| Scope freeze | Target application, performance goal, CAD or sketches, and design maturity; Critical unknowns: thermal, mass, torque ripple, speed, or cost target | Quotation boundary, drawing revision, CTQ list, sample quantity, and test responsibility. |
| Process control | Feasibility of topology, winding, rotor retention, and housing interface; Prototype sequence, test fixtures, and instrumentation assumptions | Material route, fixture plan, in-process checks, and supplier risk log. |
| Outgoing evidence | Design maturity, Prototype evidence, DFM closure items, Sample lead-time dependency | Inspection report, electrical screen, mechanical screen, balance or thermal notes, and lot labels. |
| Repeat supply | Write the sample pass/fail gates before component sourcing begins.; Mark all substitutions and plan a production-intent validation build.; Review winding access, insulation clearance, rotor assembly, potting, and inspection reach before CAD freeze. | Effective-lot change control, corrective action loop, packaging standard, and shipment milestone plan. |