 |
| SHAA-1-90 | 41 | 20 | Beige | 64 | 31 | 101 | 55 | 38 | 10 |
| SHAA-1-130 | 59 | 15 | White | 64 | 31 | 101 | 55 | 38 | 10 |
| SHAA-1-270 | 122 | 13 | Purple | 64 | 31 | 101 | 55 | 38 | 10 |
| SHAB-15 | 7 | 12 | Blue | 38 | 31 | 69 | 55 | 38 | 10 |
| SHAB-30 | 14 | 14 | Gray | 38 | 31 | 69 | 55 | 38 | 10 |
| SHAB-50 | 23 | 12 | Silver | 38 | 31 | 69 | 55 | 38 | 10 |
| SHAB-70 | 32 | 11 | Green | 38 | 31 | 69 | 55 | 38 | 10 |