5-Axis CNC Machined Robotic Arm Parts with Assembly

This service produces complex robotic arm parts on 5-axis CNC centers, including arm links, joint flanges, wrist housings and end-effector plates, in aluminum and stainless steel. Parts can be supplied as a kit or with bearings, inserts and fasteners pre-installed. It suits robotics startups, research labs and automation OEMs that want one supplier for machining, finishing and sub-assembly.

Material: Aluminum
Tolerance: to ±0.005 mm
MOQ: 1 piece
Prototype lead time: 3–7 days

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Aligned joint axes from multi-face 5-axis cuts
Bearings, inserts and dowels installed on request
Aluminum links with stainless shafts and flanges
CMM inspection and rotation checks on sub-units

ISO 9001 quality system, 100% critical-dimension inspection

NDA on request; your drawings are never shared

Door-to-door shipping with export documents

Item ref. 1601694035265 ·

Specifications
Process	5-axis CNC milling, CNC turning, bearing pressing, sub-assembly
Materials	Aluminum 6061-T6, 7075-T6; stainless steel 304, 17-4PH
Surface Finish	Anodizing, passivation, sandblasting
Tolerance	±0.05 mm standard; down to ±0.005 mm on critical features
MOQ	1 piece; prototypes through mid-volume runs
Drawing Formats	STEP, IGES, X_T, STL, DWG, DXF, PDF
Lead Time	Prototypes typically 3–7 working days; production usually 10–20
Inspection	FAI, in-process checks, 100% critical dimensions; CMM

Manufacturing

How we make this part

Process, material options and inspection for 5-axis cnc machined robotic arm parts with assembly.

Five-axis machining cuts the angled bores, curved link profiles and multi-face hole patterns of robotic arms in few setups, which keeps joint axes aligned along the arm. Turned parts such as shafts and spacers come from CNC lathes, and small fixtures are made to support thin links. Sub-assembly covers bearing pressing, thread insert installation and dowel fitting.

6061-T6 and 7075-T6 aluminum keep arm mass low, improving payload and dynamics. Stainless steel 304 or 17-4PH is used for shafts, flanges and parts in contact with food or cleaning chemicals. Anodizing protects aluminum and gives a consistent color across the arm; passivation is applied to stainless parts. Bearing seats are sized considering anodize growth.

Joint bores, flange flatness and hole patterns are measured with CMM, and assembled sub-units are checked for free rotation and alignment. Critical dimensions are inspected before packing. Typical applications include collaborative robot arms, SCARA arms, educational robots, laboratory automation arms, grippers and end-of-arm tooling plates, delivered as loose parts or as checked mechanical sub-assemblies ready for motors and wiring.

FAQ

Frequently asked questions

Do you assemble robotic arm parts?

We offer mechanical sub-assembly: pressing bearings, installing thread inserts and dowel pins, and fitting shafts and spacers. Electronic integration, motor wiring and calibration are usually done by the customer. Sub-assemblies are checked for alignment and smooth rotation before shipment.

Which material is best for robotic arm links?

Aluminum 6061-T6 is the most common because it is light, stiff enough, easy to machine and anodizes well. 7075-T6 is used for high-load or slender links. Carbon fiber tubes with machined aluminum joints suit very light arms. Stainless is reserved for shafts and hygienic applications.

How do I get a quote for 5-axis cnc machined robotic arm parts with assembly?

Send a 3D model (STEP or IGES) and a 2D drawing with tolerances, material, finish and quantity through the quote form or by email. An engineer replies within 24 hours on business days with price, lead time and any DFM suggestions.