Send us your drawings and requirements (CAD files, materials, quantity, tolerances). Our engineering team will review the details and provide a fast, accurate quote.
When it comes to CNC machining, selecting the right manufacturing partner can make all the difference. MQJM stands out not only for its technical capabilities but for the values and professionalism that guide every part we produce. Here's why global customers choose MQJM as their trusted CNC machining supplier. Choosing MQJM means choosing a partner who values your product as much as you do.
At MQJM, we prioritize communication. Our team responds to customer inquiries and technical questions in the shortest time possible, ensuring smooth collaboration at every stage. Whether it's a quotation request, material suggestion, or production update, we keep clients informed and confident.
With years of industry experience, our engineering team goes beyond simply executing designs—we review them in detail. If we discover an issue in the customer's drawing during production, we immediately pause the process, contact the client, and only resume once we receive confirmation. This ensures both efficiency and accuracy, reducing costly mistakes and delays.
We treat each CNC component with the care it deserves. That's why MQJM invests in high-quality, customized packaging to protect finished parts from scratches, dents, or impact damage during shipping. We understand that even a small imperfection can affect function or appearance, so we go the extra mile to preserve the integrity of your product.
Our founder is not only a successful entrepreneur but also a highly skilled engineer who embodies the spirit of craftsmanship. His commitment to quality sets a high standard throughout the company. Every employee at MQJM is trained to uphold these values, resulting in precise, reliable, and flawless CNC parts.
CNC Machining Tolerances
Description | Description |
What is the maximum machining size for CNC turning? | At MQJM, our CNC lathes can handle parts up to 500mm in diameter and 1500mm in length, making them suitable for large shafts, sleeves, and other cylindrical components with high precision requirements. |
What is the minimum machining size for CNC turning? | We are capable of turning small parts with a minimum diameter of 1.0mm, which is ideal for precision components in industries such as electronics and medical devices. |
What is the maximum machining size for CNC milling? | Our advanced CNC machining centers support a maximum travel of 1500mm x 1000mm x 800mm, enabling us to process large structural parts, molds, and custom equipment housings. |
What is the minimum machining size for CNC milling? | MQJM can achieve fine detail machining down to feature widths of 0.2mm and dimensional tolerances within ±0.01mm, suitable for intricate small parts used in precision machinery and automation systems. |
What is the minimum tolerance MQJM can achieve? | Thanks to our advanced quality inspection systems and optimized machining processes, MQJM can maintain machining tolerances as tight as ±0.005mm, meeting the strictest dimensional accuracy demands. |
What are the standard tolerances for CNC machining? | Unless otherwise specified by the customer, MQJM follows ISO 2768-m standards for general dimensional tolerances, ensuring consistent part quality and reliable fit for assembly. |
What surface finishing options does MQJM offer? | We offer a wide range of surface treatments including anodizing, plating (nickel, zinc, chrome), sandblasting, polishing, powder coating, and black oxide to enhance both functionality and appearance. |
How to choose the appropriate tolerance and surface finish? | The best tolerance and surface finish depend on the part's function, assembly requirements, and material type. Our engineering team provides expert recommendations and feasibility assessments based on your project needs. |
CNC machining plays a vital role in the medical manufacturing industry, offering unmatched precision and reliability. Medical components often require extremely tight tolerances—sometimes within microns—to ensure patient safety and product performance. Precision CNC machining delivers the accuracy needed for critical applications, including surgical instruments, orthopedic implants, and diagnostic device components.One of the main benefits of CNC machining is its ability to consistently reproduce complex geometries with minimal variation. This repeatability is essential in producing medical parts that must meet strict regulatory and quality standards. Whether manufacturing titanium bone screws, stainless steel forceps, or plastic diagnostic housings, CNC technology ensures high-quality results every time.CNC machining also supports a wide range of biocompatible materials, including titanium, stainless steel, PEEK, and PTFE. These materials are commonly used in medical devices due to their strength, corrosion resistance, and safety for use within the human body.As personalized medicine grows, so does the demand for custom medical components. CNC machining enables the production of patient-specific parts such as dental prosthetics, orthopedic implants, and surgical guides tailored to individual anatomy. This customization improves comfort, surgical precision, and recovery outcomes.In addition, CNC machining allows for fast prototyping and scalable production, helping medical manufacturers bring innovations to market more quickly.In summary, CNC machining is an essential solution for producing high-precision, reliable, and customizable medical components. With its advanced capabilities and material flexibility, CNC continues to support the evolving needs of modern healthcare.
Aerospace components often require extremely tight tolerances to ensure performance and safety under extreme conditions. CNC machining offers micrometer-level accuracy, making it ideal for producing complex parts such as turbine blades, housings, brackets, and structural components.
