For motor manufacturers

Universal motor stator & rotor cores

Source the form your production line needs: individual laminations, finished laminated cores, or a matched stator–rotor set built around your drawing.

  • Stator components
  • Rotor components
  • Drawing-led production
Example universal motor stator and rotor laminated cores from MinfaiHistorical Minfai product example · final geometry follows the approved drawing

Two supply formsIndividual laminations or finished laminated cores
Matched componentsStator and rotor reviewed together where needed
Project-specificDimensions and construction confirmed from your drawing

SUPPLY OPTIONS

Choose the component your motor line needs

The same motor program may require loose stamped parts, assembled laminated cores, or both. We define the supply scope before tooling and sample approval.

01 / LAMINATIONS

Individual stator & rotor laminations

Stamped profiles supplied for your own stacking or downstream assembly process.

02 / FINISHED CORES

Finished laminated stator & rotor cores

Stacked cores supplied to the construction and inspection requirements agreed for the project.

03 / MATCHED SETS

Coordinated stator–rotor components

Review mating dimensions and sample criteria together for a more complete motor program.

WORKING WITH MINFAI

Support built around your motor project

Six areas of support, from profile selection to samples and delivery.

01

Practical sourcing

Review material, tooling and volume together for your project.

02

Multiple profiles

Assess stator and rotor profiles against the motor design.

03

Drawing-led customization

Define dimensions and supply form around your drawing.

04

Motor-component focus

Focus production discussions on laminations, stacked cores and matched parts.

05

Direct manufacturer contact

Discuss samples, technical requirements and production directly.

06

Project support

Follow up on sample feedback, packing and delivery needs.

TECHNICAL REVIEW

Specify what matters to your design

Send your drawing and the details below for a reliable quotation. Dimensions and core construction are confirmed for each motor program.

Geometry
Stator and rotor profile, outside and inside diameters, slots, shaft fit and critical tolerances.
Material
Specified grade, lamination thickness, insulation or coating requirements where applicable.
Core construction
Loose laminations or finished cores, required stack height and construction method.
Acceptance
Sample approval, critical inspection points, packing and documentation requirements.
Program scope
Estimated quantities, tooling status and target delivery timing.
Product photographs are examples. Current tooling, availability, pricing and final specifications are confirmed through quotation and approved samples.
Explore precision stamping & tooling →
Second historical example of a universal motor stator and rotor core set
Example of a laminated core set. Image illustrates product form, not a guaranteed current size or configuration.

MANUFACTURING PROCESS

From coil loading to dispatch

Follow the production stages from material loading to inspection and delivery. Historical factory photographs illustrate the process; the route is agreed for each project.

Coil loading
01Coil loading
Material feeding
02Material feeding
Die setup
03Die setup
Stamping
04Stamping
Hydraulic sizing
05Hydraulic sizing
Formed cores
06Formed cores
Stack-height inspection
07Stack-height inspection
Packing & storage
08Packing & storage
Dispatch
09Dispatch

QUALITY INSPECTION

Checks from incoming material to finished cores

Inspection examples cover material properties, core construction and mating dimensions. Applicable checks, methods and tolerances are agreed during drawing and sample review.

Strip thickness
01Strip thickness
Strip width
02Strip width
Core loss
03Core loss
Material hardness
04Material hardness
Perpendicularity
05Perpendicularity
Core stack height
06Core stack height
Stator hole spacing
07Stator hole spacing
Stator bore
08Stator bore
Critical dimensions
09Critical dimensions
Rotor concentricity
10Rotor concentricity
Rotor outside diameter
11Rotor outside diameter
Rotor shaft bore
12Rotor shaft bore
Rotor balance
13Rotor balance

MANUFACTURING SUPPORT

Connect each requirement to the production process

Material, component detail and factory communication are three priorities in a project review.

Material & production planning
01

Material & production planning

Align the specified material, lamination profile and tooling before production.

Attention to core details
02

Attention to core details

Review stack construction, mating dimensions and inspection requirements through samples.

Work directly with the manufacturer
03

Work directly with the manufacturer

Connect technical discussions, sample evaluation and delivery planning.

PROJECT PATH

From your drawing to a production-ready part

A clear review sequence helps both teams align the product before volume supply.

Send requirements

Share the motor application, drawing status, supply form, estimated quantity and timing.

Review feasibility

Confirm geometry, material, tooling and any open technical or commercial points.

Approve samples

Assess agreed samples and inspection criteria before production.

Produce & deliver

Manufacture to the approved scope and coordinate packaging and delivery.

Factory photograph from the original Minfai website

ABOUT MINFAI

Components for motor manufacturers

Based in Shenzhen, Shenzhen Minfai Metal Electric Co., Ltd. focuses on stator and rotor laminations, laminated cores and associated metal components. Customer drawings guide discussions on tooling, samples and supply requirements.

More about Minfai →

FREQUENT QUESTIONS

Answers before you enquire

Can Minfai supply both loose laminations and finished cores?

Yes. Tell us which supply form you need for the stator, rotor or matched set so we can assess the relevant construction and inspection requirements.

Can you manufacture to our own motor drawing?

Yes. The drawing and application requirements are the starting point for technical review, tooling discussion and sample approval.

Do you offer standard sizes?

We can assess a requested size, including one found in an earlier catalog. Current tooling and availability are confirmed from your drawing, material and target quantity.

What should we include in the first enquiry?

Part type, supply form, drawing status, material, estimated annual or batch volume and target timing. We can arrange an appropriate way to exchange confidential drawings after initial contact.

Universal motor stator and rotor cores

Universal motor projects combine a field stator with a rotating armature. For component procurement, the stator profile, rotor slots, shaft bore and stack length need to be reviewed together. A familiar outside shape alone does not establish compatibility with an existing motor.

Minfai’s historical universal motor photographs help identify component forms. For a current order, provide the drawing revision and specify whether you require loose stator laminations, loose rotor laminations, finished stacks or a matched core set. Describe any shaft, commutator, winding or mounting interfaces that affect the core drawing; the quotation should identify the exact components included.

Drawing and purchasing review points

Requirement Information to include
Stator drawing Pole profile, winding space, mounting holes and the reference used to check the inside profile.
Rotor drawing Slot shape, outside diameter, shaft bore, stack length and features that affect subsequent armature assembly.
Supply form Identify loose laminations or finished stacks for each part and the required pairing or batch identification.
Historical references A photograph or old model code is useful for discussion; current dimensions and tooling suitability are checked against a readable drawing.

Questions before component procurement

Can I order only the stator or only the rotor core?

Yes. State the individual component and supply form in your inquiry. A matched set can also be discussed when both drawings, quantities and acceptance requirements are available.

How should I use a model shown in the old catalog?

Include the old reference alongside a current drawing or clearly identified sample. Material, dimensions, tooling status and order scope still need review before production is quoted.

Ready to discuss your universal motor core?

Tell us whether you need laminations, finished cores or both. We will help define the next technical step.

Start your enquiry →