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Ningbo Renjiu Machinery Co., Ltd. is a professional manufacturer specializing in precision hardware parts processing and automated equipment manufacturing. Located in Ningbo, a well-known coastal manufacturing city in China, we integrate design, production, customization and sales, providing one-stop precision machining solutions for global customers.
We are equipped with advanced production equipment and strict quality control systems, committed to high-precision, high-stability and cost-effective mechanical parts and automated equipment.
Precision processing of metal and plastic parts, apply for electrical appliances, automobi
CNC Milling, CNC Turning, Injection Molding, Sheet Metal Cutting and Bending, ensure preci
Professional QC inspector team, full inspection before shipment
Services from Design assistance, DFM report, CNC Machining Processing, Surface treatment.
Product Description: Custom Precision CNC Machining Metal Parts 1. Product Overview Our custom CNC machining parts are precision-manufactured to meet your exact specifications, supporting a wide range of industrial and mechanical applications. From simple turning components to complex milled assemblies, we deliver high-quality metal parts that combine durability, dimensional accuracy, and tailored performance. 2. Available Materials We offer a full selection of high-grade metals to suit your application needs: - Stainless Steel (304, 316, 303, 416, etc.) – Corrosion-resistant, ideal for harsh environments - Brass (C36000, H59, H62) – Excellent machinability, conductivity, and wear resistance - Aluminum (6061-T6, 7075-T6, 5052) – Lightweight, high strength-to-weight ratio, good thermal conductivity - Titanium Alloy (Ti-6Al-4V, Gr5) – Ultra-light, high strength, biocompatible, perfect for aerospace/medical use - Carbon Steel, Alloy Steel, Copper, and other specialty materials upon request 3. Surface Treatment Options Enhance the performance, appearance, and lifespan of your parts with our comprehensive finishing services: - Oxidation (Anodizing for aluminum, black oxide for steel) – Improves corrosion resistance and hardness - Electroplating (Nickel plating, chrome plating, zinc plating) – Adds wear resistance, conductivity, and aesthetic appeal - Nitriding (Gas nitriding, plasma nitriding) – Boosts surface hardness, wear resistance, and fatigue strength - Other finishes: Polishing, passivation, sandblasting, painting, powder coating, and custom treatments 4. Manufacturing & Capabilities - Machining Processes: CNC turning, CNC milling, 5-axis machining, drilling, tapping, grinding, stamping, and assembly - Tolerance Control: Achievable tolerances up to ±0.005mm (0.0002"), with strict quality checks for dimensional accuracy - Prototyping & Mass Production: Support for low-volume prototypes, small-batch orders, and high-volume mass production - Customization: OEM/ODM services available, including custom drawings, 3D models, and tailored solutions based on your unique requirements 5. Key Features & Benefits ✅ High Precision: Strict dimensional control ensures perfect fit and function in your assemblies ✅ Durability: Premium materials and professional surface treatments extend part lifespan ✅ Versatility: Multi-material and multi-finish options suit diverse industries and applications ✅ Cost-Effective: Optimized machining processes reduce waste and production costs ✅ Fast Lead Times: In-house production capabilities ensure quick turnaround for both prototypes and bulk orders ✅ Quality Assurance: 100% inspection with coordinate measuring machines (CMM), optical comparators, and first article inspection (FAI) 6. Common Applications Our custom machined parts are widely used in: - Automotive & transportation - Aerospace & defense - Medical equipment & healthcare - Industrial machinery & automation - Electronics & telecommunications - Hydraulic & pneumatic systems - Marine & offshore equipment - Consumer goods and more 7. Why Choose Us? - Experienced Team: Our engineers and technicians have years of expertise in precision metal machining - Full-Service Support: From design consultation to post-production finishing, we handle every step of the process - Flexible MOQ: No minimum order quantity for most custom projects, supporting small startups and large enterprises alike - Global Export Experience: We specialize in international trade, with reliable shipping and export documentation for TradeWheel buyers worldwide - Customer-Centric Service: We provide responsive communication, detailed order updates, and after-sales support to ensure your satisfaction 📋 Order Information - Customization: Please provide 2D drawings, 3D models (STEP/IGES), or detailed specifications for a quote - Sample Orders: We welcome prototype and sample orders for quality testing before mass production - Lead Time: Typically 3-15 working days (varies by order complexity and quantity) - Packaging: Standard anti-rust packaging with custom labeling options to meet your shipping requirements 💡 Bonus Tips for Your Listing 1. Add Keywords Naturally: The description already includes high-search terms like custom CNC machining , precision metal parts , stainless steel components , and OEM/ODM to boost visibility on TradeWheel.
