Bearing and datum features
Identify the datum scheme, bearing bores and alignment requirements.
Motor housing interfaces
EV & Motor Housings.
Die-cast and machined aluminum housings for traction motors, industrial motors and integrated e-drive systems — reviewed around bearing alignment, cooling, sealing and production volume.
Define the supplied condition, critical dimensions and acceptance plan in the drawing review. Published process references depend on material, geometry and the agreed order scope.
The Interfaces That Define the Housing.
Thermal interfaces
Define cooling passages, thermal contact areas and material conditions.
Sealing and assembly
Specify mating faces, leak-test requirements and fastener access.
Production route, manufacturing responsibility, available documentation and acceptance criteria are confirmed for the particular product and order.
Feature review
Follow the bearing axis, thermal path and seal.
The cutaway exposes opposed bearing seats, the cylindrical body and mounting feet. Reference the finished bearing bores to the mounting datums so the housing review follows the motor axis through the assembly.
Separate the bearing fits from cooling and sealing interfaces on the drawing. This keeps bore alignment, thermal contact and the closure requirements tied to the surfaces that perform each function.
Manufacturing Scope
Concentric bearing bores and controlled sealing faces.
Casting route
130–4,400T aluminum HPDC network; vacuum assistance where required
Machining
Bearing bores, datums, sealing faces and threaded ports
Inspection
CMM, concentricity, runout and project-defined leak testing
Documentation
FAI, control plan and PPAP scope by project
Representative Components
EV & Electric Motor Housings — Component Forms & Review Sequence
- Bore alignment
Define bearing datums and mating interfaces.
- Thermal and sealing faces
Review cooling features, gasket lands and machining stock.
- Assembly checks
Agree dimensions, cleanliness and project-defined leak testing.
Review together: bearing bores and alignment datums; cooling passages and sealing interfaces; casting, machining and inspection scope.
End-bell form with central bore and bolt circle.
Pocketed electronics-housing form with connector openings.
Drive-housing form with multiple bores and joining faces.
Typical Applications
- EV traction motors
- E-axle and gearbox housings
- Industrial servo motors
- Pump and compressor motors
Materials & Finishes
- ADC12 / A380 for production castability
- A360 where corrosion resistance matters
- Project-specific low-porosity alloys
- Managed powder coat, e-coat and conversion coating
Frequently Asked Questions
Can cooling channels be integrated?
Yes, subject to geometry and process review. The casting, machining and leak-test route is confirmed from the drawing before quotation.
What tolerances can be held on bearing bores?
Critical bores are CNC finished after casting. Achievable tolerance and positional control depend on size, datum structure and inspection access.
Prepare the project review
Align the bearing, mounting and sealing features.
Send the part drawing, functional interfaces, operating conditions and production requirements.
- Bearing bores and alignment datums
- Cooling passages and sealing interfaces
- Casting, machining and inspection scope
Have a Drawing for EV & Electric Motor Housings?
Send the model, volume and critical requirements for engineering review and a project-specific quotation.