Precision Manufacturing Case: Bike Tail Light Housing

Combination of precision injection molding and structural parts processing

The housing of this bicycle taillight is injection molded with high-strength engineering plastics (such as PC+ABS), combined with highly transparent optical-grade PMMA lenses, to ensure that the overall structure is lightweight and impact-resistant, while ensuring that the light refraction is clear and natural. Every detail size is strictly controlled to meet the tolerance requirements of ±0.02mm, achieving a perfect unity of appearance and functionality.

1. Complex Curved Design & High-Gloss Finish
The tail light cover features multi-surface transitions and sharp contours, requiring extremely high precision in mold design and machining. The transparent lens undergoes fine polishing to achieve a surface roughness of Ra≤0.05μm, ensuring excellent light transmission and a premium mirror finish.

2. High-Precision Assembly & Dimensional Control
The housing, optical components, and electronic modules are assembled with a tolerance control of ±0.05mm, preventing looseness, leakage, and vibration. Strict dimensional inspection ensures batch consistency and product reliability.

3. Advanced Surface Treatments
The black housing adopts a durable matte spray finish, providing scratch resistance and UV protection. The red transparent lens is treated with an optical coating to enhance scratch resistance and anti-fingerprint performance, suitable for long-term outdoor use.

4. Full-Service Manufacturing Support
From DFM optimization and mold development to prototype production and small-batch manufacturing, we offer one-stop precision manufacturing services. This project showcases our strengths in multi-material molding, high-precision machining, and batch consistency management for consumer electronics, smart mobility equipment, and outdoor devices.