Original case, design illustration and trial-transfer workflow reviewed; no tool measurement, casting test or equipment compatibility verification.
Zonzao 1929 reducer-housing die case
An automotive-labelled reducer-housing die-development case, illustrated by an annotated design. Published part and tool dimensions guide a tooling discussion, not a stock gearbox or machine-fit claim.
This is a tool-development reference
Do not buy a complete reducer from a housing illustration.
The original entry is titled 1929减速器壳体 and categorised as an automotive component. [1] Its drawing-like image shows housing ribs, openings and coloured feature markers. The source does not define those colours, identify an OEM part number or show an assembled reducer.
Useful for a new die enquiry
The case presents a complex housing design with a listed aluminium material, tool envelope and two slides. Use it to discuss the feasibility and delivered scope of tooling for your controlled drawing.
Insufficient for replacement purchase
Gear ratio, bearing seats, shaft arrangement, mounting interfaces, sealing design and machine compatibility are not specified. “1929” alone is not evidence that a part fits your equipment.
If you need a replacement housing, start with the approved drawing and exact part identity. If you need a new design, define the application and design authority before asking the die supplier to optimise the casting. Neither task is solved by visual resemblance.
Separate the part, tool and machine
The catalogue gives different dimensions for different objects.
| Reference | Published value | Decision still needed |
|---|---|---|
| Part envelope | 401×104.3×305 mm | Drawing axes, revision and whether the envelope is before machining. |
| Tool envelope | 1010×1050×1120 mm | Installation drawing, orientation and complete accessories/connection space. |
| Material | ADC12 | Agreed alloy specification, material records and final-part requirements. |
| Cavities / slides | 1*1 / 2 | Exact cavity arrangement, slide actuation and supplied wear details. |
| Machine reference | 1600/2000T | Exact model, interfaces, available trial configuration and quoted production machine. |
These are the original case values, not measurements by CivilEquip. [1] No casting mass, wall-thickness map, die weight, cycle time, life guarantee or finished tolerance is published for this case. Request these against the actual design and supply contract rather than estimating them from the envelope.
Tonnage is only one machine check
Let the receiving foundry approve the tool interface.
A 1600/2000T reference does not show the tool mounted on your machine. Provide the machine model and controlled drawings for the platen/tie-bar space, mounting, opening/ejection arrangement and relevant connections. Ask the toolmaker to identify the supplied tool boundaries and any receiving-factory modification.
The manufacturer describes slides, replaceable pins and thermal circuits among its design methods. [3] For this case, the source lists two slides but gives no actuation diagram, maintenance clearance or coolant circuit. Require the project-specific design review before approving machining of the tool.
Before release
Review parting, formed features, machining stock and functional surfaces against the final-component drawing. Assign responsibility for changes and the accepted DFM revision.
Before shipment
Check the final interface package, handling arrangements, connections and installation requirements with the receiving foundry. Record deviations before the die arrives.
Approve a casting that can become your finished part
Do not stop at the first attractive sample.
Zonzao says trial material matches the specified product material, trial-machine tonnage matches the customer’s requirement and process records accompany transfer. [2] This is its published workflow. No traceable trial report for the 1929 case was supplied in the reviewed pages.
- Define the inspection zones: mark datums, mounting, bearing/sealing interfaces, cosmetic areas and any internal-quality requirements with the design owner.
- Identify the run: record the tool and drawing revision, material batch, machine/configuration and trial conditions.
- Inspect at the right stage: agree which checks apply as cast and which require the specified machining or finishing.
- Resolve corrections: link a tool change to new samples and a revised inspection report; approve before repeat production.
- Repeat at destination: establish the receiving factory’s acceptance run and the support provided if results differ.
“ADC12” alone is not a strength, leak-tightness or service-life guarantee. No generic porosity grade or test pressure is assigned here. If those characteristics matter, have the buyer’s engineering team state the method, inspection area and acceptance criteria, then request evidence against them.
Define what you own and receive
A housing design, die and production order are distinct contracts.
- Tool package: identify die pieces, inserts, accessories, spare/wear items and final drawings.
- Trial package: specify samples, agreed inspections, process records, corrections and die history.
- Future use: agree storage, maintenance, design-file rights and conditions for transfer to another foundry.
- Parts supply: quote recurring castings, machining and finishing separately, with their own acceptance and producer responsibilities.
Price, minimum order, available delivery date, tool life and warranty are not established by the public case. Request a dated configuration-specific offer. Keep the original case reference visible, but do not describe it as available inventory or an approved engineering-machine component.
Turn the case into a controlled die enquiry
Use your drawing and receiving-machine details.
Sources & review
- Original 1929 reducer-housing case ↗
Automotive category, dimensions, ADC12, cavities/slides and tonnage. Illustration associated with case in source HTML. No replacement-part specification.
2026-10-11 - Trial and die-transfer controls ↗
Supplier workflow for matched trial material/machine tonnage, recorded processes, sample inspection and die history. No case-specific trial record.
2026-10-11 - Die-development methods ↗
Supplier descriptions of parting/slides, replaceable pins, gating, venting and thermal circuits. No numeric process settings for this case.
2026-10-11
Specifications come from the manufacturer’s published information and the sources above; buying advice is written by CivilEquip with AI assistance. Ask the manufacturer to confirm the data for your configuration. Editorial policy · Report a correction.