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PRODUCT SHAPE / RING MAGNETS

Custom Neodymium Ring Magnets for Drawing-Led Projects

A ring magnet route focused on outside diameter, bore, thickness, magnetization and the assembly conditions around the bore.

Drawing-led review preferred. A clear written requirement can start the discussion when a drawing is not ready.

Finished sintered NdFeB ring magnets in several sizes
RING PRODUCT / BORE, FACE AND FINISH VARIATION

ENGINEERING SNAPSHOTKeep the requirement visible from review to release.

01GeometryOD, ID and thickness
Bore fit and reference faces
02MaterialSintered NdFeB
N25 to N52 stated range
03FinishNickel, zinc, epoxy
Phosphating can be considered
04InputPDF, STEP or STP
Drawing preferred for review

01 / GEOMETRY AND DRAWING INPUTS

Define the ring around the bore.

The outside diameter, inside diameter and thickness establish the envelope. The drawing should also show the bore fit, reference faces, edge condition and any concentricity requirement.

Finished magnet forms used to discuss ring geometry
GEOMETRY REFERENCE / BORE AND FINISHED FACES
01

Outside and inside diameter

State the dimensions that control the assembly fit.

02

Thickness and axial length

Keep the axial direction connected to magnetization.

03

Fit and concentricity

Call out runout, clearance or concentricity where it matters.

04

Polarity

Mark the required direction and reference face on the drawing.

02 / MATERIAL AND FINISH

Specify grade and coating with the bore.

Material, coating and dimensional allowance need to work together. Final selection follows the approved drawing and project specification.

Grade rangeN25 to N52Stated range, project dependent
Product dimensions1 to 250 mmProduct-related reference range
Typical tolerance±0.1 mmRoute-dependent review
CoatingNickel, zinc, epoxyPhosphating can be considered

03 / PROCUREMENT AND INSPECTION

Keep the release basis beside the part.

The RFQ should carry the application, environment, magnetic target, pole orientation, coating, quantity and annual usage. Samples, MOQ and lead time are confirmed for the project.

Dimensional inspection equipment used for magnet part review
INSPECTION BASIS / OD, ID, THICKNESS AND FIT
01

Dimensional

OD, ID, thickness and other assembly-critical dimensions.

02

Magnetic

Grade and magnetization direction reviewed against the requirement.

03

Surface and coating

Finish and condition remain part of release.

04

Traceability

Quality records can be included in the quotation basis.

04 / ENGINEERING HANDOFF

Review the ring before quotation.

Share OD, ID, thickness, magnetization and the assembly context already known. ASTROMAGNET reviews the drawing or written requirement before confirming the technical and commercial basis.

01

Drawing

PDF, STEP or STP file with the latest revision.

02

Application

Assembly position, environment and magnetic function.

03

Release

Quantity, coating and inspection expectations.

RING MAGNET / REVIEW BASIS

Start with the complete ring.

A clear bore requirement gives the engineering review a useful starting point.

Discuss the Ring Magnet
GEOMETRY + MATERIAL Start with the complete ring. OD / ID / thickness / inspection context