Product Description We are a professional manufacturer specializing in custom CNC machining services for high-precision aluminum alloy irregular parts. Equipped with advanced 4-axis & 5-axis CNC machining centers, we excel at processing complex-shaped aluminum components with tight tolerances, meeting the stringent requirements of industrial automation, automotive, aerospace, and robotics industries. 🌟 Core Advantages - Multi-axis Processing Capability: Leveraging 4-axis/5-axis CNC milling technology, we effortlessly handle complex 3D geometries, deep cavity processing, and high-precision hole drilling, ensuring dimensional accuracy and consistency for even the most intricate aluminum CNC parts. - Premium Material Adaptability: Expertise in machining various aluminum alloys, including 6061-T6, 7075, 5052, and more. We can optimize material selection based on your project needs for strength, lightweight properties, and cost-effectiveness. - Strict Quality Control: Adhering to ISO 9001 standards, we implement rigorous inspection processes throughout production. Our tolerance control reaches ±0.01~0.05mm, guaranteeing perfect fit and assembly for your projects. - Comprehensive Surface Finishing: Offer a full range of treatments: anodizing (clear/black/colorful), polishing, sandblasting, powder coating, and brushing, enhancing both the appearance and durability of your parts. 🛠️ Service Scope - Custom Processing: Support OEM/ODM services, accepting 2D/CAD (PDF, IGES, STEP) drawings for customization. - Processing Types: CNC milling, turning, drilling, tapping, engraving, and precision cutting for irregular aluminum parts. - Application Scenarios: Widely used in industrial equipment, medical devices, communication electronics, automotive components, and aerospace parts. 🚀 Fast Turnaround & Flexible Service - Rapid Prototyping: 3-7 days for sample production, suitable for design verification. - Mass Production: 10-20 days for bulk orders, with flexible MOQ to meet different business needs. - Confidentiality Assurance: Strict data security management to protect your design intellectual property. We are committed to providing one-stop solutions for custom aluminum CNC machined parts. Contact us with your drawings or requirements today for a free quote! 🔑 Embedded Keywords CNC machining parts, custom aluminum parts, 4-axis CNC machining, 5-axis CNC machining, precision aluminum components, irregular aluminum parts, aluminum alloy machining, CNC milling service, custom fabrication service, high-precision machining, industrial automation parts, automotive CNC parts, aerospace components, robotics parts
Product Description This custom CNC machined titanium alloy shaft is crafted from high-grade titanium materials (including Ti-6Al-4V Grade 5, the industry-standard aerospace-grade alloy) via advanced precision turning and multi-axis CNC machining. Engineered to meet the most stringent industrial benchmarks, these shafts deliver an exceptional strength-to-weight ratio, superior corrosion resistance, and exceptional mechanical stability. Each component is precision-machined to ultra-tight tolerances (up to ±0.001mm), ensuring flawless fit, seamless operation, and long-term durability in critical applications. The polished surface finish not only enhances structural integrity but also minimizes friction during operation—critical for high-performance systems. We provide comprehensive OEM/ODM customization services, with full flexibility to tailor dimensions, lengths, diameters, and surface treatments (such as anodizing, passivation, and protective coating). We can integrate functional features including oil holes, keyways, threads, and tapered ends, and support direct production from customer drawings or technical specifications. Key Features & Advantages ✅ High-Performance Titanium Alloy Core - Unmatched strength-to-weight ratio: Lighter than steel, stronger than aluminum, reducing overall system load without compromising durability. - Industry-leading corrosion resistance: Withstands acids, alkalis, saltwater, and harsh environmental conditions, ideal for marine and chemical-processing settings. - High-temperature stability: Maintains consistent mechanical properties in extreme thermal environments, suitable for aerospace and automotive performance applications. - Biocompatible grade options available, meeting medical and food-grade safety standards. ✅ Uncompromising CNC Machining Precision - Multi-axis CNC turning and milling capabilities enable complex geometric designs, accommodating custom profiles and tight tolerances. - Rigorous quality control, including 100% dimensional inspection, ensures consistency across prototypes and mass production runs. - Customizable surface finishes (Ra 0.8 to Ra 3.2) — from polished to brushed — balance performance, wear resistance, and aesthetic requirements. ✅ Flexible End-to-End Customization - Full customization of size, shape, and length to match specific application needs. - Integrated functional feature design: Drilled holes, precision threads, keyways, splines, and tapered ends, all tailored to your project specifications. - Diverse surface treatment options: Passivation for corrosion protection, anodizing for enhanced durability, or PVD coating for extreme wear resistance. - Fast prototyping lead times and flexible minimum order quantities (MOQ) for both small-batch and large-scale production. ✅ Broad Industrial Application Scope Suitable for high-demand sectors