CNC Prototype Housing
6061-T6 billet reference for prototypes and low-volume builds; project-defined H6–H9 fits and Ra 0.8–3.2 μm can be reviewed on specified machined interfaces.
DRAWING-BASED CUSTOM HOUSING SUPPLY
Drawing-based motor housings for non-standard geometry, mounting, material, cooling and sealing requirements. GX reviews the housing interfaces and expected volume first, then selects CNC machining, extrusion, casting or deep drawing for prototype, pilot and recurring production.

Product routes
No single process fits every custom housing. Geometry, tolerance, cooling or sealing requirements, surface finish, tooling and annual volume are reviewed together before the manufacturing route is fixed.
Before quotation
Send the drawing, material or process preference, operating requirements and expected volume together. A complete RFQ package reduces clarification rounds and allows process, tooling and inspection costs to be reviewed at the same time.
Technical parameters for quotation
Use these parameters to align material, process route, critical geometry, operating conditions and inspection before quotation. Reference ranges support RFQ review; final requirements follow the released drawing and acceptance plan.
| Parameter group | Project-specific review basis | Release basis |
|---|---|---|
| Material / Process Route | 6061-T6 / 6063-T5, ADC12 / A356 / HT200–HT250, SPCC / SPCE / SUS304 or drawing-specified material; CNC, extrusion, casting or deep drawing selected around geometry and volume. | Released material specification and approved manufacturing route. |
| Geometry / Critical Fits | Bearing bores, stator or cover pilots, mounting datums and mating interfaces; H6–H9 fits and 0.02–0.15 mm geometric-control bands may be reviewed where specified. | Released GD&T, datum scheme, fits and dimensional limits. |
| Cooling / Sealing | Cooling passages, sealing faces and pressure boundaries defined by the application; proof pressure may be reviewed at 1.5–2× maximum working pressure where specified. | Agreed medium, pressure, hold time and leakage criteria. |
| Surface / Finish | Specified machined surfaces may reference Ra 0.8–3.2 μm; coating, masking, corrosion protection and cleanliness follow project requirements. | Released finish specification and protected-interface definition. |
| Mechanical / Assembly Interfaces | Bearings, end-cover pilots, stator interfaces, terminals, connectors, fasteners and mounting features are reviewed against mating components. | Released interface drawings and approved BOM. |
| Inspection / Acceptance | FAI, CMM, gauges, surface, coating or leakage checks selected according to critical characteristics; capability targets are agreed by project. | Approved sample baseline, inspection plan and acceptance limits. |
| Supply Boundary | Bare housing, machined housing, finished housing or drawing-defined mechanical subassembly only when included in the quotation. | Released BOM and quoted supply scope. |
CUSTOM REQUIREMENT DEFINITION
Custom motor housing projects often begin with non-standard geometry, mating components and operating requirements rather than a fixed manufacturing route. GX reviews mounting datums, bearing and stator interfaces, cooling or sealing boundaries, material constraints and expected volume first, then converts them into a manufacturable housing definition.

PROTOTYPE-TO-PRODUCTION TRANSFER
Prototype and recurring-production routes do not always need to be identical. A CNC-machined sample may later move to extrusion, casting or deep drawing when volume justifies tooling. GX keeps the approved datums, critical fits, mating interfaces and acceptance criteria visible during that transition so process changes do not redefine the customer assembly.

APPROVAL BEFORE REPEAT SUPPLY
Sample approval should establish more than a dimensional pass. The approved baseline can include drawing revision, critical datums, mating fits, surface or sealing requirements, inspection method and the quoted supply boundary. Recurring production then follows the same baseline unless a controlled change is released.
Final values apply to production only after confirmation in the released drawing, approved specification, quotation and acceptance plan.

Product and supply scope
A custom motor housing project starts when standard frame geometry or interfaces cannot fully match the motor package. The housing is defined around stator and bearing locations, end-cover and mounting interfaces, cooling or sealing requirements, material, surface finish and operating environment. Depending on geometry, tolerance and volume, the manufacturing route may use CNC machining, extrusion, casting or deep drawing. Critical fits may be reviewed to H6–H9 and specified machined surfaces to Ra 0.8–3.2 μm, with final values confirmed in the released drawing. GX can supply prototype, machined or finished housings and drawing-defined mechanical subassemblies according to the approved BOM.

Project route
The same approved interfaces, datum scheme and acceptance criteria follow the housing from route selection and prototype build through process approval and recurring production.

