Spiro Gear
Tired of trading company markups, communication gaps, and inconsistent batch quality? Spiro Gear is the transparent, direct-from-source China factory you’ve been looking for. We engineer world-class precision micro drives under strict, repeatable quality control.
Deep industry heritage since 2006, ensuring stable automated production lines and long-term supply security for global OEMs.
Every single motor is subjected to automated dynamic balancing and acoustic tests under real industrial loads before leaving our dock.
From custom shafts to integrated encoders and specialized gearheads, we rapidly prototype solutions that fit your device perfectly.
Our operations are fully compliant with ISO9001, CE, RoHS, and REACH safety standards, ensuring smooth market entry for your products in Europe and North America.
As the global micro-mobility market shifts toward Smart Integration and Higher Power Density, Spiro Gear is at the forefront of motor innovation. Our R&D focuses on three critical pillars for the next generation of Electric Bike Motors:
By utilizing high-permeability silicon steel sheets and advanced copper winding techniques, we achieve energy conversion efficiencies exceeding 90%. Our integrated thermal management systems ensure peak performance even under heavy load during steep climbs.
The future is connected. Our ODM solutions include integrated torque sensors and Hall sensors that communicate seamlessly with modern E-bike CAN-bus systems, enabling smoother pedal assistance and predictive maintenance features.
Reducing unsprung weight is vital for bike handling. Our proprietary planetary gearbox designs offer a 15% reduction in size while increasing torque output by 20% compared to traditional gearsets.
We provide holistic engineering solutions for various sectors within the electric vehicle ecosystem. Our motors are not just components; they are the heart of sophisticated mechanical systems.
Heavy-duty motors designed for cargo e-bikes with 100+ Nm torque requirements, optimized for stop-and-go urban environments.
Robust, IP67-rated motors built for the rigorous demands of scooter-sharing fleets, featuring anti-vandalism designs and long service intervals.
Precision-tuned mid-drive motors that offer a natural riding feel with instantaneous response to cadence changes.
Extending our e-bike tech into AGVs and warehouse robots that require the same durability and efficiency as high-end e-bikes.
Our Shenzhen-based manufacturing hub utilizes Industry 4.0 principles to mitigate global supply chain risks. By integrating vertical production—from gear hobbing to final assembly—we offer our clients shorter lead times and superior cost control.
Our in-house NINGJIANG Machine Tools and CNC centers allow us to maintain tolerances within microns, crucial for the silent operation of e-bike motors.
Automated winding and riveting machines ensure that every motor in a 10,000-unit order is identical to the prototype.
We maintain strategic reserves of rare-earth magnets and high-grade copper, shielding our partners from sudden raw material price fluctuations.
Transparent production process and world-class testing laboratory.






























For multi-national enterprises, procurement is about more than just a low unit price. It's about Total Cost of Ownership (TCO) and Compliance Security. Spiro Gear supports your global footprint through:
We provide comprehensive technical documentation in English and German, including 3D CAD models (STEP/IGES) and performance curves, to speed up your engineering phase.
Our motors meet the stringent safety requirements of EN 15194 for electric-assisted cycles (EPAC), ensuring your bikes are road-legal in the EU.
As a responsible exporter, we adhere to green manufacturing practices, minimizing waste and ensuring all materials are ethically sourced and RoHS compliant.