Precision Plastic Dual Gear

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Precise Injection Molds

Precision Plastic Dual Gear

This precision-engineered dual gear assembly consists of an integrated spur gear (large outer ring) and a pinion gear (central shaft), manufactured via high-precision injection molding technology. It is a core transmission component designed for smooth, efficient power transfer in small motors, gearboxes, automation equipment, and precision motion control systems. As a professional custom plastic gear and precision component manufacturer, we specialize in OEM/ODM solutions, supporting custom gear ratios, module specifications, and material selection to meet your specific transmission performance requirements.

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Core Design & Structural Advantages

Integrated One-Piece Construction: The pinion and spur gear are molded as a single unit, eliminating misalignment, backlash, and assembly errors common in split designs, ensuring long-term operational stability.
High-Precision Tooth Profile: Engineered with a standard module (Module 0.5 / 0.8 / 1.0 available) and precision-cut tooth surfaces, delivering smooth meshing, low noise, and high transmission efficiency.
Central Bore Design: The precision central hole is optimized for shaft mounting, with tight tolerances to ensure coaxiality, reducing vibration and wear during high-speed rotation.
Optimized Gear Ratio: The dual-stage design allows for precise speed reduction or torque increase, adaptable to various drive systems including small appliances, automotive actuators, and industrial robots.
Reinforced Ribbing Structure: Internal ribbing enhances structural rigidity, preventing deformation under load and extending the service life of the gear assembly.

Core Technical Parameters & Tolerance Table

Parameter Category	Standard Specification	Customization Range	Tolerance Requirement
Core Manufacturing Process	Precision Injection Molding	Gear Shaving / Insert Molding Optional	Dimensional Tolerance: ±0.02mm
Base Material	POM (Polyoxymethylene)	PA66-GF, ABS, Engineering Nylon	Compliant with RoHS, REACH
Gear Type	Dual Gear (Pinion + Spur Gear)	Spur Gear, Bevel Gear, Worm Gear	Module Accuracy: Class 7~8
Gear Ratio (Standard)	Customizable (e.g., 10:40, 12:48)	Per Customer Design Requirement	Tooth Profile Tolerance: ±0.01mm
Central Bore Size	Standard φ5mm / φ6mm	Customizable per Shaft Size	Bore Tolerance: H7 (±0.01mm)
Number of Teeth (Pinion)	10T / 12T / 15T	Customizable	Tooth Tip Runout: ≤0.03mm
Number of Teeth (Spur)	40T / 45T / 50T	Customizable	Tooth Profile Error: ≤0.02mm
Working Temperature	-20°C ~ +80°C	High-Temp Materials Up to 120°C	Heat Deflection Temp: ≥150°C
Minimum Order Quantity	2,000pcs	Small-Batch Trial Supported	Lead Time: 7-15 Working Days

Material Selection & Performance Assurance

Material Type	Core Features	Ideal Application Scenarios
POM (Polyoxymethylene)	Low friction, high wear resistance, excellent dimensional stability	High-precision transmission, small motors, automation equipment
Reinforced PA66 (Nylon + GF)	High strength, high rigidity, heat resistance	Heavy-load gearboxes, automotive components
ABS	High impact resistance, good surface finish	Low-load, high-speed precision devices
PA12	Low water absorption, chemical resistance	Outdoor equipment, moisture-sensitive applications

All materials undergo strict quality control to ensure consistent mechanical properties, with full material test reports and traceability available for export compliance.

Application Scenarios

Small Appliances & Home Equipment: Coffee machines, electric toothbrushes, massage devices, and smart home actuators.
Automotive Electronics: Window lifters, seat adjustment motors, and small automotive gearboxes.
Medical Equipment: Lab instruments, diagnostic devices, and portable medical machinery.
Industrial Automation: Robotics, small conveyors, and precision motion control systems.

Customization & Service Support

Full Customization: We support 1:1 mold development based on customer 3D/2D drawings or samples, with free DFM (Design for Manufacturability) analysis to optimize design for cost, performance, and manufacturability.
Rigorous Quality Control: Our production follows IATF 16949 and ISO 9001 quality management systems, with 100% dimensional inspection via CMM and 2D vision systems, ensuring perfect fit and alignment for mass production.
Comprehensive Post-Processing: Offers secondary operations including surface coating, flame retardant treatment, and custom assembly to deliver fully finished, ready-to-install components.
Global Supply Chain Support: Provides flexible packaging, international logistics (sea/air/express), and dedicated customer service to ensure seamless procurement for global clients.

Packaging & Delivery

Packaging: Neutral cartons with EPE foam protection, or custom branded packaging as required, to prevent damage during transit.
Lead Time: Mold development: 15-25 working days; Mass production: 7-15 working days (adjustable based on order quantity).
Payment Terms: T/T, L/C, and other standard international trade terms supported.
Logistics Options: DHL, FedEx, sea freight, air freight, and other global shipping solutions available.