ISO 9001:2015 Certified
Standardized Quality Management
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High-precision multi cavity mold manufacturing and multi cavity injection molding manufacturer in China. Delivering consistent quality for high-volume plastic enclosures.
ISO 9001:2015
Certified
Strict NDA
Compliance
RoHS & REACH
Compliant
10+ Years
Injection Molding Experience
View Rally Plastic’s extensive gallery of mass-produced plastic components. You can achieve identical, defect-free components across millions of cycles using our trusted high volume multi cavity molding. These physical samples showcase pristine surface finishes, complex geometries.
Rally Plastic provides a versatile range of multi-cavity configurations to meet your specific production needs. You can select from 2, 4, 8, 10, 12, and 16-cavity molds, or customize an exact cavity count upon request. We also engineer highly efficient family injection molds for your multi-part assembly projects.
Ideal for medium-to-large enclosures, double cavity injection mold offers a perfect balance between tooling investment and production speed, ensuring structural integrity for robust components.
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A 4 cavity mold accelerates time-to-market while keeping tooling costs manageable. Leveraging our tight tolerance multi cavity injection molding services, you guarantee exact dimensional consistency.
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An 8 cavity mold drastically lowers piece part price for high-volume demands. Utilizing advanced multi cavity hot runner injection molding systems, we eliminate material waste.
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For massive volumes of small components, a 16 cavity mold delivers unparalleled capacity. Our +/- 0.03mm tolerance multi cavity injection molding ensures extreme precision across all cavities.
View MoreRally Plastic delivers comprehensive custom multi cavity injection molding services for scalable manufacturing. Our solutions are engineered to drastically reduce your piece part price, ensure consistent part quality, and provide reliable results for high-volume production runs.
Rally Plastic's engineers specialize in advanced multi cavity mold design. We utilize moldflow analysis to guarantee perfect runner balancing, ensuring consistent ±0.01mm tolerance across every single part.
Utilizing advanced CNC machining, Rally Plastic delivers precision multi cavity injection molding tools. We can manufacture custom molds ranging from 2 up to 16 cavities for your need.
Leveraging 80 to 800-ton injection molding machines, our high volume multi cavity molding service ensures a rapid 15-20 days production turnaround.
Rally Plastic protect your investment in our climate-controlled, dedicated storage room for your multi-cavity injection molds. Prevents rust and damage, keeping your tools instantly production-ready.
To maximize tooling life, we provide regular preventative maintenance for your core and cavity injection molding tools. Routine tuning ensures peak efficiency over millions of cycles.
Rally Plastic is a trusted high volume multi cavity molding manufacturer delivering scalable solutions. Our expert mold manufacturing for plastic injection guarantees rapid cycles, strict tolerances, and exceptional mass production efficiency.
Partner with a high volume multi cavity molding manufacturer like Rally Plastic, you immediately unlock massive production scale. By utilizing advanced multi cavity hot runner injection molding systems, your cycle times are drastically reduced. Producing plastic parts using multi-cavity molds typically takes only 15–20 days.
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With our tight tolerance multi cavity injection molding services, you receive parts that match your designs flawlessly. Because we strictly enforce +/- 0.03mm tolerance multi cavity injection molding standards, you avoid dimensional variations across cavities, ensuring a zero-defect experience for your team.
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Your tooling budget is a critical investment. When evaluating multi cavity vs single cavity injection molding, scaling up to a multi-cavity tool drastically reduces your long-term unit cost. We help optimize your multi-cavity injection molding cost with durable, high-yield molds that maximize the return on investment.
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Rally Plastic designs and manufactures advanced multi cavity injection molds with a standard mold manufacturing time of 20 to 30 days. Engineered for massive scalability, our robust steel molds guarantee over 1,000,000+ shots for your high volume multi cavity molding projects. Detailed specifications for our production-grade tooling can be found in the table below.
