Vibration
Isolator Load, Deflection and Frequency
Understand the relationships that determine whether an isolator can reduce—or accidentally amplify—transmitted vibration.
Decision map
Connect load, deflection and frequency before choosing a mount
Begin with “Each mount carries its actual share of operating load” and keep the remaining conditions connected to the same requirement.
| Decision | Why it changes the review | Useful buyer input |
|---|---|---|
| Each mount carries its actual share of operating load | Describe how load reaches the component: magnitude, direction, distribution, repetition, shock and abnormal conditions. The review can then balance material, section, heat treatment and verification rather than selecting from one headline strength value. | operating weight |
| Static deflection relates to system natural frequency | Separate direction, magnitude, frequency and simultaneous movement. Show the installed neutral position and restraints so operating travel is not confused with installation adjustment, forced misalignment or an occasional assembly movement. | running speed/frequencies |
| Forcing frequency must be compared with natural frequency | Provide operating speeds or forcing frequencies, equipment condition and the response that must be reduced. Isolation is a system relationship between load, stiffness, deflection, frequency and connected services—not a property of the mount name alone. | running speed/frequencies |
| Transient loads can govern restraint and travel | Separate direction, magnitude, frequency and simultaneous movement. Show the installed neutral position and restraints so operating travel is not confused with installation adjustment, forced misalignment or an occasional assembly movement. | running speed/frequencies |
| Published capacities require the stated configuration | For isolator load, deflection and frequency, define “published capacities require the stated configuration” through function, interface and an observable acceptance method. Keep an unknown value visible as an open item so it can be confirmed before it becomes a manufacturing or purchasing requirement. | startup and shutdown behavior |
Requirement package
Build the point-load and operating-frequency input set
For isolator load, deflection and frequency, send confirmed values with their units and source. Mark an unknown as “to be confirmed” instead of converting it into a guessed production requirement.
A review can begin from operating weight, center of gravity or point loads, mount locations. RELIA can then separate information suitable for product-range matching from decisions that require custom production or further technical confirmation.
Buyer questions
Load and frequency questions that change isolator behavior
These answers help prepare and compare a isolator load, deflection and frequency requirement. Final ratings, dimensions and acceptance remain tied to the actual project data supplied for review.
How should weight distribution across mounting points be calculated or supplied?
For isolator load, deflection and frequency, start with the component function and the confirmed interface or operating information. Record the unresolved part of this question as an open item, then connect it to a drawing, sample, measurement or acceptance method before quotation or production. For the next review, attach or state operating weight.
Why can an incorrectly selected isolator amplify vibration?
An isolator can amplify motion when the operating or start-up frequency is near the supported system natural frequency. Incorrect load, uneven distribution, rigid bypasses and structural flexibility can shift the real system away from the assumed selection point. For the next review, attach or state running speed/frequencies.
What is static deflection and why does it matter?
Static deflection is the change in isolator height under its operating load. It indicates effective stiffness and helps estimate natural frequency, but it must be considered with load distribution, damping, motion limits and the supporting structure. For the next review, attach or state running speed/frequencies.
Review sequence
Check the isolation relationship in the correct order
This sequence allows an early discussion of isolator load, deflection and frequency without hiding missing information. It keeps confirmed inputs, quotation assumptions and remaining decisions visible to both buyer and supplier.
Define the Load & Deflection task
State what isolator load, deflection and frequency must accomplish and how it connects to the surrounding system.
Separate confirmed inputs from open items
Record operating weight, center of gravity or point loads, mount locations and clearly mark values still requiring confirmation.
Review the factors that control Load & Deflection
Connect each mount carries its actual share of operating load, static deflection relates to system natural frequency, forcing frequency must be compared with natural frequency to drawings, samples or acceptance notes.
Release one controlled Load & Deflection requirement
Carry the same approved isolator load, deflection and frequency revision and assumptions into quotation, sample review, production and inspection.
Decision boundary
What a preliminary isolation review cannot certify
This isolator load, deflection and frequency page provides a disciplined starting point, not a substitute for the buyer's design authority, applicable code or final project approval.
Use this guide to prepare the Load & Deflection review
- organize the known operating weight and center of gravity or point loads
- compare proposals using the same assumptions
- identify dimensions, duty or records still missing
- choose between product-range review and custom-production review
Final Load & Deflection approval stays with the project specification
- final size, material, rating, process or configuration
- compatibility with the complete operating and installation environment
- applicable code, end-user or design-authority approval
- order-specific sampling, testing, documents, packing and delivery terms
Factory context for this technical guide
The Load–Deflection Point Becomes the Model Approval Basis
RELIA uses the support-point load and required deflection to select and verify the proposed rubber or spring model in its own factory.
The final curve and fatigue program belong to the selected model and load case. They are not transferred to a visually similar mount or to another machine without a separate review.
Project-specific review
Send the information available for isolator load, deflection and frequency.
RELIA can organize operating weight and center of gravity or point loads, return a list of open items, and review whether the request should proceed through an available product range or custom production.
For a isolator load, deflection and frequency inquiry, applicable ISO 9001, ISO 14001 and other supplier-qualification documents can be discussed and current copies provided on request. These management-system records do not replace order-specific product acceptance.
