Contact Us 
Insert Molding High-Strength Electronic Precision Parts
This overmolded injection-molded housing component for micro motors is integrally formed from modified engineering plastics via precision insert/overmolding process. It integrates metal terminals, mounting holes and motor cavity structures, combining high strength, insulation and dimensional stability. It is a key protection and support component for micro motors, solenoid valves and other electromagnetically driven components.
- Forming Process: Precision Horizontal Injection Molding (including insert/overmolding)
- Forming Accuracy: ±0.05mm
- Material: Glass Fiber Reinforced PA6/ABS (Customizable flame retardant/temperature resistant modified materials available)
- Surface Treatment: Black Matte Injection Molding
- Temperature Resistance Range: -30℃~+105℃
- Production Capabilities: Mold development, small batch trial production, mass production
- Structure Form: Integrated motor cavity, embedded metal terminals, mounting holes, positioning clips
- Application Form: Micro motor housings, solenoid valve coil bobbins, electromagnetically driven component protective parts, small electronic device housings
Get Free Quote 
Injection molding is designed for high consistency and stable volume production. With a mature production system and controlled processes, KT maintains dimensional accuracy and visual quality across batches, minimizing issues such as warpage, shrinkage, and color variation. For applications requiring scalable production and assembly compatibility, injection molding delivers reliable structural integrity and consistent appearance—ensuring efficient and controlled product delivery.
Injection Molding Process
- Mold development: Design precision injection molds based on product structure, including terminal positioning, overmolding and cooling systems
- Material preparation: Dry modified engineering plastics to control moisture content and prevent molding defects
- Overmolding: Place metal terminals into the mold, form at high temperature and pressure, controlling injection pressure and temperature to achieve firm coating of terminals by plastic
- Post-treatment: Remove gates and flash, cool and set, inspect surface defects and terminal bonding strength
- Performance testing: Dimensional inspection, terminal pull-out test, insulation resistance test, high and low temperature cycle testing
Overall process: Precision Overmolding Process, achieving firm bonding between metal terminals and plastic housings by optimizing mold structure and molding parameters, meeting the strict requirements of the electronics industry for component consistency, reliability and insulation performance.
Application Industries
📱 Consumer Electronics Industry
Micro motor housings, small equipment solenoid valve bobbins, smart home electromagnetically driven component accessories, consumer electronic precision injection-molded parts
🏭 Industrial Automation Industry
Automation equipment solenoid valve housings, industrial control module motor accessories, sensor electromagnetically driven component housings, automation system plastic parts
🚗 Automotive Electronics Industry
Automotive electronic micro motor housings, on-board equipment solenoid valve accessories, new energy vehicle electronic control component injection-molded parts
🧪 Other Applications
Small electromagnetic equipment protective parts, solenoid valve coil bobbins, equipment mounting accessories, complex structural injection-molded parts
Injection Molding Process Advantages
- Overmolding One-Time Forming: Metal terminals and plastic housings are formed in one pass with strong bonding, avoiding loosening, poor contact and tolerance accumulation caused by secondary assembly
- Complex Structure Realization: Complex structures such as motor cavities, terminal overmolding, mounting holes and positioning clips can be integrally formed without additional processing
- Customizable Material Performance: Can be modified through flame retardancy, temperature resistance and insulation to meet different electronic equipment requirements for insulation, temperature resistance and flame retardancy
- High Dimensional Consistency: Precision molds and stable molding processes ensure consistent dimensional tolerances of mass-produced products with strong interchangeability, suitable for automated assembly lines
- Cost-Effective: Injection molding is suitable for mass production with low unit cost, and can directly form black matte surfaces, reducing post-processing steps
- Excellent Insulation Performance: Engineering plastics have inherent insulation properties, combined with overmolding technology, effectively improving insulation between terminals to prevent short circuits and leakage
Detailed Parameter Table
| Parameter Item | Technical Specification |
|---|---|
| Product Name | Overmolded Injection-Molded Housing for Micro Motors / Electromagnetically Driven Component Parts |
| Main Material | Glass Fiber Reinforced PA6/ABS (Customizable flame retardant/temperature resistant modified materials available) |
| Forming Process | Precision Insert/Overmolding |
| Forming Accuracy | ±0.05mm |
| Surface Treatment | Black Matte Injection Molding |
| Temperature Resistance Range | -30℃~+105℃ |
| Terminal Bonding Strength | ≥300N (Pull-Out Test) |
| Insulation Resistance | ≥100MΩ (500V DC) |
| Flame Retardant Rating | UL94 V-0 (Customizable on request) |
| Production Capabilities | Mold development, small batch trial production, mass production |
| Working Conditions | Use inside electronic equipment, high and low temperature environments, protection and support for electromagnetically driven components |
