A starting point for parts that need PEEK’s heat resistance, chemical resistance and mechanical performance without added reinforcement. Specify the actual stock grade, rather than only “natural PEEK.” [1]
Glass reinforcement can improve stiffness and resistance to creep. It can also wear a mating surface, so a structural support and a sliding bearing should not receive the same material decision. [2]
Carbon-fiber reinforcement changes stiffness, thermal behavior and electrical properties. Carry the exact formulation into the drawing review; it is not interchangeable with unfilled PEEK. [3]
Wear-modified formulations are developed for sliding applications. A blend containing PTFE, graphite and carbon fiber is different from a grade reinforced only for stiffness. [4]
These are formulation families, not a stock list or a claim that different manufacturers’ grades are equivalent. Material source, availability and suitability are confirmed for each order.
Define the bore, outside diameter and mating shaft together. For sliding duty, include the load, speed, lubrication and acceptable wear, not only the room-temperature fit.
Mark locating holes, supported faces and load direction. A guide that sees rubbing contact needs different review points from a block used only for positioning.
Identify the electrical requirement, contact points and mechanical loading. Do not substitute a reinforced or wear-modified grade without reviewing its electrical properties.
Specify port locations, thread forms, sealing faces and the fluid involved. Define any leak test and its acceptance conditions before treating the component as ready for service.
Show how the fixture is supported and which surfaces locate the mating part. Include thermal cycles and any limits on contact marks, burrs or cleaning residues.
Call out thin walls, pocket floors and fastener locations. Share the mating component or assembly drawing where stiffness and alignment are part of the requirement.
| Part requirement | Information to provide | Decision before production |
|---|---|---|
| Heat and thermal cycling | Working temperature range, duration at temperature, cycling and applied load. | A temperature rating is not a finished-part fit or load rating. Review the supplier data for the exact grade and the assembled condition. [1] |
| Sliding and wear | Contact pressure, speed, lubricant, mating material and its surface finish. | Compare a wear formulation with the actual contact conditions. Glass reinforcement is not automatically a better bearing choice. [2] [4] |
| Electrical insulation | Required resistance or dielectric performance, geometry, test method and environment. | The filler package matters. Verify the chosen grade rather than extending unfilled PEEK data to carbon-filled material. [3] |
| Chemicals and cleaning | Fluid names, concentrations, exposure temperature and cleaning cycles. | Check the full service environment against the specified formulation. “Chemical resistant” is not approval for every fluid or concentration. |
| Controlled applications | Approved material designation, stock source, cleanliness and required records. | Agree documentary evidence and acceptance requirements before purchasing stock; a polymer name alone is not a product approval. |
Send a 3D model with a dimensioned drawing for pocket depths, internal corners and positional requirements. The review should identify how the blank will be supported and which faces need to remain undisturbed through the setup.
For a turned part, identify the dimensions that function together: a bore and shaft, a shoulder and stop face, or a groove and mating seal. Include the assembly temperature and whether the fit is assessed before or after installation.
Filled and unfilled PEEK do not respond identically during cutting. Heat, tool condition and support of the workpiece affect edges and dimensional stability. These are process-planning questions, not reasons to reuse a metal-machining program unchanged. [5]
Residual stresses can redistribute when material is removed. Ask whether the supplied rod, plate or tube has been stress relieved, and whether the proposed geometry needs an intermediate stabilization step. [6]
Where stress relief is needed, its position in the process and the final inspection condition should be agreed before production. There is no single annealing schedule on this page: the actual formulation, section thickness and supplier guidance govern that decision. [6]
| Feature | Put on the drawing | Agree for inspection |
|---|---|---|
| Bores and outside diameters | Size limits, mating part, clearance or interference, and acceptance temperature. | Agree the measuring method and whether the fit is verified free-state or assembled. |
| Flatness and parallel faces | Datum surfaces, wall section, support condition and any permitted clamping. | Inspect without forcing a flexible part into shape; record the agreed support arrangement. |
| Threads and fastener holes | Thread designation, engagement, insert requirement and assembly loading. | Define the thread check and any assembly trial separately from the hole’s position. |
| Sealing and sliding surfaces | Finish requirement, measurement locations, edge condition and mating surface. | Identify which faces require recorded checks and whether a sample trial is needed. |
| Positions and multi-face geometry | Datum system, feature relationships and released drawing revision. | Choose an inspection plan that checks the functional relationships, not just individual sizes. |
No blanket tolerance is promised for every PEEK part. Share the actual dimensions, geometry, formulation and service conditions so the process and inspection scope can be reviewed together.
Identify the surfaces that can be held during machining. On slender or uneven sections, discuss the order of material removal and whether a prototype is needed before the design is released for a batch.
For press fits, threaded connections and seals, share the mating material and assembly method. The drawing should show where the part is allowed to move and where alignment or contact must be maintained.
Use the drawing to identify acceptable tool marks and surfaces that need a specific finish. Appearance should be reviewed separately from functional roughness.