including: - Aerospace & aviation structural components - Medical equipment & surgical instruments - Marine and offshore engineering systems - High-performance automotive and racing parts - Industrial automation and precision machinery - Chemical processing and oilfield equipment Core Technical Specifications - Material: Titanium Alloy (Ti-6Al-4V Grade 5, Grade 2, and custom grade options) - Machining Process: Precision CNC turning, milling, and grinding - Tolerance Range: ±0.001mm to ±0.01mm (fully customizable to project requirements) - Surface Finish: Polished, brushed, passivated, anodized, or custom-coated - Customization Support: Full OEM/ODM services, including reverse engineering and design optimization - Quality Assurance: Material certification provided, with 100% dimensional and functional inspection before shipment Why Choose Us? Backed by years of expertise in precision CNC machining and titanium alloy component manufacturing, we deliver reliable, high-performance solutions tailored to global client needs. Our in-house machining facilities, advanced quality control systems, and dedicated engineering team ensure every product meets international standards and your exact specifications. We offer competitive pricing, flexible production scheduling, and responsive customer support to streamline your procurement process and bring your designs to market efficiently.
Product Description: Custom Precision Stamped Sheet Metal Electronic Chassis / Enclosure Our custom-fabricated sheet metal chassis and enclosures are engineered to deliver robust protection, precise fit, and long-term reliability for industrial, electronic, and telecommunication equipment. Combining high-precision stamping, CNC bending, and professional surface finishing, this enclosure is built to meet the strict dimensional and performance requirements of your most demanding applications. Crafted from premium-grade cold-rolled steel, stainless steel, or aluminum alloy, the unit features a modular internal frame design with reinforced structural ribs to enhance rigidity and impact resistance. The integrated ventilation cutouts and pre-configured mounting slots support efficient heat dissipation and seamless component integration, making it ideal for housing circuit boards, power supplies, and other sensitive electronics. Key Features & Advantages - Precision Stamped & Fabricated Construction Manufactured using high-speed stamping presses and CNC-controlled bending machines, every cut, hole, and form is held to tight tolerances for consistent fit across all units. Clean, burr-free edges and precise alignment ensure smooth assembly and compatibility with standard hardware and components. - Customizable Modular Design This enclosure features a flexible, slot-based internal structure that supports a wide range of configurations, including multiple card slots, drive bays, and accessory mounting points. We offer full customization of internal layouts, cutout patterns, and dimensions to match your exact equipment specifications. - Multiple Surface Treatment Options To meet your functional and aesthetic needs, we provide a complete range of surface finishing services: - Powder coating (custom colors, matte/gloss finishes) - Spray painting - Galvanizing / zinc plating for corrosion resistance - Anodizing (for aluminum models) - Electroplating and passivation These treatments enhance scratch resistance, rust protection, and overall durability in both indoor and outdoor environments. - Excellent Thermal & Environmental Performance Integrated ventilation grilles, fan mounting areas, and optimized airflow paths prevent overheating of sensitive components. The sturdy, sealed construction also offers protection against dust, moisture, and minor mechanical shocks, making it suitable for use in industrial control rooms, data centers, and field-deployed systems. - High Structural Rigidity & Durability Reinforced internal beams and folded-edge design eliminate warping under load, ensuring long-term structural integrity even in high-vibration applications. The enclosure’s robust build supports heavy components and repeated handling during installation and maintenance. - OEM & ODM Support We offer complete custom engineering support, from initial concept drawings and 3D modeling to prototype validation and mass production. Our engineering team can modify dimensions, internal layouts, and surface treatments to align with your product design, branding, and compliance requirements. Typical Applications This versatile sheet metal enclosure is widely used across multiple industries, including: - Telecommunication equipment and 19-inch server rack systems - Industrial automation and control cabinets - Data center networking and server hardware - Electronic test and measurement devices - Power distribution and renewable energy equipment - Medical and laboratory instruments - Industrial computing and embedded systems Quality & Manufacturing Standards All products are manufactured under strict ISO 9001 quality control procedures, with comprehensive inspections at every stage of production: 1. Raw material verification and testing 2. In-process dimensional checks for stamping and bending 3. Surface finish quality inspection 4. Assembly fit and function testing 5. Final packaging and shipping verification We provide detailed material certifications, inspection reports, and compliance documentation to support your quality assurance and regulatory requirements.
