Plastic gear molding service

We specialize in plastic gear molding service, delivering custom precision plastic gears and optional assembly solutions to clients across industrial machinery, automotive, consumer electronics, medical devices, and robotics sectors. Unlike finished product traders, we focus exclusively on the design and molding of high-performance plastic gears—leveraging advanced injection molding technology to meet the unique torque, wear, and precision requirements of your applications. Our core strength lies in tailoring plastic gear solutions: from micro-gears for electronic devices to heavy-duty gears for industrial equipment—ensuring every molded gear offers consistent performance, durability, and cost efficiency.

Custom Plastic Gear Features: Structural Design & Material Matching

Our plastic gear molding service is built on precision structural customization, as gear performance directly relies on geometric accuracy and structural optimization. Our engineering team collaborates with you to design gears tailored to your load, speed, and installation needs: For spur gears (the most common type), we optimize tooth profile (involute, cycloidal) and module (0.1–5mm) to minimize noise and maximize torque transmission; For bevel gears (for angular power transfer), we refine cone angles and tooth contact patterns to ensure smooth meshing; For worm gears (for high reduction ratios), we design thread profiles to reduce friction and improve efficiency; For planetary gears (for compact power systems), we optimize gear train alignment and tooth thickness for uniform load distribution. Key custom structural features include: precision tooth profiles (tolerance ±0.01mm), reinforced hubs (for shaft connection), anti-backlash designs (for precision control), and lightening holes (for weight reduction in automotive/robotics applications). Every gear design undergoes FEA simulation to validate strength and durability before molding.

Material matching is critical for plastic gear performance, and our service includes custom material selection based on your application’s operating conditions. For high-wear industrial gears: We use glass-fiber reinforced nylon (PA66+GF 20–40%) or POM (Acetal) for excellent wear resistance and fatigue strength. For low-noise consumer electronics gears (e.g., in printers, toys): We select soft TPE or modified PP for quiet operation. For high-temperature automotive gears (e.g., under-hood applications): We choose heat-stabilized PPS or PEI that withstands 150–200°C. For medical device gears (e.g., in surgical tools): We use FDA-approved PP or PEEK for biocompatibility and chemical resistance. For high-precision micro-gears (e.g., in sensors): We opt for PC or LCP (Liquid Crystal Polymer) for dimensional stability. We also test material compatibility with lubricants (if applicable) to ensure long-term performance.

Key Plastic Materials for Gear Molding & Their Applications

Plastic gear performance is highly dependent on material properties, and our plastic gear molding service offers a range of proven materials tailored to specific application demands:

- POM (Acetal): The gold standard for general-purpose plastic gears—ideal for industrial machinery gears, automotive window regulators, and power tool gears. Offers excellent wear resistance (low friction coefficient 0.15), high fatigue strength, and dimensional stability. Suitable for gears with moderate torque (up to 50N·m) and operating temps of -40°C to 100°C.

- PA66+GF (Nylon 66 with Glass Fiber): For heavy-duty industrial gears—conveyor system gears, agricultural machinery gears, and automotive transmission components. Glass fiber reinforcement (20–40%) boosts tensile strength (up to 80MPa) and wear resistance. Can handle high torque (up to 100N·m) and operating temps of -30°C to 120°C. Requires lubrication for long-term use.

- LCP (Liquid Crystal Polymer): For high-precision micro-gears—electronic sensor gears, robotics micro-drives, and medical device gears. Offers exceptional dimensional stability (shrinkage rate ≤0.5%), high heat resistance (up to 260°C), and compatibility with small module designs (0.1–0.5mm). Ideal for gears requiring tight tolerances and cleanroom production.

- PP (Polypropylene): For low-cost, low-load gears—toy gears, household appliance gears (e.g., in blenders), and light-duty conveyor gears. Cost-effective, chemical-resistant, and easy to mold. Suitable for low torque (up to 10N·m) and operating temps of -10°C to 80°C.

- PPS (Polyphenylene Sulfide): For high-temperature, chemical-resistant gears—automotive under-hood gears, industrial pump gears, and chemical processing equipment gears. Withstands operating temps up to 220°C, resists oils and solvents, and offers good mechanical strength. Ideal for harsh environment applications.

Plastic Gear Molding Process: Features & Advantages

Our plastic gear molding service utilizes precision injection molding technology optimized for gear production, ensuring consistent quality and geometric accuracy. Key process features include: High-precision mold engineering—using hardened steel molds with CNC-machined cavities (tolerance ±0.005mm) and core pins for gear tooth formation; Advanced process control—real-time monitoring of melt temperature (200–320°C, depending on material), injection pressure (80–150MPa), and cooling time to prevent warpage and ensure uniform shrinkage; De-gating optimization—using point gates or sub-gates to minimize residual stress on gear teeth; In-line quality inspection—100% dimensional scanning via optical measuring systems, tooth profile testing, and torque/wear testing for critical applications. We support both small-batch (100–1,000 units) and high-volume (100k+ units) production with multi-cavity molds for cost efficiency.

The advantages of our plastic gear molding service include: Precision guarantee—tooth profile tolerance ±0.01mm and dimensional stability (shrinkage rate ≤1%), ensuring smooth meshing and consistent performance; Cost efficiency—plastic gears are 30–50% lighter and cheaper than metal gears, with injection molding enabling high-volume production at low per-unit costs; Corrosion resistance—plastic gears eliminate rust issues, ideal for wet or chemical environments;Low noise operation—plastic’s inherent damping properties reduce gear noise by 20–30% compared to metal gears; Design flexibility—ability to mold complex gear geometries (e.g., integrated hubs, lightening holes) in one step, eliminating post-processing.

