Radial Port Housing and Sensor Port Housing with 0.01mm Coaxiality Achieved by 5-Axis Milling for Radial Sensor Ports

A circular housing with radial ports carries sensors, cable glands or fluid fittings through the wall of the bore. The difficult part is not drilling the hole — it is the intersection. A burr left inside the bore scratches a piston, traps a seal or blocks a sensor tip, and a thread cut into a curved wall that is not square to the port axis will leak or cross-thread on assembly.

So the bore is finished first and the ports are machined afterwards with the port axis referenced to the bore datum. We machine a small flat or spot face on the curved surface before drilling, so the thread starts square; the intersection is deburred from inside the bore with a controlled tool rather than by hand at the mouth; and the port position and clocking angle are checked on the CMM after anodize, not before.

• Radial Port HousingCross ports that break into the bore cleanly
• Port Position±0.03 mm height and clocking on the bore datum
• Bore Coaxiality0.01 mm — bore and end faces on one axis
• Order Size1 piece — prototype in 3–7 working days
• Materials6061-T6, 7075-T6, 304 stainless
• QualityISO 9001:2015 · deburred from inside · exporting since 2008

• Material: 6061-T6 standard; 7075-T6 for thin walls with ports; 304 or 316L stainless for coolant and chemical duty; brass for EMI shielding.
• Finish: Type II anodize 10–15 µm clear, black or colour; hard anodize on wear faces; chromate for conductivity; passivation for stainless; laser marking of port labels.
• Ports: single or multiple radial ports, opposing ports, ports at two heights, angled ports, NPT / BSP / metric threads, plain through holes for cable, cross-drilled galleries.
• Body: plain cylinder, flanged base, mounting ears, keyway, O-ring steps, threaded cover, sensor window pocket.
• Size: bore 6 mm to 200 mm, body length 20 mm to 300 mm, wall 1.5 mm to 20 mm.
• Input: STEP, IGES, X_T, DXF, PDF, or a sample housing we measure and re-model.

Port positions reveal how a sensor or a fluid circuit is arranged inside a product, which is often the commercially sensitive part of an instrument design. We sign a mutual NDA before opening any file — ours in English or Chinese, or your own form — and return a countersigned copy before work starts. Only the project engineer, the turn-mill programmer and the cell supervisor can access the file, which sits in a restricted folder rather than on the shop network. No photographs of customer parts are taken for our catalogue or website, customer parts are never displayed or reused as samples, subcontracting requires your written approval, and at program close files and inspection data are deleted or returned with written confirmation.

Dongguan Changxinda Precision Technology Co., Ltd has been machining custom parts since 2008: 15+ years, 90 to 100 staff, 50–60% exported to North America and Europe, 200+ customers served, turnover in the RMB 10–20 million band. The floor holds turn-mill combined centres, 4-axis and 5-axis CNC machining centres and CNC lathes under an ISO 9001:2015 system, producing parts for medical, robotics, automotive, aerospace, automation, laser, LED, lithium battery and precision instrument programs. Turning, cross-port milling, threading, anodize coordination and inspection are all in our own plant in Dongguan.

Housings with radial ports from this plant ship into ten industries. Each line is a category we machine regularly, with the parts customers actually order.

All ten sectors run through the same plant and the same ISO 9001:2015 inspection discipline — only the material, finish and documentation package change.

• Prototype: 3–7 working days after drawing approval, including anodize and thread gauging.
• Small batch 10–100 pcs: 7–14 working days.
• Repeat orders: run from archived programs, soft jaws and threading data; port heights and clocking angles repeat to the same values every time.
• Capacity: 10,000 pieces per month across the plant.
• Visibility: a dated progress note with photographs of your actual housings at boring, porting and inspection.
• Shipping: threads plugged, bore capped, parts bagged, foam-lined export carton, express or air and sea per your forwarder.
• Rush: overtime slots and an express anodize line held weekly; tell us the deadline and we confirm before you order.