Decision 1
Define the assembly
Specify topology, segment layout, magnetization directions, datums, and working gap in a controlled drawing or CAD package.
Manufacturer selection · RFQ preparation
China Halbach Array Manufacturer
Prepare a project-specific RFQ, check what a manufacturer can substantiate, and agree on acceptance before committing to a custom array.
Lead time, unit cost, and achievable field performance depend on the released design and supplier process. This page prepares the review; it does not promise a generic estimate.
Build a manufacturer-ready RFQ checklist
Choose the project conditions to see which details to include in your request for quotation. The checklist updates locally.
If undecided, state the operating conditions and ask for a material recommendation.
Your quote preparation checklist
Linear array · Not decided · need help defining acceptance · prototype / first article
8 RFQ details ready to review
Use this project-specific checklist to request comparable manufacturer evidence and a written quote.
- 1Attach a dimensioned drawing or CAD model. Mark segment count, magnetization direction, datums, working gap, and assembly interfaces.
- 2State the application and operating envelope: continuous and peak temperature, speed or cycle rate, vibration, environment, and destination market.
- 3Ask the supplier to identify the contracting factory and which steps are performed there versus outsourced, including magnet production, array assembly, and inspection.
- 4Request a quote that separates material, machining or coating, tooling, assembly, inspection, packaging, and shipping; ask it to list assumptions and exclusions.
- 5For a linear array, include active length, pole pitch, working gap, mounting datums, and the required straightness or joint alignment.
- 6Ask the engineer to recommend a material only after reviewing temperature, corrosion exposure, field target, geometry, and cost constraints.
- 7Ask for a proposed first-article plan that separates dimensional checks from magnetic-field acceptance; approve the limits before production.
- 8Ask for a first-article schedule with material, tooling, assembly, and inspection milestones, plus the prototype cost assumptions.
This tool prepares an RFQ; it does not calculate feasibility, unit price, or delivery time. Those require a drawing, material review, and a supplier-specific quotation.
Request a drawing and DFM review
Send a drawing or CAD file with your target application and operating conditions.
Three decisions to settle before comparing quotes
A useful comparison starts with the same design inputs and acceptance criteria for every manufacturer.
Decision 2
Define acceptance
State whether acceptance covers dimensions, magnetic properties, or an assembled field map, including the method and pass limits.
Decision 3
Verify the factory
Ask which site performs each operation and request records tied to the same process and inspection plan as your order.
What to verify in a China Halbach array manufacturer
Ask for evidence tied to your part, the factory site, and the agreed inspection plan. A brochure or a generic capability claim is not enough to compare suppliers.
| Checkpoint | Ask the manufacturer | Request evidence | Why it matters |
|---|---|---|---|
| Manufacturing scope | Identify the legal manufacturer and the factory site for magnet production, machining, magnetization, array assembly, and final inspection. | A process flow, site address, and a clear list of in-house and outsourced operations. | Confirms who owns each process and where changes or quality issues must be handled. |
| Design review | Request a DFM review of segment geometry, magnetization directions, tolerances, assembly access, and the proposed fixture. | Marked-up drawing or review record with assumptions, unresolved inputs, and revision identifiers. | Shows whether the supplier has reviewed your actual design instead of quoting from a generic description. |
| Material and operating limits | Confirm the exact material grade, coating, magnetization direction, temperature range, and environmental conditions for the application. | Material specification or lot record, plus written confirmation of the limits used in the supplier review. | Makes the material choice traceable to the operating envelope; a family name alone is not a complete specification. |
| Assembly and inspection | Agree how the array will be fixtured and handled, which characteristics will be inspected, and how field measurements will be made if required. | First-article plan, measurement setup, calibration evidence, sample size, and an example inspection report. | Lets both sides agree on the acceptance method before production and avoid disputes over an undefined result. |
| Commercial and schedule | Separate prototype, tooling, recurring unit, inspection, packaging, and shipping costs; request a dated schedule against a frozen specification. | Quotation with quantity basis, validity, assumptions, exclusions, milestones, and the date each lead-time estimate starts. | Makes price and timing comparable across quotes without treating a generic market range as a project commitment. |
ISO 9001 is a quality-management-system standard. Treat a certificate as system evidence, check its organization and site scope, and separately agree product-specific requirements and inspection. The distinction follows the scope described by ISO.
Have a released drawing?
Ask the engineering team to review the design and acceptance criteria for a project-specific quotation.