Product Description: High Precision 5-Axis CNC Machined Pure Copper Components Our 5-axis CNC machined pure copper components are engineered for demanding industrial applications where precision, conductivity, and durability are non-negotiable. Each part is manufactured using advanced 5-axis machining centers, enabling complex geometries, tight tolerances down to ±0.005mm, and seamless multi-surface processing that traditional machining cannot achieve. Core Specifications & Attributes - Material: High-grade pure red copper (C11000 / T2 copper), with 99.95% minimum copper purity - Machining Process: 5-axis CNC milling, turning, and composite machining - Tolerance: ±0.005mm standard, customized tight tolerance available - Surface Roughness: Ra 0.8 - Ra 3.2 μm (adjustable based on requirements) - Available Size Range: Customized from 5mm to 500mm, tailored to your drawings - Certification: ISO 9001:2015 certified production, full quality inspection reports provided Material & Conductivity Advantages We use premium T2 pure copper as the raw material, renowned for its exceptional electrical and thermal conductivity: - Electrical Conductivity: ≥58.5 MS/m, 101% IACS, far exceeding most copper alloys, ensuring minimal energy loss in power and electronic applications - Thermal Conductivity: ≥401 W/(m·K), enabling efficient heat transfer for cooling systems, heat exchangers, and high-power equipment - Mechanical Properties: High ductility and malleability, with good corrosion resistance to atmospheric and common industrial environments, extending service life Surface Treatment & Customization Options To meet diverse application needs, we offer multiple surface treatments: - Natural Copper Finish: Bright, clean surface with minimal oxidation, suitable for applications requiring direct copper contact - Electroplating: Tin plating, nickel plating, silver plating, or gold plating to enhance corrosion resistance, solderability, and conductivity in high-frequency environments - Passivation: Anti-tarnish treatment to prevent oxidation and maintain surface integrity - Deburring & Polishing: Precision deburring, vibratory finishing, or mirror polishing for smooth, burr-free surfaces Applications & Quality Assurance These copper components are widely used in: - RF and microwave communication equipment - Power distribution and electrical contact systems - Industrial heat sinks and thermal management solutions - Medical equipment and scientific instruments - Aerospace and defense components Every part undergoes rigorous quality checks, including dimensional inspection, material composition testing, and surface finish verification. We provide 100% inspection for critical dimensions and offer full traceability for all orders, ensuring consistent quality for mass production and prototype projects alike.
Energy storage solutions in today's rapidly evolving energy landscape.
We provide high-precision CNC machining services tailored to meet the demanding requirements of modern industries. With advanced CNC lathes and CNC milling machines, we ensure accurate, consistent, and efficient production for both small and large batches. Our machining capabilities support complex geometries and tight tolerances, delivering reliable performance for critical applications.
Materials: We work with a wide range of materials including aluminum alloys, stainless steel, brass, copper, and engineering plastics such as POM, ABS, and PEEK. Each material is carefully selected and processed to ensure durability, strength, and optimal performance based on customer requirements.
Equipment: Our facility is equipped with advanced CNC lathes and high-speed CNC milling machines, enabling us to handle precision turning, milling, drilling, and custom machining processes with high efficiency and accuracy.
Application: Our CNC machined components are widely used in aerospace, medical equipment, automotive precision parts, automation systems, and various industrial applications where quality and precision are essential.
