Renjie
High Precision Online CNC Milling Services China

Online High Precision Cnc Milling Services

Rinjie is equipped with 3-axis, 4-axis, and 5-axis milling machines to efficiently handle complex, high-precision parts. We offer professional cnc milling service from china with instant online quotations (within 8 hours), superior-quality manufacturing, and fast, reliable delivery.

◉Support for One-Off & small Batch order

◉100 + metal & plastics material avalible

◉Tight Tolerances

CNC Machining CNC Milling CNC Turning Rapid Prototyping Laser Cutting Sheet Metal Fabrication Plastic Injection Molding Surface Finishing

Our CNC Milling Machine Services

Machinable motorcycle parts

3-Axis CNC Machining

For producing parts with 2D or 2.5D features,3-axis CNC milling is the preferred method for producing simple parts that require precision.

Machinable motorcycle parts

4-Axis CNC Machining

4-axis CNC can rotate the workpiece,allowing cnc machining on multiple sides in one setup. It is ideal for cylindrical parts with holes, slots, or features that 3-axis machines cannot efficiently process.

Machinable motorcycle parts

5-Axis CNC Machining

The additional rotation during the 5-axis CNC milling process helps to achieve more complex designs and geometries. The minimum settings reduce errors and enable the desired geometries to be achieved in a single operation.

Why Use Renjie Precision Machinery for CNC Milling Services?

Machinable motorcycle parts

Advanced CNC Equipment and Strong Production Capacity

20+ CNC lathes equipped with advanced 3-axis, 4-axis, and 5-axis machines, combined with experienced production engineers, enable the manufacturing of complex parts. We deliver over 5,000 precision CNC milling components each month, ensuring sufficient capacity to meet your order requirements.

Machinable motorcycle parts

Reliable Service from Quotation to After-Sales

From fast quotations to careful packaging and responsive after-sales support, our sales representatives and engineering team provide end-to-end service. Any finished parts that do not match the drawings will be returned for free modification or remanufacturing.

Machinable motorcycle parts

Expert Problem-Solving for Complex Machining

Renjie has six senior engineers with extensive experience handling challenging CNC milling parts,including parts that other machining factories were unable to process.

Flexible CNC Milling Solutions

Our advanced online CNC machining services offer the flexibility to meet your design needs and development timelines. We produce prototypes, test parts, and low-volume production runs with the speed and accuracy needed for modern product development.

Machinable motorcycle parts

Rapid Prototyping CNC Milling

Renjie offers convenient rapid prototyping services, delivering functional parts with excellent appearance, along with complete surface finishing and post-processing options.

Machinable motorcycle parts

Low Volume CNC Milling

Renjie delivers flexible low-volume CNC milling solutions, providing customers with high-quality parts, fast turnaround, and reliable manufacturing support.

Flexible CNC Milling Solutions

Our advanced online CNC machining services offer the flexibility to meet your design needs and development timelines. We produce prototypes, test parts, and low-volume production runs with the speed and accuracy needed for modern product development.

Metals
Aluminum/Aluminum Alloy Titanium / Titanium Alloy Stainless steel
Steel Alloy Mild steel Copper
Brass Tool steel Inconel
Invar 36
Engineer Plastic
ABS FR4 G-10
Nylon PEEK PEI
PET PMMA (Acrylic) Polycarbonate
Polyethylene Polypropylene PoM (Delrin/Acetal)
PPSU PTFE (Teflon) PVC

CNC Milling Tolerances and Standards

With a wide range of CNC machines, we are able to provide standard tolerance CNC machined parts with the most economical price and super precision machined parts for high-end products.

3-Axis 4-Axis 5-Axis
Maximum Part Size 1300x700x300mm 600x300x200mm 300x300x150mm
Minimum Part Size 3x3x3mm 3x3x3mm 3x3x3mm
General Tolerances ±0.1 ±0.01 ±0.1
Lead Time Generally 15 days, urgent items 3 - 7 days, and we can discuss for large quantities. Generally 15 days, urgent items 3 - 7 days, and we can discuss for large quantities. Generally 15 days, urgent items 3 - 7 days, and we can discuss for large quantities.

Surface Finishing

  • Anodizing

    RENJIE has its own oxidation plant and is a specialist in anodized aluminium, magnesium and titanium. Anodizing not only provides a beautiful appearance color, but also increases the hardness and durability of the workpiece, and in some cases, it’s a more ideal finish than painting.

  • Sandblasting

    Sandblasting sprays fine sand to the workpiece through high-pressure airflow, which can form a unique texture while removing burrs and stains on the surface of the workpiece. Sandblasting can be used as a final treatment, or be prepared for subsequent surface treatment to increase the bond strength between the workpiece and the coating/plating.

