Seven families, connected to the application.
Explore all products →Share the drawing, contact conditions and acceptance criteria for your component.
Material selection guide →Explore the contact, medium and mechanism.
All applications →Share the drawing, contact conditions and acceptance criteria for your component.
Material selection guide →From an open material question to an agreed component requirement.
Explore services →Share the drawing, contact conditions and acceptance criteria for your component.
Material selection guide →Industry and sourcing guides for twelve target markets.
Explore all markets →Share the drawing, contact conditions and acceptance criteria for your component.
Material selection guide →Match the component programme, purchasing role and project responsibilities.
Explore partnerships →Share the drawing, contact conditions and acceptance criteria for your component.
Material selection guide →Corporate background, practical purchasing information and direct contact.
Explore company →Share the drawing, contact conditions and acceptance criteria for your component.
Material selection guide →Sampling and validation planning defines what a trial component must demonstrate before it can support an application or purchasing approval. Separate material identity, incoming inspection and assembly performance, then record the conditions, sample reference and acceptance criteria. A useful trial resolves a specific uncertainty and preserves the result for the next decision; receiving a sample or observing one successful operation is not the complete approval.
Start with the identity, drawing and material records associated with the proposed sample. Define the dimensional, surface or document checks needed before it enters a trial. This route is useful when a new source or revised component must first demonstrate that it represents the intended item rather than merely a similar-looking sphere.
For ball-and-seat sets or another functional pair, define the mating parts and actual operating conditions. The trial should establish the assembled result that matters, such as closure or contact marking. Keep it separate from loose-ball inspection so one successful measurement is not mistaken for complete application acceptance.
Use a controlled comparison when materials or media remain open. A finishing-media sample, for example, needs a defined workpiece and outcome. Record which variable changes and what stays fixed, so the result can distinguish the candidates instead of mixing material, equipment and preparation changes together.
A sample is most useful when its purpose is agreed before it arrives. The question might concern fit, closure, wear or a material alternative, and each needs a different evaluation. Identify which requirement remains uncertain, which conditions matter and who accepts the result. Sampling review organizes that information into a practical plan, so the trial produces a usable decision record instead of a collection of impressions.
State the decision the trial needs to support. Does the part fit the approved assembly, does a contact close under the specified conditions or does a material alternative address the observed problem? Identify the relevant drawing, material state and surface preparation, and assign the sample a clear reference. Separate preliminary comparison from final approval. An exploratory trial can identify a promising direction without establishing repeat-production acceptance. Name the required evidence and the owner of the decision before requesting quantities. Where several questions are involved, organize them into a sequence so an early identity problem does not become an expensive assembly trial. The resulting plan should explain why each sample is needed and what a useful pass, failure or inconclusive result would mean.
A trial's meaning depends on its conditions. For a fluid contact, record the medium, cleaner, temperature, mating seat and operating cycle. For a rolling element, record the track condition, lubricant and actual load path. For process media, identify the workpiece and relevant process context without assuming another machine's result applies. Include any preparation that changes the surface or material state. If several candidates are compared, hold the agreed variables consistent and document unavoidable differences. Choose observations or measurements that answer the trial question, rather than collect numbers without a decision basis. Inspection planning can identify the measurement evidence needed for the component, while the application owner defines the complete assembly or process acceptance and the conditions under which the conclusion remains valid.
Explicitly record the evaluated sample reference, drawing revision, material and preparation together with the test method, conditions and results. An approval should say what was accepted and identify the configuration it covers. A failure should describe the observation and the evidence needed to separate material, geometry and application causes. An inconclusive trial is still useful if it identifies the next question. Keep the sample record available when quantity, source, finish or mating parts change. A later order may need additional checks if those changes affect the original result. Use the accepted record to prepare the commercial and packaging handover, so the purchased item remains connected to the one that was evaluated rather than an informal description of a successful sample.
| Record item | Specify before the trial | Decision it supports |
|---|---|---|
| Trial objective | One application or purchasing question. | Why the sample is needed. |
| Sample identity | Item, drawing, material and preparation. | What was actually evaluated. |
| Mating or process context | Seat, track, workpiece or fixture. | Where the result applies. |
| Test conditions | Operating sequence and relevant environment. | Whether the trial is representative. |
| Acceptance basis | Observation, measurement and decision owner. | How the outcome will be judged. |
| Next-stage record | Result, limits and changes needing review. | Whether the project can proceed. |
Identify the unresolved requirement and the result needed before the project can proceed. Separate an exploratory material comparison from an approval trial, and name the person or program responsible for accepting the outcome and its scope.
Connect the item reference, drawing revision, material and preparation with the mating parts or process context. Agree the required records and incoming checks so the trial starts with a component that represents the intended evaluated configuration.
The application owner evaluates the identified sample under the recorded conditions and acceptance method. Preserve relevant observations and measurements, including any departure from the plan, so the result can be interpreted rather than reduced to an unexplained pass label.
Document acceptance, failure or the remaining uncertainty. Identify any changes that require renewed review and carry the evaluated item and evidence into the next enquiry, commercial handover or focused trial instead of restarting from a generic sample description.
No. Receipt establishes that a sample arrived, not that it met the application. Identify its configuration and the evaluation it must complete. A useful approval connects material, drawing and test conditions with the result and the owner responsible for accepting that specific component or assembly.
Not by itself. The result applies to the conditions and duration actually evaluated. Define the application's required acceptance and the evidence needed to support it. A brief observation can answer an initial question while leaving wear, environmental or repeatability requirements for a further agreed evaluation.
Incoming checks establish whether the sample represents the specified part. A functional trial evaluates the assembly or process result. Keeping them distinct helps identify the cause of a problem and avoids treating dimensional conformity as proof of closure, motion or another complete application outcome.
Use a common objective and consistent conditions, and record the exact grades, preparation and mating parts. Change the variables the comparison is intended to assess. If other conditions differ, identify them explicitly so the outcome does not attribute every observed difference to the material alone.
Record the observation, configuration and conditions before choosing a corrective action. Determine which evidence can distinguish a material issue from geometry, preparation or the surrounding application. A documented failure can narrow the problem and define a better next trial rather than prompt an unstructured substitution.
No automatic extension should be assumed. Identify the change and determine whether it affects the evidence behind acceptance. The application owner defines the required review. Preserve the original sample record so the decision compares a concrete configuration rather than relying on a familiar product name.
Share the component, evaluation objective and intended conditions before planning the trial.