Deep-Drawn Steel Motor Can
SPCC/SPCE reference with 0.5–2.0 mm wall and typical L/D ≤2.5; final diameter, trim, pierce and flange tolerances by drawing.
Drawing-based motor component supply
DC Motor Housing Manufacturer
Drawing-based DC motor housings supplied as deep-drawn or rolled steel motor cans for brushed permanent-magnet designs, and as extruded or cast aluminum housings for BLDC thermal and structural requirements.
- Brushed DC steel cans and BLDC aluminum housings separated clearly
- Magnet location, end-cover fit and roundness controlled by drawing
- Stamping, joining, coating and machining selected by structure
Product routes
Separate Magnetic Steel Cans from BLDC Thermal Housings
The housing material and process depend first on whether the shell forms part of the magnetic return path or mainly provides structure and heat rejection.
Technical review
DC Motor Housing Review Parameters
Reference bands organize drawing review only. Steel grade, magnetic function, drawing ratio, final dimensions and tolerances must be confirmed from the released motor design.
| Parameter | Reference value / range | Release condition |
|---|---|---|
| Reference housing diameter | 20–120 mm project-review band | Smaller or larger designs require process-specific evaluation |
| Steel grade / magnetic function | SPCC/SPCE for magnetic return path / SUS304 for non-magnetic use | Brushed-DC magnetic shells require defined material and magnetic-property verification |
| Steel wall thickness | 0.5–2.0 mm review band | Drawing ratio, magnetic return path and stiffness determine the final value |
| Aluminum wall section | 1.5–4.0 mm review band | Extruded or cast BLDC route by geometry and thermal duty |
| OD / ID tolerance | ±0.03–0.15 mm review band | Diameter and process dependent; critical fits require explicit dimensions |
| Roundness / cylindricity | 0.01–0.10 mm review band | Precision deep drawing may require tighter values; measure after forming, joining and coating as specified |
| Length tolerance | ±0.05–0.15 mm review band | Total length is linked to end-cover assembly and axial preload |
| End-cover / bearing fit | Pilot H7/H8; bearing J6/K6; coaxiality ≤0.02 mm TIR reference | Press, crimp, screw or adhesive route and bearing datum must be stated |
| Draw-ratio reference | L/D ≤2.5 typical | Deeper shells require multi-station drawing, material and intermediate-anneal review |
| Critical surface finish | Ra 0.8–3.2 μm | Bearing seats may require Ra ≤0.8 μm; end-cover and press-fit faces by function |
| Surface protection | Zn/Ni plating, e-coat, paint or anodizing by project | Mask magnet-bonding, grounding and press-fit areas as required |
Final values become supply commitments only when written into the released drawing, approved specification, quotation and acceptance plan.
RFQ quick facts
What Buyers Should Define Before a DC Motor Housing RFQ
A useful quotation starts from the released geometry, mating interfaces, operating boundary and measurable acceptance criteria.
- Motor type
- Brushed PMDC or BLDC and whether the shell carries magnetic flux
- Magnet interface
- Ferrite arcs/ring, pole location, adhesive, clip or locating feature
- End interfaces
- Front/rear cover, bearing, vent, terminal, mounting and crimp geometry
- Service boundary
- Speed, temperature, corrosion, vibration, sample and annual demand
Product and supply scope
What Is a DC Motor Housing?
A DC motor housing protects and locates the motor components and provides end-cover and mounting interfaces. In a brushed permanent-magnet DC motor, a steel can may also complete the magnetic return path and locate ferrite arcs or a ring magnet. In a BLDC motor, an aluminum housing is generally selected for structure, low mass and heat transfer.
GX can coordinate the DC housing with ferrite magnets, magnetic rings and drawing-defined motor-component interfaces. The supplied boundary—bare shell, coated shell, magnets fitted or mechanical subassembly—must be listed in the approved BOM.
Project route
Control Forming, Roundness and Magnet Interfaces Before Assembly
The route differs between steel motor cans and aluminum BLDC housings, but both require released datums, protected interfaces and post-finish verification.
Magnetic / Structural Review
Confirm motor type, shell magnetic role, diameter, length, wall and interfaces.
Forming DFM
Review draw ratio, seam, vents, tabs, flanges, ribs, bosses and process allowances.
Shell Forming
Deep draw, roll and join, extrude or cast according to the approved route.
Pierce and Size
Trim, pierce, flange, calibrate diameter and machine critical aluminum interfaces.
Deburr and Finish
Clean and apply plating, e-coat, paint or anodizing with defined masking.
Fit and Release
Verify roundness, pilots, burr, coating and magnet/end-cover trial assembly as agreed.