CNC machines can process a wide range of aerospace-grade materials, including titanium alloys, aluminum (e.g., 7075, 6061), Inconel, stainless steel, and carbon fiber composites. These materials are essential for balancing weight reduction with high strength and thermal resistance. Whether it's a single prototype or large-scale production, CNC machining ensures every part is identical to specification. This is crucial in aerospace, where consistency affects safety, performance, and regulatory compliance. CNC technology enables quick transition from CAD design to finished part, which significantly reduces development cycles for new aircraft systems and components. This agility is essential for innovation and time-sensitive aerospace projects. CNC machining allows for efficient production of highly complex or lightweight structures, such as internal channels, thin-walled features, or intricate surfaces, which would be difficult or costly to produce using other methods. CNC machining can meet the stringent requirements of AS9100 and ISO certifications, ensuring parts meet aerospace industry standards for quality, safety, and traceability.
Automotive parts such as engine blocks, gear components, brake systems, and transmission housings demand tight tolerances and complex geometries. CNC machining ensures these parts are produced with exceptional accuracy and repeatability, enhancing performance and safety. CNC machining allows automotive manufacturers to quickly turn 3D designs into functional prototypes. This shortens development cycles, accelerates testing, and supports faster time-to-market for new vehicle models or parts. For custom vehicles, performance upgrades, or aftermarket parts, CNC machining is ideal for producing low to mid-volume runs without the need for expensive tooling. It also enables design flexibility and frequent iterations with minimal cost impact. CNC machines can process a variety of materials used in the automotive industry, including aluminum alloys (e.g., 6061, 7075), steel, titanium, and plastics. This enables the production of both lightweight and high-strength components based on performance needs. CNC machining supports high levels of customization—perfect for producing personalized car parts, motorsport components, and limited-edition performance accessories where design uniqueness matters. Automotive parts must endure extreme mechanical and thermal stresses. CNC machining provides superior surface finishes and structural integrity, with rigorous quality control ensuring each part meets strict durability and performance standards.
Robotic systems require highly precise and tightly fitted components to function smoothly—such as joints, housings, gears, and arms. CNC machining delivers the micron-level accuracy necessary for reliable movement, balance, and control in robotic mechanisms. Robotics often involves custom solutions and prototype development. CNC machining is perfectly suited for low-volume and one-off parts without the need for expensive molds or dies, offering both speed and design flexibility. From lightweight aluminum for robotic arms to durable stainless steel for load-bearing components, CNC machining can work with a broad range of materials. It also supports advanced plastics like PEEK and Delrin for insulation and lightweight applications. Speed is essential in robotic development. CNC allows fast turnaround on prototypes, enabling engineers to test designs and make quick improvements. This accelerates innovation and reduces time to market for robotic systems. CNC machining provides excellent surface finishes and dimensional consistency, which reduce friction, wear, and the need for secondary processing in moving parts. As robotics grows in industrial and consumer applications, CNC machining enables easy scaling from prototypes to full production runs. Its repeatability ensures consistent quality across units, especially in modular robotic systems.
Agricultural machinery—such as tractors, harvesters, seeders, and irrigation systems—requires high-performance components that can withstand rough field conditions. CNC machining delivers precise, durable parts like gears, shafts, brackets, and engine components that ensure long-term reliability. Farms often require equipment tailored to specific crops, terrain, or climates. CNC machining enables the quick and cost-effective production of custom components and prototypes, helping manufacturers adapt to evolving agricultural needs. CNC machines can work with tough materials like hardened steel, cast iron, and corrosion-resistant alloys that are essential in agricultural environments. These materials extend the lifespan of equipment exposed to dirt, moisture, and heavy loads. When agricultural machinery breaks down, every hour counts. CNC machining allows for rapid production of replacement parts, minimizing equipment downtime and keeping farming operations on schedule. For agricultural equipment manufacturers, CNC machining ensures consistent, repeatable quality in large production runs. This guarantees part interchangeability and performance uniformity across various machines and product lines. Many farms still operate older or specialized machinery with hard-to-find parts. CNC machining offers an affordable solution for small-batch or discontinued components without investing in molds or large inventories.
Energy systems—such as wind turbines, oil & gas rigs, and power generation units—require complex components like turbine blades, valve bodies, and heat exchanger parts. CNC machining ensures precise geometries and tight tolerances, critical for reliable performance under extreme pressure, heat, or rotational force. CNC machines can process tough, high-grade materials such as Inconel, stainless steel, titanium, and hardened alloys, which are essential in energy applications where durability, corrosion resistance, and temperature stability are non-negotiable. Downtime in energy operations can be costly. CNC machining allows for the fast production of customized or hard-to-source replacement parts, helping minimize downtime and extend the operational life of expensive equipment.
We work with a wide range of materials including aluminum (6061, 7075, 5052), stainless steel, brass, copper, titanium, and engineering plastics like POM and ABS. Each material is selected based on your specific part requirements.