Rotor & Stator Lamination Stacks

Name: Rotor & Stator Lamination Stacks
Brand: Magnet-Free Motor
Availability: PreOrder

Precision electrical steel stamping, interlock, bonding, stacking, and inspection support for rotor and stator cores.

Target Buyer:Best for motor designers and sourcing teams that need traceable electrical steel cores for rare-earth-free architectures.

Engineering Assets

Request reference specifications and STEP models without a registration gate. We confirm the correct package after a quick project-fit check.

Request Datasheet Request STEP Model

Silicon steel stator lamination stack for precision motor core manufacturing

Capability Highlights

Silicon steel lamination stamping for rotor and stator cores
Prototype tooling, progressive die planning, and repeat-production transfer
Rotor and stator stack assembly by interlock, welding, bonding, or fixture route
Stack height, burr, coating damage, runout, and concentricity inspection records
Electrical steel grade and coating traceability by lot and drawing revision
Core-loss and dimensional evidence planning for high-efficiency motor programs

Typical Applications

SynRM rotor barriers and flux-barrier lamination stacks
SRM stator and rotor cores with controlled pole geometry
EV traction stator cores for hairpin or round-wire windings
EESM and WRSM rotor/stator core packages
Prototype motor core tooling before production die investment

Engineering Focus

Electrical steel grade, coating, and lamination thickness
Burr height, flatness, concentricity, and stacking factor
Tooling change control from prototype to production
Core loss and dimensional inspection plan
Stacking method selection: interlock, weld, adhesive bond, or fixture compression
Drawing revision, steel lot, coating, and inspection record traceability

Key Evaluation Matrix

Metric	Typical Range	Why It Matters
Lamination Thickness	0.20-0.50 mm electrical steel	Controls iron loss, heat generation, and high-speed efficiency in magnet-free motors.
Material Grade	NOES or project-specified silicon steel	Steel grade, coating, and lot traceability determine loss, heat, and buyer audit confidence.
Burr and Coating Control	Drawing-defined burr, flatness, and coating limits	Burr and coating damage can reduce insulation between laminations and increase core loss.
Stacking Method	Interlock / weld / bond / fixture route	Stack integrity, loss behavior, and manufacturability depend on the joining route.
Tooling Stage	Prototype die / soft tooling / progressive die	Separates fast validation samples from production-ready cost and repeatability assumptions.

Production and Validation Flow

Process Step	Buyer Evidence	Acceptance Gate
Drawing and material review	DXF/STEP gap list, electrical steel grade review, coating requirement, and tolerance-risk notes.	Material, thickness, coating, stacking method, and inspection plan are frozen for quote.
Prototype stamping and burr control	First-article dimensions, burr measurement, coating inspection, flatness, and sample photos.	First articles meet drawing-critical dimensions and agreed burr/coating limits.
Stack assembly and dimensional inspection	Stack height, skew or alignment, concentricity, runout, fixture route, and outgoing inspection records.	Finished stack meets airgap, winding, shaft, and housing interface requirements.
Pilot and lot traceability	Steel certificate, lot number, die revision, inspection report, packaging record, and change log.	Buyer can trace each delivered stack to material lot, drawing revision, and inspection record.

RFQ Checklist

Lamination DXF/STEP, material grade, and thickness
Target stack height, stacking method, and tolerance plan
Annual volume, prototype quantity, and tooling ownership terms
Inspection report format and core loss test expectations
Burr limit, coating damage limit, flatness, concentricity, and runout requirements
Prototype tooling route, production die expectation, and drawing revision control
Packaging standard for loose laminations, bonded stacks, or finished cores

Risk Controls

Tooling drift or material substitution: Tie drawings, steel grade certificates, and dimensional inspection records to each lot.
Core loss higher than model: Agree steel grade, thickness, coating, stamping stress, annealing expectation, and test evidence before tooling.
Burr damages winding insulation: Define burr height, deburring process, coating inspection, and slot-edge acceptance limits before pilot build.
Prototype stack cannot transfer to progressive die: Review bridge width, slot geometry, carrier strip, tooling ownership, and change-control plan before production release.

Product Gallery

Precision stamped rotor lamination plate for magnet-free motor cores

Electrical steel lamination stack sample for motor core production

Buyer FAQ

Can you support prototype lamination tooling?

Yes. We can review prototype stamping, stack assembly, and transition plans for repeat production.

What files should be sent for a lamination quote?

Send DXF, STEP, material grade, thickness, coating requirement, stack height, tolerance plan, stacking method, volume, and inspection expectations.