Value-Added Assembly for Molded Plastic Gears

To complement our plastic gear molding service, we offer custom gear assembly solutions—integrating molded gears into ready-to-install sub-assemblies. Examples include: assembling gear trains with shafts and bearings for industrial machinery, integrating micro-gears with motors for consumer electronics, and packaging sterile medical gear sub-assemblies in ISO 7 cleanrooms. Our assembly team uses custom jigs and fixtures to ensure precise gear alignment (critical for performance) and conducts final functional testing (torque, speed, noise) to validate assembly quality. This turnkey service streamlines your production workflow, saving you time and labor costs associated with in-house assembly.

As your trusted plastic gear molding service provider, we prioritize understanding your unique application requirements—from load and speed to environmental conditions. Whether you need a single custom gear design or high-volume production with assembly, our expertise ensures every plastic gear is engineered for optimal performance and durability. Contact us today to discuss your plastic gear project and experience the difference of working with a specialized molding partner.

We are plastic mold maker and can provide custom mold service, we can make injection molds, blow molds, rotational molds and die-casting molds.

For custom injection molds, we can provide professional custom injection molding services. Usually Plastic injection mold manufacturing Molding are manufactured using injection molding technology. The mold materials for injection molds can be chosen from P20, 718, S136, H13 and so on. The mold material reflects the mold life and product material requirements.

For parts that require blow molding production, we can also provide professional custom blow molding services.

Plastic injection mold manufacturing Injection Mould making

1.We communicate product design according to samples/drawings and your requirements.

2.After the product design is confirmed, we carry out the mold design, we provide all kinds of injection molds, blow molds, silicone molds, die-casting molds services.

3.Material procurement, steel cutting and mold basic tools.

4.Mold assembly

5.Mold inspection, tracking and controlling mold processing.

6. We will inform you the date of mold trial and send you the sample inspection report and injection parameters together with the sample.

7.Your instruction and confirmation of shipment.

8.Prepare the mold before packing.

Plastic injection mold manufacturing molding Specification

1. Professional manufacturer, design, production injection mould and stamping mould quality control

2. rich export experience plastic injection mould and stamping mould

3. Reasonable price of design mould

4. Cavities: single or as per your requirements cavity

5. Treatment: S45C Pretreat>25Hrc,And Nitriding

6. Mould Steel: Cavity ,Core and slide: P20 ,2738,2136 available Moldbase :LKM available

7. Standard:DEM ,HUSKY,available

8. Hot runner: according to your demand

9. Life time: >300 Thousand Times

10. Package: Plywood case, anti-rust paint

Mold design：

Information you need to provide us

1. If you have drawings, 2D drawings, 3D drawings (preferably in STEP format).

2. If there are no drawings, you need to provide specific length, width, height and weight information. (It’s best to send us samples)

3. Should the mold be sent to your country, or leave the mold in our factory and we will help you produce the product.

4. Mold material requirements, cavity number requirements (you can tell us about the size of your injection molding machine)

5. Product material requirements and product quantity. (You can tell us about the use of the product and we can give you suggestions)

Transaction process:

Mold testing：

Once the mold is complete, I do a mold test. It usually takes about 3-5 days to complete. We need to assemble the mold, adjust the pressure data of the machine, and try production. We need to check whether there are problems during the normal production of the mold and make modifications.

Product packaging

Packaging according to your needs

1.By air ,it takes 3-7 days for delivery .The goods can be shipped by DHL ,Fedex ,UPS .

2.By sea ,the delivery time is based on your port .

To South East Asian Countries takes about 5-12 days

To Middle east countries takes about 18-25 days

To European countries takes about 20-28 days

To American countries takes about 28-35 days

To Australia takes about 10-15 days

To African countries takes about 30-35 days.

Factory

Video-1: (Factory Video)

Video-2: (Injection Molding)

Video-3: (Blow molding)

Video-4: (Blow molding)

Video-5: (Roll molding)

Customer satisfaction is our most important goal. We focus on communication and cooperation with our customers, always pay attention to their needs and provide quick response and quality customer service. Our injection production mold factory is committed to establishing long-term relationships and ensuring that our customers receive the best after-sales service during the purchase and use of our products, and we will definitely do our best to solve any problems for our customers.

FAQ

1. Who are we?

We are based in Zhejiang, China, start from 2014,sell to North America(30.00%),Southern Europe(10.00%),Northern.

Europe(10.00%),Central America(10.00%),Western Europe(10.00%),Mid East(10.00%),Eastern Europe(10.00%),South America(10.00%). There are total about 51-100 people in our office.

2. How can we guarantee quality?

Always a pre-production sample before mass production;

Always final Inspection before shipment.

3. What can you buy from us?

Mould,Plastic Product, Metal Product,Dental Product,CNC machining.

4. Why should you buy from us not from other suppliers?

Ningbo P&M Plastic Metal Product Co., Ltd. We main do all kinds of 3d design, 3d printing and plastic metal molds tooling and products. We have our own engineer and factory. One-stop supply:3d design - 3d printing - mold making - plastic injection.

5. What services can we provide?

Accepted Delivery Terms: FOB,CFR,CIF,EXW,FCA,DDP,DDU;

Accepted Payment Currency:USD,EUR;

Accepted Payment Type: T/T,L/C,PayPal,Western Union,Escrow;

Language Spoken:English,Chinese,Spanish,French,Russian.

6. What are the characteristics of your service?

1. Your inquiry related to our products or prices will be replied within 24hours.

2. Welltrained and experienced staffs to answer all your enquiries in fluent English.

3. Offering the support to solve the problem in the application or selling period.

4. Competitive prices based on same quality.

5. Guarantee samples quality same as mass production quality.