Turn field performance into an inspection plan
If the application depends on a field at a working plane, bore, or air gap, define where and how it will be measured. State the probe orientation, measurement positions, units, calibration evidence, sample size, and pass/fail limits. Magnetic-field meters and Hall probes are available for permanent-magnet measurement, but the instrument does not set your product acceptance criteria.
Review magnetic measurement equipmentMeasurement equipment reference reviewed October 11, 2026. Select a probe and method for the geometry and field range of your part.
Risks to resolve during design review
Each risk has a concrete RFQ or first-article action so it can be handled before a production commitment.
A field target without a measurement definition
A field-strength or uniformity number is ambiguous unless the reference plane, positions, probe orientation, units, and acceptance limits are stated.
Action: Attach a measurement sketch or map and agree on the report format and pass/fail rule before the first article.
High-force assembly without a handling plan
Strong attraction and repulsion between segments can make positioning difficult and can damage brittle magnet parts or surrounding components.
Action: Ask for the fixture, assembly sequence, containment approach, and operator handling plan to be reviewed during DFM.
Material selected without the duty cycle
Temperature, corrosion exposure, speed, and demagnetizing conditions affect the suitable grade, coating, and retention design.
Action: Provide continuous and peak operating conditions and request written confirmation of the material and coating assumptions.
Apply the checklist to your sourcing stage
The evidence that matters changes as the drawing and production plan mature.
Prototype or first article
The design is still changing or the field acceptance limit is not yet fixed.
Next step: Request a DFM review, a first-article inspection plan, and separately listed fixture and engineering charges. Agree on open assumptions before ordering.
Repeat production
The drawing and acceptance criteria are released and the supplier is being asked to scale.
Next step: Ask for capacity and process-change controls, lot traceability, quantity-based pricing, and a schedule tied to material availability and specification freeze.
Replacing an existing source
A second manufacturer must reproduce the assembly or correct a known performance issue.
Next step: Share the controlled drawing and current inspection records, identify the failure or variation to correct, and compare first articles against the same acceptance plan.
Frequently asked questions
Practical answers for engineering and procurement teams.
Quoting and capability
What should I send for a useful first quote?
Send a drawing or CAD file, topology, segment count, magnetization directions, quantity, operating conditions, destination, and the dimensional or magnetic acceptance criteria. Mark unknowns so the supplier can identify assumptions instead of silently filling them in.
Can this page estimate price or delivery time?
No. A reliable price or schedule depends on the released geometry, material availability, tooling, inspection requirements, quantity, and shipping scope. The checklist prepares the inputs; request a dated, supplier-specific quotation for the actual project.
Does an ISO 9001 certificate prove a Halbach array will meet my field target?
No. ISO 9001 concerns an organization’s quality management system. Treat a certificate as one piece of system evidence, check its organization and site scope, and separately approve the product drawing, measurement method, and acceptance limits.
Engineering and inspection
Do I need a magnetic-field map for every array?
Not always. Use field measurement when the application depends on a defined field at a working plane, air gap, bore, or active region. If it is required, specify the measurement locations, probe orientation, units, limits, and report format; the instrument alone does not define acceptance.
Should I require wire EDM or a particular simulation package?
Specify functional requirements and ask the manufacturer to propose a process that can meet them. A process name or software brand does not establish capability; review the supplier’s design-specific analysis, measurement plan, and first-article evidence.
How can I check whether the quoted factory does the work?
Ask for the site address and operation-by-operation process flow, identify subcontracted steps, and request recent sample records with sensitive customer details removed. For a critical program, agree on an audit or process review before release.
Related engineering resources
China custom Halbach array sourcing checklistReview additional supplier, material, and export-screening questions.Axial Halbach array magnetic fieldExplore field behavior and geometry before setting an RFQ target.HalbachMagnet manufacturing and quality capabilitiesReview the documented manufacturing, assembly, and inspection process alongside supplier-specific evidence.
Have a drawing or an open design question?
Share your array topology, requirements, and operating conditions with the engineering team for a project-specific DFM and quotation review.
Contact engineeringSources and verification
Reviewed October 11, 2026
ISO 9001 — Quality management systemsISO describes the standard as requirements for a quality management system. The distinction between system evidence and project-specific product acceptance is an application of that scope. Reviewed October 11, 2026.Lake Shore — Gaussmeters and teslametersManufacturer documentation lists instruments and Hall probes for magnetic-field measurement, permanent-magnet quality control, and sorting. It does not prescribe acceptance limits for a particular Halbach array. Reviewed October 11, 2026.