Vibration Isolation Engineering
Each isolator is individually tuned using modal analysis to avoid the operating frequency range of your compressor. Field-tested for petrochemical and manufacturing environments.
Common questions about vibration isolation for compressors, dampers, pads, and spring isolators.
Modal analysis calculates the natural frequencies of a compressor assembly and its foundation. We use it to tune each Heavy-Duty Helical Spring Isolator so its resonant frequency falls outside the compressor's operating range. This prevents amplification of vibration and reduces floor-transmitted forces by up to 90%.
Yes. The Polyurethane Kinetic Absorption Pad is formulated with a closed-cell structure that resists oils, coolants, and many industrial chemicals. It maintains its damping properties even after prolonged contact with lubricants common in compressor rooms.
Elastomeric dampers are best for mid-frequency vibration (20–200 Hz) and lighter static loads. Spring isolators are preferred for heavy compressors over 10,000 lbs where low-frequency isolation below 10 Hz is required. Our team can review your compressor specs and recommend the correct type.
Under normal industrial conditions, the HD Elastomeric Damper Series lasts 8–12 years. The high-density elastomer resists creep and fatigue, and the damping performance remains stable within 5% of initial values over that period. Regular visual inspection every two years is recommended.
Yes. The Polyurethane Kinetic Absorption Pad is available in thicknesses from 6 mm to 50 mm. Each thickness is load-rated, and we can produce non-standard sizes for skid-mounted or irregularly shaped equipment. Contact us with your load and footprint details.
The Heavy-Duty Helical Spring Isolator uses a hot-dip galvanized steel casing with an additional epoxy coating. The neoprene base pad prevents metal-to-concrete contact. This combination meets ISO 9227 corrosion resistance standards for indoor and sheltered outdoor installations.
Scope and definitions for vibration isolation products
Every heavy-duty helical spring isolator is individually tuned using modal analysis of the specific compressor frame and foundation. The natural frequency of the spring assembly is calculated to fall below the lowest operating frequency of the compressor, ensuring resonance is avoided. For elastomeric dampers and polyurethane pads, modal analysis is applied to the mounting system as a whole, not to each pad individually.
Load ratings are based on static and dynamic loads measured at the mounting points under standard industrial conditions (ambient temperature 10–40°C, non-corrosive environment). Ratings do not account for shock loads, seismic events, or extreme thermal cycling. Contact our engineering team for derating factors if your installation involves any of these conditions.
Damping refers to the dissipation of vibrational energy within the elastomeric material itself, reducing the amplitude of resonance peaks. Absorption, as used for the polyurethane kinetic absorption pads, describes the conversion of kinetic energy into heat through internal friction within the cellular structure. Both reduce transmitted vibration, but damping is frequency-dependent while absorption is more broadband.
No. Each isolator is supplied as a standalone component. Mounting plates, bolts, shims, and leveling pads must be sourced separately based on the foundation design. We provide dimensional drawings and recommended bolt torque values for each product series.
All published reduction percentages (e.g., 85% resonance reduction, 70% force reduction) are based on controlled laboratory tests using modal analysis and accelerometer measurements on standard compressor mock-ups. Field performance may vary depending on foundation stiffness, adjacent equipment, and installation quality. We recommend on-site validation after commissioning.
Key benefits
High-density elastomeric dampers shift the natural frequency of compressor frames away from operating RPM, eliminating structural amplification.
Validated on reciprocating compressors in petrochemical plants.Polyurethane absorption pads convert vibrational energy into low-grade heat through internal friction, reducing transmitted force to floors and supports.
Resistant to oil and chemical exposure on industrial skids.Heavy-duty helical spring isolators, individually tuned via modal analysis, prevent resonance coupling between compressor packages and building structures.
Tested on units exceeding 10,000 lbs static load.Proprietary elastomer formulations maintain consistent damping from 5 Hz to 500 Hz, covering both low-speed and high-speed compressor families.
Applicable to screw, centrifugal, and reciprocating types.Spring isolators are encased in galvanized steel with neoprene base pads, ensuring long-term performance in humid or wash-down environments.
No galvanic corrosion observed after 18 months in coastal facilities.Polyurethane pads are available in multiple thicknesses and durometers, allowing on-site adjustment of stiffness without changing the isolator footprint.
Field-swappable in under 30 minutes per pad.