Custom 5-Axis CNC Aluminum Motor Housing / Servo Motor Shell

This custom CNC machined aluminum motor housing is produced as a complete servo motor shell for OEM drive systems. Machined from 6061-T6 aluminum on 4-axis and 5-axis CNC machining centers, the part combines multi-direction internal cavities, several flange mounting ears and two precision bearing bores in a single component. As a China CNC machining factory serving global B2B buyers since 2008, we deliver this housing as a custom machined metal part from prototype to mass production, with dimensional tolerance held to ±0.01mm and a stable, repeatable lead time.

Material & Machining Specifications

Manufacturing Process

1. Material cutting: aluminum bar or block is cut with machining allowance reserved for each face.
2. 5-axis rough machining: the bulk of the stock is removed and the outer profile, internal cavity and flange mounting ears are roughed out.
3. Semi-finishing: mounting faces, side holes and tapped pilot holes are machined with finishing allowance left for the final pass.
4. 5-axis finishing: bearing step bores are fine-bored, sealing faces fine-milled, threads tapped, and the multi-direction irregular cavity is formed. All critical features are completed in one clamping to avoid the position error caused by repeated setups - this is the key process challenge of this part.
5. Deburring and ultrasonic cleaning: tool marks and burrs are removed, and residual aluminum chips and cutting oil are flushed out of the internal cavity.
6. Surface treatment: clear anodizing, hard anodizing or high-gloss polishing as required.
7. Inspection: CMM, micrometer and bore gauge are used to verify coaxiality and dimensional tolerances before packing.
8. Packing: PE bag, pearl wool and export carton, or customer-specified packaging.

Why This Housing Requires 5-Axis Machining

• Multi-directional cavities and flange ears: the staggered cavities and multiple mounting lugs cannot be completed on a 3-axis machine in one setup, so 5-axis simultaneous machining is mandatory.
• Bearing bore coaxiality: the coaxiality of the internal bearing bores directly determines rotation smoothness and noise level of the finished motor.
• Sealing face flatness: the flatness of the cavity sealing plane guarantees assembly tightness and IP protection of the motor.
• Thin-wall deformation control: thin wall sections are machined with controlled cutting parameters and dedicated fixtures to prevent chatter marks and deformation.

Applications

This custom machined metal housing is used for servo motors, robot joint motors, new energy drive motors, industrial automation spindle motors, UAV power motors and medical drive motors. The same 5-axis process is applied to other custom CNC machined parts with complex cavities and tight coaxiality requirements.

Factory Capabilities - From 3D Drawing to Batch Delivery

Dongguan Changxinda Precision Technology Co., Ltd is a CNC machining factory established in 2008, with 4-axis and 5-axis CNC machining centers, turn-mill compound CNC lathes, CNC lathes and milling machines, around 100 employees and more than 200 customers worldwide. Our service starts from 3D drawing review and DFM analysis, moves to process planning, fixture design and first-article sampling, and ends with stable batch delivery. Every tool path mark on the finished surface is a detail of precision manufacturing. Machining accuracy reaches ±0.01mm, and we accept all kinds of non-standard aluminum parts and complex cavity 5-axis / 3-axis CNC machining.

As a CNC machining parts factory we support these industries:

• Consumer electronics: phone, tablet and laptop housings, heat sinks, camera brackets, VR/AR headset structural parts, smart wearable shells.
• Automation & industrial equipment: automation fixtures, jigs, module frames, linear guide sliders, motor mounts, sensor housings, conveyor line parts.
• Semiconductor & vacuum equipment: vacuum chambers, vacuum fittings, precision bases for semiconductor equipment, heat insulation and insulating parts, inspection fixtures.
• Medical equipment: surgical instrument bases, medical testing instrument housings, endoscope accessories, aesthetic device structural parts (medical-grade aluminum and stainless steel).
• Automotive: new energy vehicle motor housings, battery end plates, sensor brackets, lamp structural parts, modification parts, hydraulic valve blocks.
• Aerospace & UAV: aircraft structural parts, drone frames, landing gear parts, avionics instrument housings (lightweight aluminum precision parts).
• Optics & photonics: optical lens barrels, lens mounts, light source heat sinks, camera module brackets, inspection optical platforms.
• Telecom: 5G heat sink cavities, filter parts, RF transition structural parts, communication equipment enclosures.
• Robotics: robot arm joint parts, robot bases, reducer housings, AGV structural parts.
• Instruments & meters: testing equipment housings, precision gauge bases, flow meter parts, laboratory equipment accessories.

Prototype, Small Batch and Mass Production

We support prototyping, small batch and large volume production under one roof. Prototype orders can start from a single piece so that you can validate the design before tooling investment, while mass production runs are scheduled on dedicated 5-axis machining centers with fixed fixtures and documented process parameters to keep tolerances and lead time stable.

FAQ

Q: What is your minimum order quantity?
A: One piece for prototypes, and batch pricing improves from 100 pieces upward.

Q: How do you guarantee ±0.01mm accuracy?
A: One-setup 5-axis machining, dedicated fixtures, in-process gauging and a final CMM inspection report shipped with every lot.

Q: How fast can I get a quotation?
A: Send your 3D drawing (STEP / IGES / X_T) with material, tolerance and surface finish requirements, and our engineering team will reply with a factory quotation within 24 hours.

Request a Quote

Looking for a reliable CNC machining supplier for aluminum motor housings or other custom machined parts? Send us your drawing today and our engineers will review manufacturability, propose the process route and quote your project directly from our factory.