Precision Gearbox Housing | CNC Machined Housings
CHX Metal (Shenzhen Changhexin Precision Hardware) produces precision gearbox housings and transmission cases with ±0.005mm bore tolerance. ISO 9001:2015 certified. Operations are certified to ISO 9001:2015 and ISO 14001:2015, with CMM inspection on every batch.
Housings
- Gearbox housings
- Transmission cases
- Reducer housings
- Bearing seats
Precision
Bore and position tolerance ±0.005mm ensures smooth gear mesh and low noise.
Materials
- Aluminum 6061/7075
- Cast iron
- Steel
Quality
ISO 9001:2015 certified with CMM inspection.
Frequently Asked Questions
What gearbox parts do you make? Gearbox housings, transmission cases, reducer housings and bearing seats.
What tolerance for bores? ±0.005mm bore and position tolerance for smooth gear mesh.
Which materials? Aluminum, cast iron and steel.
Certifications? ISO 9001:2015 and ISO 14001.
Get a Quote → Upload your drawing/3D model for a process plan and quotation within 24 hours.
Materials & Specifications
We machine precision gearbox housing machining from ADC12 die castings, 6061, HT200 cast iron. Typical accuracy is ±0.005mm bearing bores, 0.008mm concentricity. Parts are manufactured to your 2D drawing or 3D model, in sizes from a few millimeters up to 1000mm envelopes, from single prototypes to hundreds of thousands of pieces per year.
Typical Applications
- planetary gearbox housings
- RV reducer casings
- right-angle drive boxes
- servo gearheads
These are representative examples; we regularly take on custom geometries outside this list. Send your drawing for a feasibility check.
Our Machining Capability
Production runs on 3-axis and 5-axis vertical machining centers, CNC lathes, and Swiss-type automatic lathes. Fixtures are designed in-house for repeatable clamping, and programs are simulated before cutting to protect tight tolerances. Our ISO 9001:2015 quality system covers the full process chain: incoming material verification, tool wear monitoring, SPC on critical features, and final release inspection. Traceability is maintained lot by lot, so any part we ship can be traced back to its material batch, machine, and operator.
Surface Finishing Options
Available finishes include Type II and Type III anodizing (clear, black, and custom colors), sandblasting, wire drawing, laser engraving and silk-screen marking, zinc and nickel plating, passivation, and black oxide. Cosmetic parts are inspected under standardized lighting with defined surface criteria.
MOQ, Lead Time & Packaging
We hold safety stock for repeat customers and support Kanban or VMI delivery schedules for long-running programs. Every shipment includes packing list, material certificates, and inspection report. Direct express shipping worldwide from Shenzhen typically reaches Europe and North America in 3-6 days.
Why Choose CHX Metal
Located in Bao'an, Shenzhen, we ship from one of the a highly connected manufacturing hub, 30 minutes from the airport and one hour from Yantian port. That means more courier options, faster transit, and lower logistics cost for your supply chain.
