0.01mm Tolerance Aluminum Ring Flange with Turn-Mill Single Setup and Custom Non-Standard CNC Machining

This precision aluminum ring flange is machined by Dongguan Changxinda Precision Technology Co., Ltd., a specialized CNC machining factory established in 2008. Every ring starts from a reviewed drawing and 3D model, passes a DFM check, and is produced on 4-axis / 5-axis machining centers and turn-mill compound lathes. The result is a connection and sealing ring held to ±0.01 mm on critical bores, faces and hole positions — the tolerance demanded by vacuum, optical, semiconductor and aerospace assemblies.

A flange ring is only as good as its geometry. The inner and outer diameters are turned in the same setup as the bolt hole pattern, so concentricity and the bolt circle are locked together and never re-chucked out of alignment. Sealing faces are fly-cut flat and parallel to control gasket preload, and every ring is verified on a CMM before packing.

• Ultra-PrecisionDrawing in, quote in 24 hours
• ±0.01 mmBore, face and bolt-circle position
• Turn-Mill ProcessSingle-setup 4-axis / 5-axis machining
• Minimum Order1 piece — no tooling charge, no setup fee

Precision is built into the route, not inspected in at the end. Each aluminum ring flange follows a controlled eight-stage process:

1. Drawing review & DFM: STEP / IGES / SolidWorks / 2D PDF checked for tolerances, material and manufacturability before quoting.
2. Material selection: Aluminum 6061 / 6063 / 7075 with mill certificates traceable to the batch.
3. CNC programming: CAM toolpaths and fixture design to hold ±0.01 mm on the critical features.
4. Turn-mill machining: OD, ID, faces and bolt-hole pattern cut in a single setup for true concentricity and perpendicularity.
5. Deburring & edge break: Controlled chamfers protect sealing surfaces and operator safety.
6. Surface treatment: Mirror polish, clear or color anodizing, per drawing.
7. CMM inspection: Full dimensional verification with a first-article report.
8. Protected packing: Foam and anti-rust wrap for export.

Standard catalog sizes are only the starting point. We build to your drawing — custom diameters, thickness, bolt-circle count, threaded or counterbored holes, keyways, lug bosses and surface finishes. Send a 2D drawing or 3D model and our engineering team returns a manufacturability review, tolerance feedback and a quote, usually within 24 hours. Because the ring is machined to order, there is no tooling charge and the minimum order is a single piece for prototypes.

Many of our customers work on parts they cannot show the market. We sign an NDA before engineering review, restrict drawings to the assigned programming and machining team, and never display or reuse customer geometry. Tooling, fixtures and programs built for your part stay dedicated to your program, and surplus or reject parts are scrapped on request. Your design stays yours.

Changxinda runs 90+ staff across a plant established in 2008, with multiple turn-mill lathes, 4-axis and 5-axis machining centers, and a dedicated QC lab. With 200+ served customers and 50–60% of output exported, we plan capacity by program so repeat batches ship on a predictable schedule: 3–7 days for prototypes, 7–14 days for small batches and 14–30 days for mass production, with rush handling for urgent lines.

One shop, ten industries. The same tolerance and inspection standard applies whether your ring lands in a phone, a vacuum chamber or a robot joint:

• Consumer ElectronicsPhone / tablet / laptop housings, heat sinks, camera brackets, VR/AR headset structural parts, smart wearable shells
• Automation & Industrial EquipmentAutomation fixtures, jigs, module frames, transmission sliders, motor mounts, sensor housings, assembly line components
• Semiconductor & Vacuum EquipmentVacuum chambers, vacuum fittings, precision bases for semiconductor equipment, thermal and insulating parts, inspection tooling
• Medical EquipmentSurgical instrument bases, medical testing instrument housings, endoscope accessories, medical aesthetic device structural parts (medical-grade aluminum / stainless steel)
• AutomotiveNew-energy motor housings, battery end plates, sensor brackets, headlamp structural parts, modified parts, hydraulic valve blocks
• Aerospace & UAVAircraft structural parts, drone frames, landing gear accessories, aviation instrument housings (lightweight precision parts)
• Optics & PhotonicsOptical lens barrels, lens mounts and bases, light source heat sinks, camera module brackets, inspection optical platforms
• Communications5G heat dissipation cavities, filter parts, signal adapter structural parts, communication equipment housings
• RoboticsRobotic arm joint parts, robot bases, reducer housings, AGV structural parts
• Instruments & MetersTesting equipment housings, precision gauge bases, flow meter parts, laboratory equipment accessories

• ±0.01 mm on bore, face and bolt-circle position
• Turn-mill single-setup machining for true concentricity
• Aluminum 6061 / 6063 / 7075 with mill certificates
• Mirror-finish flat, parallel sealing faces
• Custom bolt patterns: 4 / 6 / 8 / 12 / 16 holes or to drawing
• Through, threaded or counterbored hole options
• Anodizing, polishing and custom surface finishes
• NDA and IP protection available before engineering review
• CMM inspection with first-article report
• From 1-piece prototypes to scheduled mass production
• ISO 9001:2015 certified quality system