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NdFeB ShapesOEM Factory
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China NdFeB factory focused on disc/block/bar/ring/arc/cylinder/sphere/countersunk magnets, OEM customization, and global supply.

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+8618857971991

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Block & Bar Magnets

Rectangular and square magnets maximizing magnetic volume within confined rectilinear housings.

Target Buyer:Mechanical engineers designing linear motion or mounting fixtures.
Neodymium block magnets stepped stack

Capability Highlights

  • Maximum holding force for given volume
  • Ideal for channel and track assemblies
  • Highly customizable aspect ratios

Typical Applications

  • Linear motors
  • Magnetic separators
  • Mounting systems

Engineering Focus

  • Parallelism
  • Edge chamfering to prevent chipping
  • Multi-pole magnetization feasibility

Key Evaluation Matrix

MetricTypical RangeWhy It Matters
Max LengthUp to 150mm standardDefines assembly scale

RFQ Checklist

  1. Length, Width, Thickness (L x W x T)
  2. Magnetization axis
  3. Operating temperature

Risk Controls

  • Corner chipping: Enforce standard R0.5 or C0.5 edge radii

Buyer Decision Pack for Internal Approval

Most delays on block & bar magnets sourcing happen when engineering and procurement approve different assumptions. Use this section as a shared decision pack so RFQ, sample validation, and release criteria stay synchronized.

Decision LayerRequired EvidenceApproval Output
Technical FitGeometry and tolerance feasibility against assembly stackConfirm drawing baseline and frozen revision code.
Validation PlanSample quantity, test method, and measurable pass/fail gateApprove pilot scope and escalation path for deviations.
Commercial ReleaseLead-time assumption, lot size, and destination termsLock PO terms only after technical/quality alignment.

Practical Notes for Repeat Orders

  1. Keep a revision log for every engineering change and mark whether it changes function, coating, packaging, or only dimensional tolerance.
  2. Ask suppliers to include outgoing inspection points directly in the quote stage so compliance expectations are visible early.
  3. For forecast-driven programs, align quarterly demand visibility with buffer strategy before MP rollout to reduce expedite risk.
  4. Archive sample pass evidence together with the approved RFQ sheet to speed up future model migration and reorders.

Operational Readiness Checklist Before PO Cadence

Teams usually avoid repeat-order surprises when they lock a single operational checklist before the first recurring PO cycle. This checklist should combine engineering constraints, quality evidence, and logistics assumptions in one version-controlled file.

CheckpointMinimum EvidenceWhy Buyers Care
Drawing + Revision LockActive revision code tied to accepted sample reportPrevents quote and production from diverging silently.
Acceptance Rule FreezeMeasurable pass/fail limits for critical dimensions and magnetic outputKeeps sample and MP decisions consistent across teams.
Process StabilityPilot-lot consistency records and deviation handling pathReduces launch risk caused by single-lot bias.
Logistics BaselinePackaging method, labeling fields, and shipping assumptionsImproves receiving predictability and import readiness.
Change-Control OwnershipNamed contacts, notice window, and effective-lot rulesAvoids untracked process drift during repeat supply.

Product Gallery

Neodymium bar magnets long rectangular
Neodymium bar magnets long rectangular
N52 neodymium block magnets stack
N52 neodymium block magnets stack

Buyer FAQ

Can you magnetize through the longest dimension?

Yes, but it requires specialized fixtures. Discuss during RFQ.

Related Resources

  • 1 16in long bar neodymium magnets quick check
  • RFQ Guide

Inquiry Email

[email protected]

Open email appStart inquiry

WhatsApp

+8618857971991

Open WhatsApp

Fast channel for RFQ confirmation and follow-up.