We offer advanced 3D printing solutions to support rapid prototyping and product development. Our services help clients accelerate design validation, reduce development time, and achieve cost-effective production of complex parts with high accuracy and efficiency.
Processing Technologies:
- SLA (Stereolithography): Ideal for high-precision models, smooth surface finishes, and appearance verification. Commonly used for display samples and detailed prototypes.
- SLS (Selective Laser Sintering): Suitable for producing durable and functional parts with excellent mechanical strength, making it ideal for industrial applications.
Materials: We support a wide range of materials including resin, nylon, ABS, stainless steel, aluminum alloy, and other engineering-grade materials to meet diverse project requirements.
Applications: Our 3D printing solutions are widely used for structural verification, functional prototyping, and product development stages. They enable faster iteration, design optimization, and efficient transition from concept to production.
We provide high-quality injection molding services for the efficient production of complex plastic components. With advanced molding technology and strict quality control, we ensure consistent results, smooth finishes, and cost-effective manufacturing for both small and large production runs.
Materials: We process a wide range of engineering plastics including ABS, PC, PP, PA, POM, TPU, and TPE. Each material is selected based on product performance requirements such as strength, flexibility, durability, and heat resistance.
Advantages:
- Excellent surface finish with minimal post-processing
- Capability to produce complex and intricate structures
- High production efficiency for large-volume manufacturing
- Support for two-color molding and overmolding (rubber + plastic)
Applications: Our injection molded products are widely used in electronic housings, home appliance components, medical accessories, automotive interior parts, and various industrial applications requiring precision and durability.
We offer high-quality vacuum casting services for rapid prototyping and low-volume production. This process is ideal for producing detailed, high-fidelity parts with excellent surface finish and material flexibility, making it a cost-effective alternative to injection molding during early-stage product development.
Processing Workflow: Master model creation (typically using SLA 3D printing) → Silicone mold fabrication → Vacuum casting under controlled conditions → Curing and finishing of final parts. This streamlined process ensures accurate replication of original designs with high consistency.
Materials: We use a variety of casting materials including PU resin, soft rubber, and transparent resins, allowing us to simulate different mechanical properties such as rigidity, flexibility, and clarity depending on project requirements.
Application: Vacuum casting is widely used for appearance prototypes, functional testing samples, market validation models, and small-batch production parts. It is especially suitable for industries requiring fast turnaround and high-quality prototype validation before mass production.
We provide precision sheet metal fabrication services for a wide range of industrial applications. With advanced processing equipment and skilled manufacturing capabilities, we deliver durable, accurate, and cost-effective metal components tailored to customer requirements.
Materials: We work with high-quality materials including cold-rolled steel plates, stainless steel, aluminum sheets, and copper plates, ensuring excellent strength, corrosion resistance, and long-term performance.
Processing Capabilities: Our sheet metal services include laser cutting, CNC punching, precision bending, welding, and assembly. These processes allow us to produce complex structures with high accuracy and consistent quality.
Key Features:
- Cost-effective manufacturing solutions
- Flexible production from prototypes to large batches
- Strong structural stability and durability
- High precision with clean finishing
We provide high-precision die casting services for the production of complex metal components with excellent consistency and durability. Our advanced casting capabilities ensure high-quality results suitable for demanding industrial applications.
Molding advantages:
- High dimensional accuracy with excellent surface finish
- Ideal for complex and thin-walled structural parts
- Strong mechanical strength suitable for load-bearing applications
- Efficient production for medium to large batch manufacturing
Application: Our die-cast components are widely used in automotive parts, LED heat sinks and radiators, industrial connectors, motor housings, and other precision-engineered industrial products.
Working with Ningbo Renjiu Machinery has been a great experience. Their precision machining quality is outstanding, and every product meets our strict technical requirements. The team is responsive and delivers on time, which is crucial for our operations. We highly recommend them for reliable and efficient manufacturing solutions.
We have been sourcing customized mechanical parts from Renjiu Machinery for over a year. Their attention to detail and ability to manufacture exactly according to our drawings is impressive. The pricing is competitive, and quality consistency makes them a trusted long-term partner.
Renjiu Machinery stands out for its advanced equipment and professional approach. Their automated solutions have significantly improved our production efficiency. Communication is smooth, and their commitment to quality is evident in every shipment we receive.