Verification
Verify the Housing After Forming, Joining and Surface Finish
Inspection focuses on diameter stability, roundness, seam or draw condition, burr direction, magnet location and the end-cover fit that controls the working air gap.
| Control item | Method / evidence | Buyer benefit |
|---|---|---|
| Material / magnetic function | Certificate, thickness, hardness and mandatory magnetic-property check for brushed-DC magnetic steel shells | Confirms formability and the required magnetic return path |
| Diameter / roundness | Air gauge, ring gauge, roundness or CMM measurement | Controls air gap and end-cover assembly |
| Formed features | Optical or fixture inspection of tabs, vents, flanges and holes | Prevents interference and assembly damage |
| Edge / burr | Visual, tactile and measured burr-height standard | Protects windings, magnets and operators |
| Coating / fit | Thickness, adhesion, masking and trial magnet/end-cover assembly | Keeps bonding and press-fit surfaces functional |
Application fit
Where DC Motor Housing Fits OEM Motor Designs
Application fit is established by the mating motor package, mounting, load, thermal path, environment and validation—not by the housing name alone.
Automotive Auxiliary Motors
Steel cans for window, seat, wiper, lock, pump and actuator projects.
Pump and Blower Drives
Brushed or BLDC housings reviewed for corrosion, airflow and mounting.
Appliance Motors
Compact shells coordinated with ferrite magnets, end covers and batch assembly.
Compact BLDC Drives
Aluminum housings for automation, tools and high-power-density packages.
Project control
Documented Control for Drawing-Based DC Motor Housing Supply
GX coordinates revision, material, process, sample approval, critical-characteristic inspection and recurring records according to the project scope. Certification claims are limited to their documented company and product scope.
Revision and BOM Control
Housing material, interfaces, finish, supplied components and acceptance follow the released revision.
Sample Approval
Dimensions, interface fit, surface and project-specific tests are recorded before recurring production.
Batch Inspection
Incoming, in-process and final controls use the agreed method, fixture, sampling and limits; Cpk ≥1.33 is the reference target where critical-characteristic capability is required.
Available project evidence is confirmed at quotation and may include material records, dimensional or CMM reports, roughness, coating, leakage, cleanliness and marked-drawing results.
Buyer communication
Discuss DC Motor Housing Projects Face to Face
GX Magnet uses industrial exhibitions and engineering discussions to connect magnetic materials, stator/rotor interfaces and drawing-based motor-component supply.
Bring the housing and mating-component drawings. The review can identify the datum chain, supply boundary, process risks and missing RFQ information before formal quotation.
Sample Review
Compare materials, housing forms, machined interfaces and surface treatments.
Engineering Discussion
Review stator fit, bearing axis, mounting, cooling, sealing and inspection.
Supplier Evaluation
Plan DFM, sample approval, evidence, change control and recurring communication.
GX Magnet
Magnetic-Material and Motor-Component Experience Since 1992
GX combines established permanent-magnet experience with drawing-defined motor-component coordination so housing interfaces can be reviewed together with the stator, rotor, magnets, end covers and operating package.
Magnetic Interface Knowledge
Ferrite magnets, multipole rings and rotor/stator component experience support air-gap, magnet-location and assembly discussions.
GX-Managed Manufacturing Network
Forming, machining, treatment and assembly responsibilities are coordinated and stated by project rather than described as universally in-house.
Drawing-Based Verification
Critical dimensions, sample records and agreed batch checks connect the quotation to recurring delivery.
30+ Years Serving Clients Worldwide
FAQ
DC Motor Housing Sourcing Questions
Clarify the drawing, interfaces, process route, operating conditions, test boundary and supplied BOM before comparing quotations.
Why must brushed DC and BLDC housings be separated?
A brushed PMDC steel can can form part of the magnetic return path and locate magnets. A BLDC aluminum housing primarily provides structure and heat transfer. Their materials, dimensions and acceptance logic are different.
Can GX supply magnets installed in the DC motor housing?
It can be reviewed when magnet material, pole position, adhesive or retention method, air-gap datum and inspection responsibility are included in the drawing and BOM.
How is roundness controlled after deep drawing?
Draw sequence, material, trimming, calibration and measurement condition are defined before release. Roundness should be checked after the process stage that represents final assembly condition.
When is a rolled steel shell used instead of deep drawing?
Rolled and joined shells can suit open-ended cylinders, longer lengths or different tooling economics. The seam's effect on diameter, magnetic return path and appearance must be reviewed.
How are burrs controlled around vents and terminals?
The drawing should identify burr direction and maximum height. Tool condition, deburring and final inspection are then tied to the winding and assembly risk.
Can the housing be plated before magnet bonding?
Yes when the coating is compatible, but magnet-bonding areas may need masking or a qualified surface condition. Adhesion and corrosion requirements must be specified together.
Can GX supply a complete DC motor?
The product page covers the housing or confirmed housing/magnet mechanical subassembly. A complete motor is not included unless separately quoted and listed in the approved BOM.
What is needed for a DC housing quotation?
Provide motor type, 2D/3D files, material and wall, magnet interface, end covers, vents and terminals, coating, tolerances, sample quantity and annual demand.
Request for quotation
Request a Quote for a DC Motor Housing
Send 2D/3D files, mating interfaces, material and process requirements, operating limits, surface finish, sample quantity, annual demand and validation expectations.
- Housing dimensions, datums, critical fits and GD&T
- Stator, end-cover, bearing, mounting, connector and sealing interfaces
- Material, forming route, machining, treatment and supplied BOM boundary
- Temperature, speed, load, cooling, environment and acceptance plan