High Precision CNC Machined Copper Alloy Parts With Electrolytic Polishing For Vacuum Equipment

15+ years of experience on Precision machined parts:

JINGXIN has over 15+ years of experience in custom CNC precision machining services, located in Dongguan City, China.

JINGXIN's professional team adopts reasonable manufacturing processes, solutions, and workmanship to supply high-quality one-stop custom CNC precision machined parts made of stainless steel, aluminum, iron, and more—including high-precision CNC machined copper alloy parts enhanced with electrolytic polishing, which are integral to high-performance vacuum equipment. Leveraging copper alloy’s exceptional conductivity, thermal stability, and airtightness, these components meet the stringent demands of vacuum environments. Advanced CNC machining ensures micron-level precision, crafting complex structures like seal grooves, threaded holes, and contoured surfaces with consistent accuracy—critical for seamless assembly in vacuum systems. This precision minimizes leakage risks, a key factor in maintaining optimal vacuum pressure. Electrolytic polishing further elevates performance by eliminating micro-burrs and oxide layers, achieving ultra-smooth surfaces (Ra 0.02-0.1μm). This reduces gas adsorption and outgassing, preserving vacuum integrity, while boosting corrosion and wear resistance for extended service life. Widely used in semiconductor manufacturing, aerospace, and scientific research, these parts are vital for vacuum valves, chambers and ion sources, ensuring reliability in applications requiring uncompromising vacuum performance.

We focus on:

Custom non-standard CNC precision machining services & milling parts such as fittings, valves, hydraulic components, electric motor parts, transmission and pump parts, sprocket wheels, wear parts on packing machines, and electronic and medicinal pieces.

Our advantage:

1. Advanced Equipment: Operate a world-class facility with a variety of precision CNC machines—Brother, HAAS, Mazak; vertical milling centers and precision milling and turning lathes, including 3-, 4-, and 5-axis models;
2. Complete machining capability in-house: ISO 2768-F/M machining standard tolerance, producing parts in a wide variety of sizes and complexities. Maxi CNC milling capability refers to the below machined lists.
3. Raw material: 100% assurance that the material complies with RoHS and meets design specifications. Material certificates and SGS reports are available for reference if needed. Various materials are available: steel, aluminum, stainless steel, titanium, engineering plastics like PEEK, PC, POM, etc. For more details, refer to the below list.
4. Order quantity: 1+ orders accepted; short-run precision CNC milling & turning and large-volume production are supported;
5. Quick turn: Quick quotes within hours and fast delivery within days, backed by a skilled and professional R&D team;
6. Our customers: Sourced from the EU and North America.

Quality Assurance:

We declare that we will be responsible for our precision machined parts at all times.
1. 100% inspection before shipping, and an inspection shipment report for each piece of precision CNC milling parts is available (ISO quality control throughout the entire production process).
2. We have served Volvo Auto Corp since 2016 as an approved precision CNC milling company in China, with no complaints to date.
3. In case any precision machined part is outside the tolerance or your special specifications, we will remake and deliver it as fast as possible, free of charge.
4. Over the past years, JINGXIN CNC milling company has manufactured thousands of precision CNC machined components for our customers. A 99.9% satisfaction feedback rate drives us to supply more quality precision machined parts to meet customer requests.

 

Factory & Work Shop & Equipment List:

 

 

Equipments list	Brand	Qty	Working Range (mm)	Precision
CNC machines	Huaqun H-1580B	2	1580	0.005mm
	Qiaofeng VMC-1270	2	1270	0.005mm
	Qiaofeng VMC-850 -4 Axis	12	850	0.005mm
	Joint 850	10	850	0.005mm
	(Takan)	4	600	0.005mm
	FEELER 5 Axis	4	850	0.005mm
Milling Machine	Jie yong da	10	760x330	0.01mm
Milling Machine	Bao Feng	1	760x330	0.01mm
Lathe	Dalian	2	600	0.01mm
N/C Turning	Tai Yu	6	500x300	0.005mm
W/C	Xiongfeng	6	500x300	0.005mm
W/C(Mid)	Xiongfeng	1	500x300	0.005mm
Grinding Machine	Wanbang	4	400x200	0.002mm
Laser Marking machine		1

 

We Work With Raw Material.

 

Plastic	Metal	Grade
ABS	Aluminum Alloy	2007/ 2017/5052 /6061/6082/6063/7075 ,.etc.
PC (Polycarbonate)	Brass&Copper	3602 / H59 / H62 / C3600/C38500/,.etc.
PEEK	Stainless steel	SS 301,SS304,SS316L,SS400,SS430,etc
POM	Carbon Steel	A2,Q235,20#,45#.etc
PMMA (Acrylic)	Titanium Alloy
PE	Magnesium alloy
PVC	Zinc alloy
Teflon	Tungsten Carbide	YG8,YG10
Other special plastic	Other	Up on Customer’s request

 

 

Finish and Surface Treatment:

 

Polishing & surface grinding	In house	Electro Plating	Contacted suppliers
Sandblasting & Bead blasting	In house	Anodizing	Contacted suppliers
Painting	In house	Flame/ Vacuum/Nitrided hardness	Contacted suppliers
Screen printing for mark	In house	Hot Galvanized	Contacted suppliers
Laser engraving	In house	Chemical Black & Black Oxide	Contacted suppliers
Powder coating	In house	Vacuum plating	Contacted suppliers

 

Fast Lead Time and Safe Shipping:

 

1. The fastest delivery time is 1 to 2 weeks.

2. Wooden case safe packing, Ship by air or sea.

 

Customer Feedback 

 

 

Application Fields of Precision Machined Parts

 

The Precision machined parts we manufacture are indispensable components in multiple high-end industries.

 

Industry: We provide core Precision machined parts for heavy machinery, automation equipment, industrial robots, etc., such as transmission bearing blocks, precision guide rails, hydraulic valve bodies. For the "high strength and wear resistance" of industrial Precision machined parts, we can use high-strength carbon steel, wear-resistant cast iron and stainless steel to process heavy frame parts. This ensures they run stably in industrial environments with heavy loads and lots of dust.

 

Medical: We produce surgical instruments, titanium alloy joints, endoscope parts and core components of high-end diagnostic equipment. We carry out processing in a clean environment to avoid failure in medical device certification due to precision issues. We achieve micron-level precision, reduce unnecessary waste, lower material costs and ensure biocompatibility.

 

Automotive: We produce auto parts, such as engine blocks, transmission gears, clutch housings, as well as new energy vehicle battery trays and motor housings. Through precise processing, we can not only meet the high-performance requirements of traditional vehicle components, but also adapt to the technical characteristics of new energy vehicles. Moreover, we can achieve stable mass production.