Custom 6061 Aluminum Alloy Motor End Cover Flange and Motor Mounting Base with Natural Anodizing by CNC Multi-Axis Milling

Our custom aluminum motor end cover flange — also known as a precision motor mounting base — is one of our core custom CNC machined metal parts. Manufactured in our professional CNC machining factory for servo motors, stepper motors, and robotic joint actuators, it is machined from premium 6061 aluminum alloy plate. This flange base serves as the front-end mounting bracket of motors, fixing the motor, connecting a reducer or actuator, and providing locating support and installation fixation. It ensures concentric shaft transmission while reducing operating vibration.

We adopt CNC multi-axis milling combined with turn-mill composite machining for full production. The manufacturing process starts from large aluminum plate blanking. Because both front and back sides carry complex cavity structures, we perform two clamping and turning-over operations. In a single process we machine the square flange mounting lugs, circumferential fixing holes, multi-step cavity, center bore, and circular locating spigot. The center inner bore and circular locating spigot are precision-turned to guarantee roundness and coaxiality, meeting assembly accuracy requirements of motor rotors and shafts. After machining, we carry out precision deburring and ultrasonic cleaning. Natural anodizing is applied to deliver anti-rust, wear-resistant performance while maintaining a metallic appearance.

This motor end cover flange has strict manufacturing challenges. The position tolerance of flange mounting holes, coaxiality of the locating spigot, and flatness of the end face must be tightly controlled to ensure concentric motor assembly and reduce running jitter. Our experienced team optimizes fixtures and cutting parameters to stably achieve tolerances up to ±0.01mm.

As a reliable manufacturer, we provide full services including 3D drawing review, DFM process planning, prototyping, small-batch trial runs, and mass volume delivery. Our factory produces custom CNC metal components across a wide range of industries: consumer electronics, automation & industrial equipment, semiconductor & vacuum equipment, medical devices, new energy automotive, aerospace & drones, optics & optoelectronics, 5G communication, robotics, and instruments & meters. Whether you need one-off prototype validation or large volume manufacturing, our team can support your project and deliver a competitive quote.

• Material: 6061 aluminum alloy — lightweight, high rigidity, and good heat dissipation
• Machining: CNC multi-axis milling + turn-mill composite machining, two-side flip for complex cavities
• Precision: Strict control of hole position, coaxiality, and flatness, with tolerances up to ±0.01mm
• Structure: Square flange mounting lugs, multi-step cavity, locating spigot, and center bore
• Surface Treatment: Precision deburring, ultrasonic cleaning, and natural anodizing for anti-rust & wear resistance
• Flexible Production: Support for prototype, small batch, and mass manufacturing

• Precise coaxiality control ensures concentric motor & rotor assembly, effectively reducing running vibration
• High-flatness end face provides stable locating support for reducer and actuator connection
• Multi-step cavity design enhances rigidity while keeping the motor mounting structure lightweight
• Natural anodizing improves corrosion resistance and maintains a premium metallic appearance
• One-stop manufacturing service from drawing analysis to finished goods, simplifying your supply chain
• Scalable production capacity for prototype testing and high-volume commercial orders

• Servo & Stepper Motors: Front-end flange mounting base for servo and stepper motors
• Industrial Robot Joints: Motor mounting flange for robotic joint actuators
• Automation Equipment: Mounting base for motion control modules
• Production Lines & CNC Equipment: Motor mounting flanges for automated lines and CNC machines

• Professional CNC machining factory specialized in custom CNC machined metal parts with ±0.01mm high precision
• Full services: drawing evaluation, process design, fixture development, prototyping & mass production
• Rich experience in 5-axis CNC complex motor housing & flange parts for automation and robotic sectors
• Full dimensional inspection before shipment, with stable quality control for every batch
• Flexible order volume: single prototype, small batch trial, and large mass production available
• Custom anodizing options to meet anti-corrosion, wear resistance, and appearance requirements
• Fast technical response and competitive quote for your custom CNC precision machining parts

As a professional CNC machining parts factory and reliable manufacturer, we deliver full one-stop custom CNC machined parts services for global B2B clients. Our services cover 3-axis & 5-axis CNC milling, CNC turning, and turn-mill composite machining for custom machined metal parts in aluminum, stainless steel, and other metals.

Our full workflow includes drawing review, DFM analysis, process planning, fixture design, prototype machining, small-batch trial production, and mass manufacturing. We provide post-processing services: precision deburring, polishing, anodizing, passivation, and full dimensional inspection. Our machining accuracy reaches ±0.01mm.

We serve multiple industries: consumer electronics, automation & industrial equipment, semiconductor & vacuum equipment, medical devices, new energy automotive, aerospace & drone, optical & photoelectric, 5G communication, robotics, and instrument & meter industries.

Whether you need motor end cover flanges, robotic flange cavities, optical housings, integrated heat sink housings, fluid connectors, custom fixtures, or non-standard housings, our team can customize CNC precision machining parts according to your 2D/3D drawings. Contact us today to get your free quote for your custom metal machining project.