VMC Group UN Series Heavy-Duty Spring Isolators are most frequently used to support machines on deep concrete foundations such as forging hammers and roll grinders. The UN Series isolator supports the structural members within the foundation. By adjusting the UN Isolator, both the machine and the foundation may be leveled. 

Separate snubbing and damping controls are available. A load range to 35,000 lbs. per isolator and deflections to 1.5" result in excellent shock and vibration attenuation.

Features & Benefits

  • 5,000 lbs. per isolator load range provides high vibration damping for heavy industrial equipment
  • Support of structural members permits leveling of both the machine and the foundation


  • Punch presses
  • Milling machines
  • Compressors
  • Pumping equipment
  • Drill presses
  • Drop hammers
  • Forging hammers
  • Lathes




The engineers we employ hold the highest industry-recognized credentials in structural analysis, elastomer development and system dynamics.


We are the first ISO accredited PCA ISO-17065, third-party certification body for special seismic certification of non-structural building components and their mounting configurations by the ICC’s International Accreditation Service.

Test & Measurement

We are the only ISO 17025:2005 Accredited Seismic Simulation Test Laboratory with a triaxial shake table owned and operated by California licensed Structural engineers.

Testing Services Update
DCL now offers Nuclear Qualification and Testing services.

In partnership with Greenberry Industrial, we now offer testing services that meet the requirements of ASME NQA-1.

Call for more information.