Small Precision Gear Injection Mold - Fanstar Empowers The Manufacturing of Micro Transmission Systems

In intelligent wearable devices, medical instruments, office automation equipment and high-end push-pins and other precision products, small precision gear injection molds are the core for achieving silent and reliable transmission. As a manufacturer specializing in export-grade functional component molds, Fanstar has successfully delivered multiple sets of molds with a modulus ranging from 0.2 to 1.0 and a tooth count of 10 to 60. These molds are compatible with high-performance engineering plastics such as POM, PA12, and PPS, with tooth shape accuracy reaching AGMA 8 level or above, meeting the strict requirements of low noise, high wear resistance and long service life.

The key to the design of small precision gear injection molds lies in the precise replication of micrometer-level tooth profiles and the non-destructive ejection process. Fanstar employs slow wire electrical discharge machining combined with mirror surface electro-discharge machining to ensure that the tooth profile tolerance is ≤ ±0.005mm; the mold cavity is made of high-purity S136 or 420 stainless steel, which is then subjected to ultra-finishing (Ra ≤ 0.1μm) and anti-sticking coating treatment to prevent ejection scratches; the gate design adopts point injection or recessed structure, avoiding the tooth root area to prevent the weakening of strength due to the fusion line; at the same time, an integrated constant-temperature cooling and flexible ejection system is integrated to effectively control internal stress and deformation.

In the pen mold field, Fanstar develops multiple sets of planetary gear molds for high-end push mechanisms; in the electromechanical housing mold project, it often integrates an integrated micro reduction gearbox for one-piece molding; and it also has experience in providing clean-grade gear molds for aviation auxiliary devices.

All small-sized precision gear injection molds have passed gear meshing tests, life verification, and full-size CMM inspections. The production pass rate is consistently over 98%.

Choosing Fanstar means choosing a small-scale precision gear injection mold technology partner who truly understands the micro transmission system. With precise manufacturing and engineering verification, each plastic gear is "engaged precisely and operates silently". Welcome to contact us to customize your high-reliability micro transmission injection solution!