Produced in stainless steel by Aunov Tech, the Auto starter motor housing is formed and machined on the same floor. In duty, the starter motor housing houses the armature and carries the drive-end bearing. The same floor forms, machines and inspects the part, which keeps tolerances consistent from sample to volume without handing the part to another vendor.
Product overview
What defines this metal housing is, the forming route, the tolerance band and the sealing faces, audited against the approved sample at each production release.
The press shop and machine shop that make this metal housing share one floor, so a drawing change is absorbed in one step, and the approved sample is kept as the master.
How it is manufactured
This is how the metal housing is built: The drawn envelope is produced in stages with anneals between them; threads are single-pointed or rolled and seats bored in one setup where possible.
Each shipment is traceable to the signed first article, and a reorder is a repeat, not a new start.
Materials and finishing
The standard stock list carries carbon steel SPCC / DC01, 304 and 316 stainless, aluminium, brass and copper and this metal housing is costed in carbon steel or stainless.
The coating is matched to the working environment: plating, anodising, powder coating, electrophoresis and passivation. Once approved, the finish for this metal housing is fixed and does not get re-decided.
Later runs are measured back to the first article, so material and finish stay consistent between shipments.
Quality control
Production runs under an ISO 9001 certified quality system: incoming material is verified against mill certificates, first articles are measured on a CMM, and every production run is inspected against the first-article report. At starter motor housing level, bore-to-pilot concentricity is measured on a CMM at first article, and every run is gauged for flange flatness. Functional testing – torque, leak or pressure – can be written into the plan, with certificates included in the shipment file.
Applications
Typical installation of the metal housing is in vehicle and under-bonnet assemblies for customers who buy to drawing.
Drawings for this metal housing are adapted across programmes, so the specification is set by the toughest of them, and approvals carry across programmes.
Specifications
| Item | Auto starter motor housing |
|---|---|
| Brand | AUNOV |
| Designing | Made to your 2D/3D drawings (PDF, DWG, STEP, IGS) – samples are reverse-measured into a controlled drawing; changes are priced before they are made. |
| Tooling | Our toolroom covers die design, wire-cut EDM and maintenance, so no tooling step is outsourced, and ownership is confirmed on the quotation. |
| Samples | Samples are issued for approval before the run, so the approved first article becomes the gauge reference, and later batches are gauged back to the signed sample. |
| Materials | Carbon steel (SPCC / DC01), 304 / 316 stainless, aluminium, brass and copper – the grade is matched to the duty of this housing. |
| Surface finish | Zinc or nickel plating for corrosion, plus powder coating or electrophoresis on housings; laser etching on request. |
| Processing | Deep drawing from coil or blank, with in-process annealing so walls thin evenly; trim, pierce, form and finish. |
| Equipment | Mechanical presses from 5 to 250 T, hydraulic presses 250-500 T, annealing ovens, plus CNC turning and machining centres. |
| Tolerance | +/-0.1 mm on formed features and +/-0.2 mm on overall lengths; tighter bands confirmed against the die before quoting. |
| Delivery terms | FOB Ningbo or Shanghai, T/T or L/C, with D/P accepted on repeat business; sea or air freight is quoted to your door. |