  • Painting

    RENJIE has specific painting equipment, which can spray the product from any direction. Thousands of colors can be prepared by experienced sprayers, and the surface effect can be selected from matte, semi-gloss and full-gloss finishes, ensuring that the spraying quality can satisfy customers’ requirements.

  • Powder Coating

    Use professional equipment to spray electrostatic powder on the surface of the workpiece to form a uniform coating with different effects. RENJIE always insists on protecting the ecological environment, and carries out environmentally friendly production on powder coating, so that the entire production process can reach a pollution-free state.

  • PVD

    PVD is an environmentally friendly process. The plated film has the characteristics of high hardness, wear resistance, corrosion resistance, high chemical stability and long life. It can be plated with various film colors and finishes, which greatly improves the appearance of the workpiece.

  • Electrophoresis

    This process can obtain a uniform and smooth paint film on the inner layer, depression, welding seam and other parts of each component, which solves the problem of painting complex-shaped workpieces by other painting methods, and the product has a long-lasting bright color and works well on corrosion resistance.

  • Electroplating

    Electroplating includes vacuum electroplating, UV electroplating, plastic electroplating, and metal electroplating; its technology is widely used, suitable for mass production, and is easier to mechanize and automate production.

  • Passivation

    Passivation has the characteristics of not increasing the thickness of the workpiece and changing the color, improving the precision of the product and the anti-corrosion ability of the metal, and also maintaining the characteristics of the metal surface and increasing its added value.

  • Laser Engraving

    The marked logo and pattern of RENJIE’s laser engraving have outstanding features such as exquisite, clear, beautiful, and permanent, and will not fade or wear due to touch, temperature, etc. Laser engraving can engrave complex patterns and images on metal and non-metal materials.

  • Silkscreen Printing

    RENJIE’s silkscreen printing can be freely adjusted with various inks and coatings, so that the silk printing pattern can achieve a colorful, bright and strong three-dimensional effect. And the printing method can be used in various materials and shapes.

Surface Finishing - Anodizing
Surface Finishing - Sandblasting
Surface Finishing - Painting
Surface Finishing - Powder Coating
Surface Finishing - PVD
Surface Finishing - Electrophoresis
Surface Finishing - Electroplating
Surface Finishing - Passivation
Surface Finishing - Laser Engraving
Surface Finishing - Silkscreen Printing

FAQS

  • Q1: How long does it take to complete a CNC milling order?

    A:Standard production usually takes around 15 days. For urgent orders, we can deliver in 3–7 days.Large-volume orders can be scheduled through consultation — contact us to get started.

  • Q2: Do you provide online instant quotes for CNC milling projects?

    A: Yes! Simply upload your drawings,once we receive your quotation document, our sales representative will reply to your offer within 8 hours.

  • Q3: What Is The Difference Between CNC Milling And CNC Turning?

    A:They are both subtractive manufacturing processes. In CNC Milling, a cutting tool is moved to cut a motionless piece of work. It is perfect to draw complicated, flat, or three-dimensional figures. In CNC Turning, the material is removed as the workpiece turns and a fixed cutting tool cuts the workpiece. This process is most appropriate to the creation of round or cylindrical components.

  • Q4: Which materials can you CNC mill?

    A: Our CNC milling can process the following materials: special steel series, titanium alloy series, tool steel series, stainless steel series, CR steel series, copper material series, aluminum alloy series, PEEK, ABS, PC, acrylic, plastic materials, etc. At the same time, we also provide various materials with heat treatment and surface treatment.

  • Q5: Do you offer low-volume or custom production runs?

    A:Yes. We specialize in low-volume and custom production runs, handling everything from prototypes and small batches to specialized parts. Our team works closely with you to optimize designs, select suitable materials, and ensure precise, high-quality manufacturing—even for complex or hard-to-machine components.

  • Q6: Do you offer low-volume or custom production runs?What tolerances can you achieve with CNC milling?

    A: Standard tolerances are ±0.1 mm (±0.004"). For high-precision parts, we can achieve tolerances as tight as ±0.01 mm (±0.0004").

  • Q7: Do you provide design for manufacturability (DFM) feedback?

    A: DFM analysis of any CNC machining service is free, and we can assist you in optimising your design to achieve cost-effective and high quality manufacturing. Engineers will go through your CAD file and give you a feedback, as well as give optimization recommendations regarding CNC machining where necessary. We aim to make machined parts better and seek to find ways of lowering the machining cost and eventually assist in lowering your unit price.

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