Buyer Decision Inputs
- 2D/3D drawings, BOM, material callouts, and critical tolerances
- Magnet grade, coating, magnetization direction, and retention method
- Winding specification, resistance target, insulation class, and lead-out design
Build-to-print and co-engineered AFPM stator, rotor disk, magnet carrier, and housing assemblies for motor companies that keep electromagnetic design in house.
| Metric | Typical Range | Why It Matters |
|---|---|---|
| Rotor flatness | Drawing-defined | Rotor flatness and concentricity directly influence airgap stability and acoustic behavior. |
| Electrical inspection | Resistance, hipot, phase balance | Subassemblies must be screened before they enter expensive final motor integration. |
| Traceability | Lot-based records | AFPM programs often iterate quickly, so revision and lot control prevent ambiguous test results. |
The following physical and electrical parameters define the baseline envelope for this product family. Final values are governed by the specific winding and cooling configuration chosen during the RFQ process.
| Parameter | Planning Range | Notes |
|---|---|---|
| Torque (Continuous / Peak) | Project-specific after duty-cycle and cooling review | Peak limits depend on inverter phase current; continuous depends on thermal path. |
| Motor Constant (KV) | Winding dependent target set during electrical review | Adjusted via turn count to match target bus voltage and speed. |
| Electrical Interface | DC bus voltage, phase current, pole pairs, resistance, and inductance set per winding | Needed to match inverter limits, back EMF margin, and controller tuning. |
| Physical Dimensions | Project-specific OD, axial length, shaft, and flange envelope | Scalable by stator segmentation and single vs. dual-rotor topology. |
| Feedback / Brake Options | Hall sensors, encoder, resolver, temperature sensors, or holding brake review | Selected against control loop bandwidth, safety behavior, and integration space. |
| Cooling Methods | Natural Air, Forced Air, Liquid Jacket, Oil | Selection determines continuous power rating and environmental sealing. |
| Mass / Rotor Inertia | Project-specific after rotor disk, magnet carrier, shaft, and housing freeze | Required for acceleration estimates, balancing scope, and mechanical safety review. |
| IP Rating | Project-specific IP target after housing and seal review | Air-cooled and liquid or oil-cooled packages require different sealing validation. |
Use these checkpoints to turn a product-family discussion into a controlled sample and pilot-lot plan. The exact record set depends on the drawing, winding, rotor, cooling, and acceptance scope.
| Stage | Control Point | Buyer Evidence |
|---|---|---|
| RFQ freeze | 2D/3D drawings, BOM, material callouts, and critical tolerances; Magnet grade, coating, magnetization direction, and retention method | Revisioned RFQ, package envelope, torque-speed target, and CTQ list. |
| Manufacturing prep | Drawing-controlled machining tolerances for rotor disk flatness and concentricity; Magnet adhesive compatibility, surface preparation, and retention margin | Material route, winding target, rotor or magnet retention method, and fixture plan. |
| Sample validation | Rotor flatness, Electrical inspection | Resistance, hipot, no-load/back EMF, runout, balance, torque-speed, or thermal records as applicable. |
| Pilot handoff | Small geometry changes invalidate test data; Magnet coating or adhesive mismatch | Lot traceability, change record, packaging approval, and outgoing inspection rhythm. |
Baseline parameter matrices, STEP files, and PDF datasheets may be shared after RFQ context is confirmed. Torque-speed maps and back EMF charts depend on the selected winding, cooling path, and validation scope.
Yes. Many buyers start with stator-only, rotor-only, or magnet carrier subassemblies before moving to full motor supply.
Yes. We can work from buyer-owned drawings under NDA and quote against defined CTQ and inspection requirements.
Inquiry Email
Please include application, peak/continuous torque, speed range, voltage/current limit, outer diameter, axial length, cooling method, quantity, and drawings or reference samples.
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+86 188 5797 1991
Share torque-speed, package, cooling, and sample quantity in the first message.