Cup Spring Mounts


Easyflex EFCUS Type Spring Isolators are highly effective for control of both high and low frequency vibration produced by reciprocating air or refrigeration compressors, pumps, packaged air handling and air conditioning equipment, centrifugal and axial fans, internal combustion engines, etc. The Type Spring Isolators are free standing and laterally stable spring isolators. The coils are designed with an excellent ratio between the coil outer diameter and operating height, ensuring lateral stability. In all of our designs, this ratio is a minimum of 0.80 and many of our springs have approximately a 1:1 ratio. In addition, our coils are designed with low operating stresses, thus ensuring a long operating life for the isolator. The EFCUS Type Spring Isolators also feature weldless construction. The spring coils are not welded to steel plates. Instead, the EFCUS Type Spring Isolators are assembled to elastomeric cups and steel plate bases with two mounting holes for attachment to structure – providing durability and flexibility. The series also include a built-in leveling device for simplified installation. The product incorporates a color-coded steel spring for ease of identification and inspection in the field. All of our open spring isolators have leveling capability and include a bolt hole in the bottom cup.

Features & Benefits

  • Loads range from 30-1250 kg
  • Free-standing spring isolators offer a 1:1 lateral stability ratio
  • Built-in leveling device offers simplified installation
  • Weldless construction provides flexibility in replacing or interchanging springs
  • Color-coded springs provide easy identification of isolators for installation and inspection

Vibration isolators shall be free standing, unhoused, laterally stabile steel springs. Springs shall have a lateral stiffness greater than 1.0 times the rated vertical stiffness and shall be designed to provide a minimum 50% overload capacity.

Springs shall be assembled or welded between top and bottom load plates. The upper load plate shall be provided with steel leveling bolts, lock nut and washer for attachment to the supported equipment. The lower load plate shall incorporate a non-skid noise isolation pad and shall have provisions for bolting the isolator to the supporting structure, as required.

Springs shall be selected to provide operating static deflections shown on the Vibration Isolation Schedule or as otherwise indicated on the project documents. Springs shall be color coded or otherwise identified to indicate load capacity.

Spring Vibration Isolators for floor-mounted equipment shall be Model EFCUS as manufactured by Kanwal Industrial Corporation (Easyflex).

Expert Advice for Your Application

No two Applications are the same. We will be happy to go over your application in detail and discuss the possibility of using this product for your application. Would you like some personal advice or do you have any questions? We look forward to supporting you.

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