Custom Die-Cast Aluminum Junction Boxes
ALUMINUM ENCLOSURE CASTINGS · MADE TO DRAWING

Custom Die-Cast Aluminum Junction Boxes for Outdoor Use

Yongzhu Casting manufactures custom aluminum junction box bodies and covers from customer drawings, 3D models or approved samples. We coordinate tooling, die casting, CNC machining and finishing around your enclosure design and production requirements.

Share your cable-entry layout, mounting features, cover arrangement and expected quantities. Our team will review the casting and machining requirements before tooling and quotation.

Custom Die-Cast Aluminum Junction Boxes

Junction Box Components We Can Manufacture

Our core supply is custom aluminum castings and machined enclosure components. Box dimensions, connection features and finishing requirements are developed around your project.

Junction Box Bodies

Cast aluminum bodies with internal space, wall sections and mounting features defined by your design. Ribs, bosses and fixing points can be incorporated where suitable for the casting process.

Covers and Lids

Matching aluminum covers with screw locations, seating surfaces and project-specific profiles. Cover geometry is reviewed together with the box body to identify the interfaces that matter to assembly.

Cable-Entry and Mounting Features

Holes, threads, mounting faces and connector openings can be machined to drawing. Provide the required locations, thread specifications and mating-component details for review.

Existing Parts and Replacement Tooling

For an existing junction box, send the part drawing, sample information and current supply requirements. We can review the casting structure, machining operations and tooling needed for future production.
Custom Die-Cast Aluminum Junction Boxes

What We Review Before Tooling

A junction box needs to accommodate its internal components, connect to adjoining parts and fit its installation space. Our review focuses on features that affect manufacturing and assembly.

Body and Cover Fit

We check the mating geometry, fastening locations and drawing-defined tolerances. Where the design includes a gasket, its interface and seating requirements should be identified before tooling.

Walls, Ribs and Bosses

Wall sections, ribs, mounting bosses, draft and parting lines are reviewed for casting feasibility. Machining allowances are considered where finished dimensions or surfaces need additional control.

Openings and Machining Access

Cable entries, connector cutouts, threads and mounting holes are reviewed for location and tool access. We identify which features can be cast and which require secondary machining.

Mounting and Installation Space

External mounting points, internal fixing locations and fastener access are checked against the available drawing or model. Include surrounding components when they affect installation clearance.

From Drawing to Finished Junction Box Castings

Tooling, casting and secondary operations are planned around the approved part specification.

Drawing and RFQ Review

We review the available 2D drawing or 3D model, alloy, quantity, critical dimensions, finish and application requirements.

DFM, Quotation and Tooling Plan

Manufacturing risks, tooling scope, machining, finishing, inspection, price and estimated schedule are reviewed before the project starts.

Mold Making and T1 Approval

The mold is made to the approved drawing revision. T1 samples are submitted for dimensional, assembly, appearance or functional review as agreed.

Production, Inspection and Delivery

Approved parts move through die casting, secondary operations, final inspection, packaging and shipment according to the confirmed order requirements.

Inspection for Critical Junction Box Features

Inspection focuses on the dimensions and surfaces that affect fit, assembly and acceptance.

Feature Inspection Focus
Body and cover interfaces Drawing-defined dimensions, seating surfaces and flatness where specified
Cable entries and connector openings Size, position and specified thread requirements
Mounting bosses and fixing holes Location, height, hole depth and mating relationships
Gasket grooves and sealing surfaces Profile, dimensions and surface condition specified by the design
Cast and finished surfaces Burrs, visible defects, coating coverage and agreed appearance criteria

QUALITY STANDARDS

Our quality system helps ensure consistent production, traceable batches and reliable delivery for OEM projects.

Send Your Junction Box Drawing

Prefer email? Send your drawings and project details directly to our team.

Request a Quote Online

Complete the available fields and upload your drawing if possible. We will contact you if additional project information is required.

Questions About Custom Junction Box Manufacturing

Do you offer standard-size junction boxes from stock?

Our main business is manufacturing custom aluminum parts from drawings or approved samples. Send your required dimensions and quantity so we can review a suitable tooling and production route.

Yes. Cable-entry holes, threads, connector openings and mounting features can be reviewed as part of the machining scope. Include their dimensions, positions and specifications in the drawing.

Yes. Include the target rating and intended use in your enquiry. Achieving an IP rating depends on the complete enclosure configuration, including the cover, seals, openings and assembly. The required validation and responsibility for testing must be established for the project.

Our core supply is the aluminum box body, cover and related cast or machined parts. List any accessories or assembly work you need so their availability and inclusion can be confirmed in the quotation.

Part size, geometry, tooling complexity, machining, finish and production quantity all affect the quotation. We review these together rather than apply one minimum quantity to every enclosure.

Yes. Start with the available 2D drawing, sketches, sample photos and key dimensions. Further information may be needed before tooling and final production approval.

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