Can you deliver loose laminations or finished stacks?

Both routes can be reviewed. The best scope depends on stacking method, core-loss expectations, shipping risk, and how much final assembly the buyer wants to control.

Which inspection records are most useful?

Typical records include material certificate, first-article dimensions, burr height, flatness, concentricity, runout, stack height, coating check, and outgoing packing photos.

Related Resources

Inquiry Email

[email protected]

Email app

Include target torque/speed, quantity, and delivery location.

Instant Chat

+86 18857971991

Chat on WhatsApp

Direct response from our engineering team.

Capability Highlights

Silicon steel lamination stamping for rotor and stator cores

Prototype tooling, progressive die planning, and repeat-production transfer

Rotor and stator stack assembly by interlock, welding, bonding, or fixture route

Stack height, burr, coating damage, runout, and concentricity inspection records

Electrical steel grade and coating traceability by lot and drawing revision

Core-loss and dimensional evidence planning for high-efficiency motor programs

Engineering Focus

Electrical steel grade, coating, and lamination thickness

Burr height, flatness, concentricity, and stacking factor

Tooling change control from prototype to production

Core loss and dimensional inspection plan

Stacking method selection: interlock, weld, adhesive bond, or fixture compression

Drawing revision, steel lot, coating, and inspection record traceability

Key Evaluation Matrix

Metric	Typical Range	Why It Matters
Lamination Thickness	0.20-0.50 mm electrical steel	Controls iron loss, heat generation, and high-speed efficiency in magnet-free motors.
Material Grade	NOES or project-specified silicon steel	Steel grade, coating, and lot traceability determine loss, heat, and buyer audit confidence.
Burr and Coating Control	Drawing-defined burr, flatness, and coating limits	Burr and coating damage can reduce insulation between laminations and increase core loss.
Stacking Method	Interlock / weld / bond / fixture route	Stack integrity, loss behavior, and manufacturability depend on the joining route.
Tooling Stage	Prototype die / soft tooling / progressive die	Separates fast validation samples from production-ready cost and repeatability assumptions.

Production and Validation Flow

Process Step	Buyer Evidence	Acceptance Gate
Drawing and material review	DXF/STEP gap list, electrical steel grade review, coating requirement, and tolerance-risk notes.	Material, thickness, coating, stacking method, and inspection plan are frozen for quote.
Prototype stamping and burr control	First-article dimensions, burr measurement, coating inspection, flatness, and sample photos.	First articles meet drawing-critical dimensions and agreed burr/coating limits.
Stack assembly and dimensional inspection	Stack height, skew or alignment, concentricity, runout, fixture route, and outgoing inspection records.	Finished stack meets airgap, winding, shaft, and housing interface requirements.
Pilot and lot traceability	Steel certificate, lot number, die revision, inspection report, packaging record, and change log.	Buyer can trace each delivered stack to material lot, drawing revision, and inspection record.

RFQ Checklist

Lamination DXF/STEP, material grade, and thickness

Target stack height, stacking method, and tolerance plan

Annual volume, prototype quantity, and tooling ownership terms

Inspection report format and core loss test expectations

Burr limit, coating damage limit, flatness, concentricity, and runout requirements

Prototype tooling route, production die expectation, and drawing revision control

Packaging standard for loose laminations, bonded stacks, or finished cores

Risk Controls

Tooling drift or material substitution: Tie drawings, steel grade certificates, and dimensional inspection records to each lot.

Core loss higher than model: Agree steel grade, thickness, coating, stamping stress, annealing expectation, and test evidence before tooling.

Burr damages winding insulation: Define burr height, deburring process, coating inspection, and slot-edge acceptance limits before pilot build.

Prototype stack cannot transfer to progressive die: Review bridge width, slot geometry, carrier strip, tooling ownership, and change-control plan before production release.

Buyer FAQ

Can you support prototype lamination tooling?

Yes. We can review prototype stamping, stack assembly, and transition plans for repeat production.

What files should be sent for a lamination quote?

Send DXF, STEP, material grade, thickness, coating requirement, stack height, tolerance plan, stacking method, volume, and inspection expectations.

Can you deliver loose laminations or finished stacks?

Both routes can be reviewed. The best scope depends on stacking method, core-loss expectations, shipping risk, and how much final assembly the buyer wants to control.

Which inspection records are most useful?

Typical records include material certificate, first-article dimensions, burr height, flatness, concentricity, runout, stack height, coating check, and outgoing packing photos.