To ensure absolute uniformity across all parts, we utilize advanced moldflow analysis for perfect runner balancing. Whether you require an 4-cavity or a 16-cavity tool, your precision mold injection precision maintains a tight tolerance, eliminated dimensional variations across different cavities.
| Specification Index | Standard / Parameter |
|---|---|
| Mold Base | LKM, DME, HASCO standard |
| Cavity & Core Steel | Class 101/102 Tool Steel: NAK80, H13, 718H, P20 |
| Mold Life | 1,000,000+ Shots (Dedicated for continuous mass production) |
| Runner System | Cold Runner / Hot Runner (Valve Gate, YUDO, INCOE, Mold-Masters) |
| Cavity Options | 2, 4, 6, 8, 10, 12 up to 16 Cavities |
| Machining Tolerance | Tooling down to ±0.01mm (Part Tolerance ±0.03mm) |
Not sure how many cavities you need? Rally Plastic's multi cavity injection mold solutions scale perfectly to match your production demands. From medium runs to massive volumes, our precision injection mold manufacturing services ensure high quality plastic parts by balancing tooling cost and part price.
| Cavity Configuration | Part Size | Part Volume | Part Weight / Mass | Typical Applications |
|---|---|---|---|---|
| 2 Cavity Mold | Large | > 200 cm³ | 150g – 1000g+ | Large plastic enclosures, automotive plastic door handle housings, plastic AC grills. |
| 4 Cavity Mold | Medium to Large | 100 cm³ – 200 cm³ | 50g – 150g | Medical plastic device housings, plastic structural brackets, plastic medium-sized cases. |
| 8 Cavity Mold | Small to Medium | 50 cm³ – 100 cm³ | 20g – 50g | Plastic consumer electronics cases, plastic hand-held devices, plastic car components. |
| 16 Cavity Mold | Small | 10 cm³ – 50 cm³ | 5g – 20g | Small structural plastic parts, plastic electronic connectors. |
Production Volume: 50,000 – 100,000 pieces
Machine Tonnage: 120T – 300T
When to Choose: Choose a 2-cavity mold when you need to minimize initial capital investment while validating a new market. It is your safest option for new product introductions (NPI) or medium-to-large plastic enclosures, allowing you to launch quickly without tying up your budget in heavy tooling.
Production Volume: 100,000 – 500,000 pieces
Machine Tonnage: 200T – 400T
When to Choose: Opt for a 4-cavity configuration when you want to strike the perfect balance between upfront tooling costs and long-term piece part prices. It is ideal when your project scales up and you need to keep your supply chain agile while significantly lowering unit costs.
Production Volume: 500,000 – 1,000,000 pieces
Machine Tonnage: 300T – 600T (Requires hot runner integration)
When to Choose: Select an 8-cavity mold when you are scaling up established, high-demand plastic parts to drastically increase profit margins. You should choose this setup when you have steady high-volume orders and need to slash cycle times for a rapid payback period.
Production Volume: 700,000 – 1,200,000 pieces
Machine Tonnage: 350T – 700T (Balanced hot runner system recommended)
When to Choose: Choose a 12-cavity mold when your annual production demands exceed standard 8-cavity output, but a 16-cavity tool exceeds your current machine tonnage capacity or budget. It is the optimal bridge configuration to scale up mid-to-high volume production while maintaining precise thermal and pressure balance across the mold.
Production Volume: 1,000,000+ pieces
Machine Tonnage: 400T – 800T+
When to Choose: Invest in a 16-cavity strategy when your goal is to secure the absolute lowest piece part price for massive volumes. This is your best choice when manufacturing small, high-precision components, ensuring you never face supply chain bottlenecks during peak market demand.
Whether you need custom injection molds for enclosures across various industries or high-volume multi cavity injection molds for precision parts, Rally Plastic provides tailored tooling solutions to scale your production efficiently. Automotive plastic parts, electronic plastic housings, plastic packaging closures, and plastic industrial components are the multi-cavity injection molding industries we commonly serve.
Secure your supply chain for structural brackets and interior clips. Our custom multi cavity injection molding services ensure strict ±0.03mm tolerances, guaranteeing flawless assembly for your high-volume automotive production lines.
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Eliminate geometric deviations in micro-components. By leveraging advanced core and cavity injection molding, you achieve identical pin alignments and secure fitments, drastically reducing scrap rates for your connector assemblies.
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Accelerate your time-to-market for smart device enclosures. Utilizing optimized multi cavity hot runner injection molding, you can eliminate cosmetic defects and maintain perfect surface finishes with multiple options.
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Fortify your heavy-duty equipment assemblies. Our durable steel tools ensure your gears and brackets are manufactured with extreme structural integrity, making high volume multi cavity molding highly cost-effective.
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Scale up your closure production rapidly. Through expert multi cavity mold runner balancing techniques, you achieve equal melt flow, preventing short shots and ensuring perfectly sealed caps for millions of cycles.
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Lower your piece part price for appliance control panels. When evaluating multi cavity vs single cavity injection molding, our high-yield tooling drastically boosts your daily output and overall profitability.
