Discover our primary range of custom-designed micro-gears, plastic injection-molded components, and planetary motor gearboxes engineered for quiet, high-torque, and long-life application performance.
Modern micro-mechanisms require an unprecedented combination of high power density, compact envelope geometry, and ultra-quiet operating profiles. Sourcing and engineering departments across North America, Europe, and Asia are transitioning away from heavy metal powertrains to high-performance thermoplastic gears, engineered composites, and hybridized planetary gearboxes.
According to recent industry forecasts, the demand for precision gears under 30mm in diameter is expanding exponentially, driven by breakthroughs in IoT-enabled smart locks, surgical hand tools, personal mobility mechanisms, and consumer micro-appliances. In these industries, even a minor variation in gear tooth concentricity can lead to acoustic resonance, accelerated back-lash wear, and system failure. Sourcing directors require suppliers who can deliver tight-tolerance injection-molding (AGMA Class 8-10) with verified scientific testing data.
By using special engineering polymers like PEEK (Polyetheretherketone), POM (Polyoxymethylene/Acetal), and Nylon (Polyamide), we manufacture gear teeth with self-lubricating characteristics, low inertia, and high structural elasticity. These technical factors are crucial to damping impact loads and achieving low-noise ratings down to less than 35dB in residential and medical actuators.
TQC Micromotor is a forward-thinking Chinese manufacturer redefining precision motion control in the micro-drive industry. We design and build high-efficiency micro DC and BLDC motors that power next-generation technologies worldwide.
Driven by our core philosophy—Top Quality & Customization—we combine advanced manufacturing tech with flexible engineering to provide global B2B clients with the transparency of a local partner and the cost benefits of a premier Chinese factory. Built to last. Engineered to fit.
Our engineering division specializes in co-developing customized gear configurations and integrated gearboxes that solve specific torque, mechanical footprint, and environmental challenges. By keeping tool-making, molding, assembly, and quality metrics inside our own ISO 9001-certified factory, we maintain complete control over the production timeline and physical dimensions of our output.
Global supply chains rely on China's unique industrial clusters to transition from concept to mass production in fractions of the time required elsewhere. At TQC Micromotor, we maximize this regional efficiency by utilizing a fully localized vertical manufacturing ecosystem.
From raw structural resin selection to final coordinate measurement verifying gear profile tooth accuracy, every step is executed within our facilities. This vertical consolidation eliminates intermediate shipping delays, reduces tooling iteration timelines, and lowers material waste costs. Our clients benefit from high-precision molds built by senior tooling designers, utilizing Japanese Sodick wire-cutting technology, at competitive Chinese production rates.
From initial die parts processing to high-volume injection molding, assembly, and protective packaging, look inside our precision production floor.
Our quality inspection center uses measurement instruments to verify tooth pitch, concentricity, roundness, and torque degradation curves over life cycles.
We engineer gear systems to match the torque load, rotational speeds, and environmental exposures of key industrial segments.
Scenario: Low-voltage automatic door locksets, motorized sun curtains, smart lockers, and automated toilet seat covers.
Our 28mm and 22mm planetary gearboxes are designed to provide quiet operation, high detent torque, and wear resistance in residential installations.
Scenario: Electric ear-scoops, facial cleansers, eye massagers, and micro-fluid pumps.
Using ultra-small motors (such as our 6mm stepper or DC brush gearbox) allows product designers to package high reduction ratios into pen-sized designs.
Scenario: Vending machine dispenses, cellphone display shelves, recliner motor systems, and robot joint actuators.
Our custom POM racks and multi-stage reduction planetary assemblies maintain high torque and precision under continuous duty cycles.
Choosing the correct plastic compound is critical when designing gears for micro-transmission projects. Sourcing directors must balance mechanical fatigue limits, cost parameters, and chemical exposures. Below is an engineering comparison table compiled by our research department to assist in your decision-making process:
A key challenge in molding plastic micro-gears is shrinkage during cooling. Pure resins can shrink by up to 2%, causing dimensional variations that alter the involute tooth profile and lead to gear noise. TQC Micromotor uses flow analysis software to design molds with corrected geometries. This process compensates for shrinkage and maintains tooth spacing tolerances to within a few microns.
Review our answers to common design, engineering, and manufacturing questions for micro gears and motor gearboxes.
We regularly produce micro cylindrical and planetary gears down to a module size of 0.15 Mn. Achieving these tight dimensions requires high-accuracy molds made using Slow Wire EDM and EDM machines, which keep tolerances within the micron range.
We achieve low noise output (below 45dB at 30cm distance) by optimizing gear surface roughness, using helical input stages where appropriate, and choosing self-lubricating thermoplastics like POM. Additionally, we run 100% inspection checks on our gear meshing instruments to catch and eliminate high-spot variations before assembly.
POM is our primary polymer for general gear applications due to its stiffness, wear life, and dimensional stability. Nylon offers higher impact resistance but absorbs more moisture, which can affect gear swelling in humid environments. PEEK is chosen for high-end applications like automotive actuators or power recliner motors, where operating temperatures exceed 120°C and gears must withstand heavy loads.
We specialize in custom OEM engineering. Over 80% of our production runs involve custom gear configurations, shaft modifications, unique gear ratios, and material modifications. Our design team can take your mechanical CAD drawings and optimize the gear profiles to match your load requirements.
We use a complete range of inspection tools, including Coordinate Measuring Machines (CMM) for spatial dimensions, a JE25 Gear Measurement Center to verify gear profiles, Gear Meshing Instruments for rolling tests, and High-Resolution Image Measuring Instruments for quick dimension checks.
For custom plastic injection molds, we complete the tooling design and supply initial samples within 20 to 30 days. For prototype gears, we can use micro-machined POM blanks to deliver functional components in as little as 7 to 10 days.
Explore our low-noise gearboxes and motor drives, built for heavy-duty industrial applications and compact integration needs.
Stepper Motor
