Minus K Technology

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Low Frequency Vibration Isolation & Isolators

Low frequency vibration isolator for weight loads from 50 to 1050 lbs. and 1/2 Hz performance vertical and horizontal.

The CM-1 is a compact high capacity, low-frequency negative-stiffness isolator. As with all Minus K isolators, they are completely passive and use no air or electricity. The isolators can be combined into multi isolator systems to support heavy payloads while taking up very little room themselves.

The CM-1 isolators can be placed on pedestals to bring them to an appropriate height to retrofit your existing air table, enabling you to keep your existing table top and achieve much better isolation.

The CM-1 isolators come in several capacity ranges to match your vibration-sensitive instruments such as SPMs (AFMS, STMs, etc), micro-hardness testers, profilers, interferometers, electron microscopes, or other imaging systems.

If needed, the CM-1 isolators can be customized to achieve user specific needs. Eg., different horizontal and vertical frequencies, damping, etc. They can also be made cleanroom and vacuum. compatible.

See a typical performance curve for this product.

**For International Orders, A Handling Fee of 5% is Added.

CM-1 Specification Sheet



CM-1s on pedestals with support frame
(pedestal anchors are not needed)

Weight: Approximately 26 lb (11.8 kg)

7.875" W x 7.875" D x 8.5" H
(200mm W x 200mm D x 216mm H)

Approximate payload weight range:
Model Payload Range*
75 - 200 lb 
(34 - 90.7 kg)
200 - 500 lb 
(90.7 - 226.8 kg)
500 - 800 lb 
(226.8 - 362.9 kg)
750 - 1050 lb 
(340.2 - 476.3 kg)


  • Vertical natural frequency of 1/2 Hz or less can be achieved over the entire load range.
  • Horizontal natural frequency is load dependent. 1/2 Hz or less can be achieved at or near the nominal load.
Simple Set-Up and Adjustment



CM-1 pedestals can be made to bring them the isolators to an appropriate height to retrofit your existing air table. Contact us for a quote.

CM-1s on pedestals with a breadboard
(pedestals must be anchored to the floor)


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