Description
Robotics · Drawing-based custom machining
CNC Machined Robot Arm Section: Application & Engineering Review
Bearing and mounting sections for a custom robot-arm joint. This component geometry is presented to help engineering and purchasing teams specify a custom part. Final material, dimensions and suitability are defined by your approved design.

What problem should this part solve?
Misaligned bearing bores or mounting faces can transfer assembly error into the motion system. Start with the functional interfaces so that manufacturing and inspection work from the same acceptance criteria.
Material, process and inspection plan
| Application | Bearing and mounting sections for a custom robot-arm joint. |
|---|---|
| Manufacturing route | CNC milling and boring; consider coordinated multi-face machining to preserve datum relationships. |
| Material options to review | Aluminum alloy for low mass or stainless steel where the environment requires it. |
| Surface finish to specify | Controlled deburring; compatible anodizing for specified aluminum alloys, with fit surfaces protected. |
| Critical inspection features | Bearing bore size, bore-to-face relationship, bolt-circle position and local wall thickness. |
| Dimensions & tolerance | Made to the approved customer drawing. Supply overall dimensions in mm, datums, fits and feature-specific tolerances; final capability is confirmed after engineering review. |
| Prototype & production | Quote sample and repeat-order quantities separately. Lead time, inspection documents and delivery scope are confirmed in the quotation. |
Machining difficulty and practical solution
CNC milling and boring; consider coordinated multi-face machining to preserve datum relationships. Bearing bore size, bore-to-face relationship, bolt-circle position and local wall thickness are the features to prioritize in the setup and inspection plan. Review tool access and workholding before freezing the drawing; agree any secondary operation rather than assuming it is included.
RFQ and sample approval checklist
Provide the CAD model and revision-controlled drawing, exact material grade, bearing bore size, bore-to-face relationship, bolt-circle position and local wall thickness, required finish and prototype/production quantities. Identify the features that control assembly and state the reports needed for release.
- Approve the first-piece measurement scope and the applicable drawing revision.
- Confirm material documents, final finish and packaging needed for your assembly.
- Review the sample against mating parts before approving repeat production.
Can LXCET review a custom version?
Send your drawing for a feasibility review of custom robot arm joint housing. The equipment and process guide explains listed machine ranges; the quality and inspection page explains how to define acceptance evidence. A machine’s travel or listed precision value is not a universal finished-part tolerance.
Request a Drawing Review → tonyzhou@lxcet.com
Related Robotics components
Technical reference and image scope
Bearing-seat fits must be selected for the actual bearing and loading arrangement. SKF bearing interface guidance.
Product photograph from the existing LXCET media library. Application descriptions are engineering review examples, not claims of a delivered customer program, certification or tested service rating. Material cannot be verified from appearance alone.
CNC Machined Robot Arm Section
Bearing and mounting sections for a custom robot-arm joint. Review materials, machining, surface finish and critical inspection features with LXCET before quotation.
Customizable parameters
Alu:6061/7075/5052
Steel:45#, SUS304, SUS316
Brass/Copper:H59, C110
Plastic:POM, PA66, PEEK
Ti: TC4
- CNC Turning
- CNC Milling
- Drilling
- Tapping
- Sandblasting
- Anodizing
- Polishing
- Zinc/Nickel Plating
- Black Oxide
- Deburr









