Enclosed Spring Mountings

Type ESB, ES, ES25, ECS25 and ECS50

A unique range of mountings designed primarily for building services applications where the control of low frequency vibration and noise emanating from mechanical plant is of paramount importance.

The benefits of a combined rubber and steel housing for the spring have helped establish the ES and ECS mountings as industry standards accepted by specifiers, equipment manufacturers and mechanical services installers alike.


  • Nitrile rubber (oil resistant) lower spring housing eliminates the possibility of metallic continuity and ensures excellent acoustic performance. Steel reinforced on ECS range.
  • Full enclosed captive assembly protects the spring and controls transient motion.
  • All steel components are zinc plated.

Typical Applications

  • Axial and Centrifugal Fans.
  • Air Handling Units.
  • Chillers and Cooling Towers.
  • Rotary and Multi Cylinder Compressors.
  • Diesel Generating Sets (ECS only).
  • Mechanical Test Rigs.
  • Isolation of sensitive equipment.
  • Colour coded helical steel springs to BS1726 Class B
  • laterally stable with 50% overload capacity.
  • Simple single screw height adjustment.
  • 6 mm thick ribbed rubber seating pads available for ES25 and ECS ranges.
  • Colour coded labels for easy identification.
  • Stainless Steel variants available.