Minus K Technology (Inglewood, CA) has released the CM-1 compact, high-capacity, low-frequency, negative-stiffness isolator designed to support heavy payloads while reducing low-frequency vibrations. The isolator comes in several capacity ranges to match vibration-sensitive instruments such as SPMs, micro-hardness testers, profilers, interferometers, electron microscopes, or other imaging systems, for weight loads from 50 to 800 pounds. The isolator delivers a vertical natural frequency of 1/2 Hz or less, which can be achieved over the entire load range. Horizontal natural frequency is load-dependent. The unit is completely passive, using no air or electricity, and can be combined into multi-isolator systems to support heavy payloads. They can be placed on pedestals to bring them to an appropriate height to retrofit existing air tables.
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