Name the edges that need a break and the passages that must be clear of burrs. Do not round a sealing edge or locating feature without agreement.
Identify the face, target finish and measurement direction. Agree any additional finishing operation on the exact formulation and geometry.
Specify permitted cleaning agents, cleanliness expectations and marking locations. Any additional coating or treatment needs its own compatibility and acceptance review.
Request the supplier designation, filler content, stock form and lot identification needed for your order. Any proposed substitution should be raised for approval before material is purchased or cut.
List the dimensions that need recorded results, the datum arrangement and the inspection condition. Where a report is required, agree its format and sampling scope rather than assuming every order uses the same document.
For a first order, discuss a sample review that includes the part, the requested records and any agreed assembly checks. Special tests or declarations should be quoted explicitly, not implied by a material description.
Quote the specified formulation and the blank size required by the geometry. A change to the supplier, filler package or stock form needs review; it should not be made just to reach a lower price.
Deep pockets, multiple orientations, thin sections and stock left for finishing all affect the machining route. Share both sample and repeat quantities so setup work can be considered in the right context.
Include the surfaces needing extra finishing, recorded dimensions, cleanliness expectations and any sample approval. A comparable quotation needs the same grade, scope and evidence on each supplier’s offer.
Send matching CAD and drawing files, the PEEK specification and quantities. Identify requirements that are still open for engineering discussion.
Agree the production source, machining route, inspection plan and any stabilization or finishing work before the sample is made.
Check the sample against the agreed criteria. Record approved changes in the controlled drawing instead of relying only on email comments.
For a reorder, confirm the revision, material source, quantity and records. Bring any proposed process or supply change back for approval.
Selections are included with your inquiry. Nothing is sent until a live submission endpoint is connected and you submit the inquiry.
I have spent ten years in the CNC industry, following my father’s generation into manufacturing. Our family business grew through exhibitions and long-standing customer relationships. I want online conversations to make it easier for you to understand who is making your parts and how the work will be checked.
Meet Kevin and vetcncWe have multiple factories in China. Where a requirement does not fit our own production, I can discuss coordinating with a partner or introducing you directly. For your PEEK inquiry, we will first review the material, process and inspection needs, then agree who is responsible for the work.
Share the model together with a dimensioned drawing, exact PEEK specification and quantities. The model describes the shape; the drawing needs to identify the dimensions, surfaces and records used to accept the part.
Begin with the application requirements and any approved material list. Unfilled, glass-filled, carbon-filled and wear-modified PEEK are different formulation families. We can discuss the machining implications, but the final material selection needs approval for your design and service conditions.
Not automatically. Glass reinforcement can help stiffness, while exposed fibers can increase wear of the mating surface. Provide the shaft material, contact load, speed and lubrication before selecting a bearing formulation. [2]
Do not assume that it has the same electrical behavior as unfilled PEEK. State the insulation or resistance requirement and check the exact grade’s data and test conditions. No material is automatically substituted when you select a grade in the brief. [3]
Send the actual feature sizes, wall sections, datum system and formulation. A tolerance needs to be reviewed together with the process, inspection temperature and support condition. The quotation should confirm which dimensions and reports are included.
No. Stock history, the amount of material removed, geometry and dimensional stability requirements guide that decision. Where annealing or another stabilization step is needed, agree its position in the process and how final dimensions are accepted. [6]
A supplier’s test result or service-temperature guide does not by itself establish the allowable load, life or fit of your component. Provide the continuous and intermittent temperatures, duration, cycling and mechanical load for application review. [1]
Include the sample quantity and expected batch quantity in the inquiry. Agree the sample’s material, inspection scope and approval criteria so any design or process changes can be recorded before the production revision is released.
Specify which records you need with the RFQ. Material identification, lot traceability, dimensions and special tests are separate requirements; their availability, scope and format should be confirmed in the quotation.
Use the approved material and evidence requirements for your project. Name the exact grade, stock source, end use and required declarations. This page does not claim medical, food-contact or other application approval for unspecified stock.
Keep the approved drawing revision, material specification, finish and acceptance records together. On a repeat order, confirm the current quantities and whether any material-source or process changes need your approval.
Yes. Kevin can discuss direct production, coordination with a suitable partner or a direct introduction. The production source, responsibility for inspection, commercial arrangement and permitted sharing of your files should be clear before the project proceeds.
Agree confidentiality and the transfer method before sharing sensitive or restricted files.
Technical background comes from the material manufacturers below. Their product data is not a certification of vetcnc parts, a statement of stock availability or an endorsement of vetcnc. Use the current documentation for the exact stock grade and application.
Unfilled PEEK: grade-specific properties and thermal data.
Glass reinforcement, stiffness and mating-surface considerations.
Carbon reinforcement and grade-specific mechanical, thermal and electrical data.
An example of a wear-modified formulation; not a universal definition of every bearing-grade PEEK.
Tooling, thermal control, support and material-specific machining considerations.
Stress redistribution and case-specific stabilization planning.
Additional manufacturer background on unfilled, reinforced and bearing formulations.