Review 2D/3D drawings, mating parts, critical interfaces, operating conditions, expected volume and required evidence.
Compare CNC, extrusion, casting, deep drawing or fabrication against geometry, tolerance, tooling and volume.
Build CNC prototypes or tooling samples and record any controlled deviation from the released design intent.
Confirm critical bores, datums, mounting, end-cover, cooling, sealing and other mating interfaces in the actual assembly condition.
Lock the approved process route, tooling, fixtures, inspection method, surface requirements and acceptance limits.
Carry drawing revision, BOM, process controls, critical characteristics and traceability into recurring production.
Verification
Verification connects material, critical geometry, functional boundaries and surface requirements to the same drawing revision and acceptance criteria used for sample approval.

| Control item | Method / evidence | Buyer benefit |
|---|---|---|
| Material / Process Route | Material certificate or project-specific test, with the approved manufacturing route and revision recorded. | Confirms the supplied housing follows the approved material and process baseline. |
| Critical Geometry | CMM, gauges, roundness, roughness or dedicated fixtures according to drawing-defined datums and fits. | Confirms mating interfaces remain within the approved assembly condition. |
| Cooling / Sealing Boundary | Pressure, leakage, flow or interface checks where the housing includes defined fluid or sealing functions. | Verifies the project-defined cooling or sealing boundary. |
| Surface / Protected Interfaces | Roughness, coating thickness, masking, cleanliness and surface-condition checks where specified. | Protects critical fits, sealing, grounding and downstream assembly. |
| Approval / Change Control | Sample records, marked drawing, inspection plan, revision and traceable change records. | Keeps recurring supply aligned with the approved production baseline. |
Application fit
Custom housing requirements vary with packaging, mounting, thermal duty, environment and production volume. The manufacturing route follows the application—not the housing name alone.

Tight packaging, mounting interfaces, cooling or sealing boundaries and corrosion exposure define the housing. Prototype and production routes are selected around validation needs and expected volume.

Compact housings balance stator location, moisture protection, cooling and production cost. Extrusion, casting or formed-shell routes can be compared around geometry, volume and assembly requirements.

Precision mounting datums, compact packaging and interface alignment matter where motion accuracy and repeated acceleration affect assembly. Machining and housing routes follow the required geometry and volume.

Non-standard mounting, larger sections, cooling arrangements and lower production volumes can change the housing route. Fabricated, cast or fully machined structures are reviewed against project requirements.
Project control
GX maintains drawing revision, approved process route, BOM, sample baseline and critical-characteristic records against the agreed project scope. Certification claims apply only to the documented company, process and product scope.
Housing material, manufacturing route, mating interfaces, surface requirements, supplied components and acceptance criteria follow the current released drawing and BOM.
Critical geometry, functional fits, surface condition and project-specific evidence are recorded to establish the approved production baseline.
Defined gauges, inspection frequency, process records and acceptance limits are carried into recurring production. Capability targets are applied only where specified by the project.
Project evidence is defined during quotation and may include material records, FAI, dimensional or CMM reports, interface checks, surface results, leakage or other project-specific validation records.
Engineering and sourcing FAQ
Eight practical questions covering process selection, drawing definition, prototype-to-production transfer, critical interfaces, inspection and repeat supply.
The difference is determined by motor architecture, load path, bearing arrangement, cooling and manufacturing route. Compare the drawing interfaces and validation requirements rather than choosing by frame appearance alone.
Review alloy, casting or extrusion route, machining allowance and annual volume. The selected route must support the required datum structure, machining access, thermal behavior, surface treatment and projected volume.
The critical dimensions are those controlling rotor-stator alignment and final assembly. Typical review points include bearing bores, mounting faces, datums, concentricity and cable or connector features, but the customer drawing must identify the functional datum scheme and inspection priority.
Control them from a consistent machining datum and verify the relationship, not only each size independently. The acceptance plan should define bore size, position or concentricity, face runout and the gauge or CMM method.
Testing is required when the housing forms a sealed cavity, coolant path or specified environmental barrier. Define coating, sealing, leakage criteria, thermal path and environmental exposure, test pressure or method, allowable leakage and the surfaces included in the test boundary.
Inspection should combine material or casting checks with critical machined dimensions, datum relationships, thread and surface-condition checks. Coating thickness, cleanliness, leakage or packaging controls are added only when the released specification requires them.
Provide 2D drawings and 3D data, material and process preference, bearing bores, mounting faces, datums, concentricity and cable or connector features, coating, sealing, leakage criteria, thermal path and environmental exposure, annual quantity and acceptance method. Identify supplied inserts, machining scope, surface treatment and any required test fixtures.
Agree the drawing revision, datum strategy, critical-characteristic list and inspection method before production approval. The first-article package should record results and approved deviations; recurring supply follows the released drawing, quotation and control plan.
Request for quotation
Send 2D/3D files, mating interfaces, material and process requirements, operating limits, surface finish, sample quantity, annual demand and validation expectations.