Gearbox Housings (Die Cast)
Cast gearbox casings with bored bearing seats, held to centre distance ±0.03 mm.
Gearbox casings cast with the ribs and bosses in the tool, then bored on the bearing seats and faces. Centre distance and bore parallelism are what decide whether the drive is quiet.
6–9 weeks
250 pieces
ISO 9001:2015 · IATF 16949
Technical Specifications
| Parameter | Value | Unit |
|---|---|---|
| Centre distance | ±0.03 | mm |
| Bore tolerance | H7 | - |
| Bore parallelism | 0.03 | mm |
| Wall thickness | 2.5–5.0 | mm |
| Max part weight | 12 | kg |
| Machined faces | ±0.05 | mm |
Available Materials
- AlSi10Mg
- A380 / ADC12
- AlSi9Cu3
Typical Applications
- Reducer housings
- Worm drive casings
- Pump gearboxes
- Automotive transfer cases
- Winch gearboxes
Surface Finishes
- As-cast
- Shot blast
- Powder coat
- Machined faces
- Sealing faces
Industries Served
- Automotive & EV
- Industrial Equipment
- Agricultural Machinery
- Energy & Oil & Gas
- Marine
What drives the price of this part
Derived from the callouts on this page. Where a driver is not on the drawing, it is not on this list.
- Tolerance
- Bore tolerance at H7 is the tightest callout this family carries. Tightening a callout is a process decision, not a machining decision: below the standard ±0.005 mm the work moves to grinding or jig boring, and the price moves with it.
- Part size
- Wall thickness at 2.5–5.0 mm decides which machine the part lands on and how many setups it needs. Size is the driver buyers most often leave out of a first enquiry, and it is the one that changes the quote fastest.
- Order size
- Minimum order is 250 pieces, where setup and tooling are amortised across the batch and per-part cost settles around cycle time and material. Below that quantity the same part costs more per piece, not less.
See how cycle time is calculated in the machining time calculator and what else moves a price in the cost driver reference.
How these parts are inspected
Matched to the callouts above and the instruments actually on the floor.
- Coordinate measuring machine (Zeiss CONTURA G2, two machines, GR&R 8.4% on the critical feature)
- Dimensional report against the drawing, with a 100% check on critical features rather than a sample
- Certificate of conformance and the mill certificate with every shipment
- Bore gauges and an optical comparator for hole position and edge form
- First article inspection to AS9102, because this family carries an aerospace or automotive certificate
The full equipment list, with counts, is on the capability page; the inspection sequence is on quality and inspection.
Questions buyers ask
- Cast or machined gearbox housing?
- Cast once the volume justifies the tool, because the ribs that make the housing stiff cost nothing per part. Machined-from-billet housings are heavier for the same stiffness.
Related part families
Gear Housings
Machined gearbox housings with bored bearing seats, held to centre-distance ±0.02 mm.
Gearbox Assemblies
Housings, gears, bearings and seals built and run-in as one unit with backlash recorded.
Motor Housings (Die Cast)
Cast motor housings with integral cooling fins and machined stator seats.