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Standardized Quality Management
Eco-Friendly & Safe Polymers
Verified China Factory
Your IP & CAD Drawings are Safe
Certified Engineering Plastics
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You can select from a wide variety of premium plastics for your high volume multi cavity molding projects. Rally Plastic provides expert injection molding services for multiple materials, including ABS, PC, PP, PA, PC/ABS, PEEK, and more, ensuring your custom enclosures and components achieve perfect dimensional consistency.
| Material | Advantages & Properties | Typical Applications (Enclosures & Parts) |
|---|---|---|
| ABS | Impact-resistant, Dimensionally stable, Low shrinkage | ABS Computer Mouse Enclosures, ABS Router Housings, ABS Keyboard Covers |
| ASA | UV-resistant, Heat-resistant, Impact-resistant | ASA Outdoor Camera Enclosures, ASA Smart Home Hub Covers, ASA Antenna Housings |
| PA (Nylon) | High strength, Heat-resistant, Wear-resistant | PA Power Tool Enclosures, PA Industrial Switch Covers, PA Motor Housings |
| PC | Heat-resistant, Impact-resistant, Optical clarity | PC Medical Device Enclosures, PC Tablet Protective Cases, PC Instrument Housings |
| PP | Cost-effective, Chemical-resistant, UV-resistant | PP Small Appliance Enclosures, PP Battery Casings, PP Electronic Control Boxes |
| PC/ABS | Impact-resistant, Heat-resistant, High rigidity | PC/ABS Laptop Enclosures, PC/ABS Game Console Shells, PC/ABS Monitor Covers |
| PEEK | Heat-resistant, High strength, Chemical-resistant | PEEK Medical Sensor Enclosures, PEEK Aerospace Housings, PEEK High-Temp Connectors |
| PMMA (Acrylic) | Optical clarity, UV-resistant, Impact-resistant | PMMA Display Screen Covers, PMMA Smart Device Lenses, PMMA Clear Control Panels |
Achieve the perfect balance of strength, aesthetics, and cost. ABS provides predictable shrinkage rates, making it the ideal resin for tight tolerance multi cavity injection molding. Building a precision multi cavity mold for ABS parts ensures zero-defect mass production for your high-quality automotive enclosures and structural components.
Engineered for demanding structural applications. Material options include PA6, PA66, and Glass-Fiber Reinforced (PA+GF). Nylon delivers exceptional wear resistance and mechanical strength. We utilize advanced moldflow analysis to guarantee flawless precision when creating a multi cavity mold for PA parts in your core and cavity injection molding tooling.
When extreme impact resistance and toughness are non-negotiable. PC offers outstanding thermal stability for heavy-duty applications. Our engineering team excels in developing a multi cavity injection mold for PC parts, preventing short shots and ensuring crystal-clear or durable housings through multi cavity hot runner injection molding.
Drive down your procurement costs while maintaining reliability. PP is a highly versatile resin known for its excellent chemical resistance. Its superb flow properties make it the ultimate choice for scaling up through a robust multi cavity mold for PP parts, utilizing our custom multi cavity injection molding services.
Rally Plastic's advanced inspection laboratory is equipped to validate every dimensional and structural property of your precision plastic components. Every mold undergoes rigorous CMM inspection, and upon request, 100% of your injection molded parts can be verified through 2D vision measurement, CCD visual inspection, drop testing, salt spray testing, and plastic tensile testing.
Eliminate human error and surface flaws during high-speed production. Rally Plastic's automated CCD visual inspection machines scan every batch of your multi-cavity injection molded parts in real time, instantly filtering out flashes, short shots, and cosmetic defects across all cavities.
Prevent assembly line discrepancies caused by cavity variations. We utilize advanced CMM inspection for multi cavity molds and parts to verify your tight tolerance components against CAD models, enforcing strict ±0.03mm precision across every single production run.
Achieve high-speed non-contact measurement for complex 2D profiles. Rally Plastic's optical 2D vision measure machines analyze intricate contours, hole diameters, and wall thicknesses on your precision injection molded parts, guaranteeing complete geometric compliance before shipment.
Experience a seamless transition from your initial design to high-volume mass production. By centralizing your project, streamlined custom multi cavity injection molding services eliminate multi-vendor risks, accelerate your product launch timeline, and significantly reduce your long-term piece part prices.
