Shock Absorbing Dampers

 Advanced Rubber Dampers for HDD Impact and Vibration Protection

Yamauchi’s shock-absorbing dampers are precision-engineered from low-hardness rubber not gel or elastomer offering superior performance in limited spaces. Shock-absorbing dampers are typically produced with low-hardness elastomer or gel materials. These dampers effectively absorb impact from drops and shocks while simultaneously isolating vibration during normal device operation, contributing to stable HDD performance and long-term reliability.

Engineered for Design Flexibility and Long-Term Stability

Unlike gel-based solutions, Yamauchi’s rubber dampers can be molded into complex, compact geometries; tailored for optimal performance in specific devices. The rubber’s crosslinked 3D network ensures durability and resistance to degradation over time, helping improve product life and maintain HDD operational stability. Our dampers are trusted by leading device manufacturers for their proven reliability and adaptability.

Impacts can be simulated through CAE. This theoretical simulation allows a detailed examination of materials and shapes before producing molds

Image analysis using a high-speed camera lets us visualize the impact-absorbing effect at the prototype production stage

Relationship Between Loss Coefficient and Change of Speed

Figure 1 showcases the response of two materials with differing loss coefficients to impact force

• Red Curve: Material with low loss coefficient
• Green Curve: Material with a high loss coefficient

Materials with a higher loss coefficient dissipate impact energy more efficiently by converting more of it into heat. As shown, this results in:

• Lower peak impact force
• Shorter impact duration

This demonstrates that materials with larger loss coefficients are more effective in attenuating shocks and minimizing vibration transmission, making them ideal for applications requiring high impact resistance.