CNC Milling - GZ Vacuum Casting (Xiamen) Group Co., Ltd.

Advanced Precision CNC Milling Services – China Top CNC Milling/Milled Parts Manufacturer

Looking for low cost CNC milling parts with unparalleled quality? GZ Metal Manufacturing Co., Limited is a professional China CNC company provides superior precision CNC milling services with advanced machines including CMC milling center and milling machining centers from the general 3-axis to 5-axis and accomplished machinists. Our experienced operators proficient in CAD (computer-aided design) and CAM (computer-aided manufacturing) programs are always finding the best way to produce the highest quality CNC milled parts & components for clients.

With strong capabilities and extensive experiences, we can provide top-grade but cost-effective custom CNC milling services from China including 3-axis CNC milling and 5-axis milling for high-speed CNC manufacturing, rapid prototyping, and precision CNC milling and turning. Our high-quality rapid CNC milling products are involved in the field of automation design, lockset, automobile parts machining, machinery milling, defense industry, medical equipment, lighting parts machining, etc. Send your inquiry or drawing fast to get an online CNC quote.

CNC Machining Standards (DIN ISO 2768-1(1991-06)
Tolerance class	tolerance(mm)
	Metal (ISO 2768-F)							Plastic (ISO 2768-F)
	0.5 to 3	Over 3 to 6	Over 6 to 30	Over 30 to 120	Over 120 to 400	Over 400 to 1000	Over 1000 to 2000	0.5 to 3	Over 3 to 6	Over 6 to 30	Over 30 to 120	Over 120 to 400	Over 400 to 1000	Over 1000 to 2000
F	±0.05	±0.05	±0.1	±0.15	±0.2	±0.3	±0.5	±0.05	±0.05	±0.1	±0.15	±0.2	±0.3	±0.5

2.1 General Tolerances For Shape And Position

General tolerances for shape and position (DIN ISO 2768-2(1991-04)
Tolerance class	tolerance(mm)
	Straightness and Flatness						Verticality				Symmetry
	10	10 to 30	30 to 100	100 to 300	300 to 1000	1000 to 3000	to 100	100 to 300	300 to 1000	1000 to 3000	to 100	100 to 300	300 to 1000	1000 to 3000
H	±0.02	±0.05	±0.1	±0.2	±0.3	±0.4	±0.2	±0.3	±0.4	±0.5	±0.5

What is CNC milling and how does it work

CNC milling (Computer Numerical Controlled Milling) is a CNC machining process that involves removing material from a workpiece by rotating and moving a cutting tool, such as a milling cutter, and positioning the workpiece correctly to produce or complete a custom CNC machined object. CNC milling technology can be used to shape a part from start to finish, preferably with features or definitions as a secondary or finishing process to machined parts. Milling tools can be placed horizontally or vertically, but due to the rapid development of CNC milling machines, they can be moved in multiple axes, up to 5 axes, allowing more cutting items to be moved in addition to the repositioning of the workpiece.

CNC Milling Service Capabilities

With decades of experience and expertise in , we provide OEM milling services and products involving precision milling, thread milling, metal milling, plastic milling, and more.
CNC Milling Center Six advanced CNC machines:
CNC Milling Center Number: 6
Axis Number: 3 or 5 Axis
Product Size 3 Axis Milling Machine: Up to 500 x 500
Product Size 5 Axis Milling Machine: Max Ø 300

CNC Milling Operations (Types) – What Does A CNC Mill Do

CNC milling service, one type of CNC machining service, is ideal for manufacturing CNC milled parts with high accuracy and tight tolerances in prototype and small/large batch production, which achieved through the following common CNC milling operations.

Plain Milling: also called surface or slab milling, refers to the milling operation utilize plain milling cutters with teeth on the periphery to perform the cutting, the axis of rotation of the cutting tool is parallel to the workpiece surface.
Face Milling: the operation use milling cutters have teeth both on the periphery and tool face, the rotating axis of cutting tool is perpendicular to the surface of the workpiece，generally for producing flat surfaces and contours.
Form Milling: uses form cutting tools or fly cutters for specific purposes, including convex, concave cutters, typically for creating irregular surfaces and contours like curved surfaces.

Steel 4130: 4130 steel is a chromium-molybdenum alloy steel that is classified as being low carbon. It has a density of 7.85 g/cm3 and benefits from heat treatment hardening. It combines excellent strength and weldability with steel abrasion and impact resistance. While it is easy to mill and work both hot and cold in the annealed stage, it becomes substantially more difficult to work after the steel has been hardened. Additionally, 4130 steel is readily welded. Typical applications of 4130 steel are bearings, vehicle parts, gears, structures, cutters, etc.
Steel 4140: 4140 steel is a low alloy steel that contains chromium, molybdenum, and manganese, known for its toughness, high fatigue strength, and torsional strength. Steel 4140 is extremely similar to 4130 but contains more carbon, increasing its strength and hardening qualities. The inclusion of chromium and molybdenum tends to provide additional mechanical benefits on 4140 steel over ordinary steel. It is more brittle than standard steel. Thin-walled pressure tanks, spindles, and high-strength bolts are all examples of applications.
Steel 1018: 1018 steel is a low carbon mild steel that has excellent ductility, toughness, and strength characteristics. Most welding methods are compatible with 1018 steel. 1018 is general-purpose steel that gives exceptional case hardening and high surface hardness to parts such as worms, dogs, pins, liners, machinery components, special bolts, ratchets, chain pins, oil tool slips, tie rods, anchor pins, and studs. It is used to enhance the operations of drilling, milling, threading, and punching.
Steel A36: A36 steel is a frequently used structural steel alloy in the United States. A36 is available in a range of shapes and sizes, including plates, structural shapes, bars, girders, and angle iron. A36 is a material that is easily welded using any welding method. A36 is low-carbon steel, which makes it easy to machine, weld, and shape, making it particularly useful as a general-purpose steel. It also means that heat treatment has little impact on A36 steel.

CNC Machining Standards (DIN ISO 2768-1(1991-06)
Tolerance class	tolerance(mm)
	Metal (ISO 2768-F)							Plastic (ISO 2768-F)
	0.5 to 3	Over 3 to 6	Over 6 to 30	Over 30 to 120	Over 120 to 400	Over 400 to 1000	Over 1000 to 2000	0.5 to 3	Over 3 to 6	Over 6 to 30	Over 30 to 120	Over 120 to 400	Over 400 to 1000	Over 1000 to 2000
F	±0.05	±0.05	±0.1	±0.15	±0.2	±0.3	±0.5	±0.05	±0.05	±0.1	±0.15	±0.2	±0.3	±0.5

2.1 General Tolerances For Shape And Position

General tolerances for shape and position (DIN ISO 2768-2(1991-04)
Tolerance class	tolerance(mm)
	Straightness and Flatness						Verticality				Symmetry
	10	10 to 30	30 to 100	100 to 300	300 to 1000	1000 to 3000	to 100	100 to 300	300 to 1000	1000 to 3000	to 100	100 to 300	300 to 1000	1000 to 3000
H	±0.02	±0.05	±0.1	±0.2	±0.3	±0.4	±0.2	±0.3	±0.4	±0.5	±0.5

Advanced Precision CNC Milling Services – China Top CNC Milling/Milled Parts Manufacturer

What is CNC milling and how does it work

CNC Milling Service Capabilities

CNC Milling Operations (Types) – What Does A CNC Mill Do

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