3D Printing
Runner Balancing
& T1 Sampling
High-Volume Output
Once your 3D files are approved, our engineering team crafts your initial samples in 20 to 30 days. We rigorously test your mass-produced plastic parts to ensure perfect dimensional stability, tight ±0.03mm tolerances, and exceptional uniformity across every single cavity.
Secure your supply chain with a trusted high volume multi cavity molding manufacturer in China. Rally Plastic ensures that whether you order 10,000 or 1,000,000 units, your high-volume injection molded parts arrive exactly as they left our factory—pristine and ready for immediate assembly.
When shipping millions of parts, packaging is just as critical as manufacturing. We eliminate transit damage by utilizing heavy-duty export cartons, custom-layered blister trays, and scratch-resistant PE bags to immobilize each unit. Experience truly damage-free delivery for your custom multi cavity injection molding services, guaranteeing that every single piece meets your strict quality standards upon arrival.
Get your first batch of precision plastic components delivered rapidly for urgent testing before kicking off full-scale mass production.
The perfect balance of speed and cost-efficiency. Ideal for medium-volume injection molded enclosures and fast-tracking your critical product launches.
This is the most economical global logistics solution for scaling your mass-produced plastic parts and continuous high-volume orders.
Rally Plastic operates 60+ advanced machines, including 5-Axis CNC machining equipments, 45+ high-precision injection presses, and 10+ automation and auxiliary units, such as robotic arms, mold temperature controllers, and granulators. We have mold manufacturing workshop, injection molding workshop, surface treatment workshop, quality inspection laboratory, and assembly workshop.
Raw Material Warehouse
5-Axis CNC Machining Equipment
Mold Storage Warehouse
Injection Molding Workshop
Injection Production Lines
Quality Inspection
High-volume Injection Molded Parts
Assembly & Packaging Workshop
Located in Ningbo, Zhejiang, Rally Plastic is a leading China plastic injection molding manufacturer with 10+ years of OEM experience. Supported by a complete team with fluent English communication, we specialize in high-volume custom plastic parts manufacturing for global clients.
Find answers about tooling ownership, production capabilities, materials, lead times, and our injection molding process.
Multi-cavity tooling exponentially increases output per cycle, drastically reducing the overall machine time required for large-scale production. By integrating advanced multi cavity hot runner injection molding systems, cold runner waste is eliminated and plastic melt flow is highly optimized. This reduces pressure drops and significantly shortens cooling phases. Ultimately, scaling up to high volume multi cavity molding lowers the cost per part, maximizes machine utilization rates, and allows engineers to meet tight supply chain deadlines without sacrificing batch-to-batch consistency.
The initial investment for complex tooling involves several critical variables, including cavity count, mold base dimensions, and the complexity of the runner system. When evaluating multi cavity vs single cavity injection molding, the increased upfront expense is driven by extensive CNC machining, hot runner integration, and complex cooling channel layouts. However, this initial multi cavity injection molding cost is rapidly offset during mass production. Precision engineering ensures uniform melt distribution, minimizing long-term scrap rates and significantly lowering the piece part price.
Thermal management dictates both cycle time and structural part quality. In complex layouts, uniform heat dissipation prevents differential shrinkage and severe warpage. Conformal cooling channels are often engineered into the steel inserts to closely follow the exact geometry of the parts. Efficient heat transfer directly determines the success of custom multi cavity injection molding setups by accelerating material solidification. Superior cooling network design is a cornerstone of professional multi cavity plastic injection services, maximizing speed while locking in exact dimensional specifications.
Achieving extended tool life requires selecting premium hardened tool steels. For extensive production cycles, S136 or H13 stainless steels are optimal choices, offering superior wear resistance and thermal conductivity. These robust materials prevent premature wear of the core and cavity in injection molding, ensuring millions of defect-free cycles. When engineering a high precision multi cavity injection mold, selecting high-grade steel minimizes maintenance downtime, preserves micro-tolerances across all cavities, and withstands the continuous injection pressures inherent in mass production.
Ensuring uniform melt distribution requires geometrically balanced runner systems and meticulous rheological calculations. Engineers utilize advanced moldflow analysis and multi cavity mold runner balancing techniques to guarantee equal pressure, temperature, and shear rates at every gate. This scientific approach prevents short shots in outer cavities and overpacking in central ones. Proper thermal management and precise gate sizing are critical to maintaining tight tolerance multi cavity injection molding, ultimately ensuring identical part weight, density, and cosmetic appearance across the entire run.
We process premium engineering plastics including ABS, PC, PP, PA, etc. equipped with injection molding machines ranging from 100 to 800 tons.
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