| Power | Stall Torque | Weight(KG) |
| 250-500 | 75 | 4.2 |
500W High Torque Motors
-- Steady & Reliable Manufacturer --
Dominating the Mid-Range: 500W Power and Torque
For e-bike riders who demand more than just assistance—who need the power to haul heavy loads, climb steep trails, and reach higher sustained speeds—the 500W high torque motor is the ultimate choice. This power tier strikes the perfect balance between the lightweight nature of 250W units and the heavy-duty performance of 1000W drive systems. At HENTACH (formerly Hengtai Motor), we have dedicated 30 years to mastering this specific electromechanical segment. Our 500W motors are not simply "over-clocked" small motors; they are ground-up designs featuring beefier axles, high-density copper windings, and advanced thermal management. Within our 9,000sqm manufacturing campus, we use 500-ton die-casting machines to create the robust housings necessary to contain and cool this high-performance powertrain.
The key to the HENTACH 500W motor is our "High Torque Density" philosophy. By utilizing N42SH-grade neodymium magnets and high-fill oxygen-free copper windings, we produce a motor that can generate peak torques of up to 65Nm. This is essential for Fat Tire Bikes and Cargo Vehicles where the weight of the machine and its load requires a powerful initial push. Our ISO 9001 certified manufacturing process ensures that every motor is dynamically balanced using precision CNC tools, reducing vibration and mechanical stress that can lead to premature failure. This attention to internal geometry is why our 500W motors are known for their "grunt" and long-term durability in the field.
We understand that power creates heat. To combat this, our 500W series features an optimized aluminum-magnesium alloy housing with specialized cooling fins and our proprietary micro-arc oxidation coating. This combination allows for superior heat dissipation compared to stamped-steel alternatives, preventing the thermal throttling that plagues many 500W motors on the market. Our commitment to longevity is legendary; we have motors that have surpassed the 50,000-mile test under significant load. For the B2B partner, this means providing a vehicle that can confidently tackle any terrain. Whether you are building an off-road beast or a heavy-duty delivery trike, our 500W motors deliver the reliable power your customers expect from a world-class manufacturer with a 30-year legacy of innovation.
Technical and Performance Parameters
| Technical Metric | Performance Data | Advantage Group |
|---|---|---|
| Rated Continuous Power | 500 Watts | High Mid-Range Output |
| Nominal Torque | 55Nm - 65Nm | Superior Climbing Power |
| Voltage Compatibility | 36V / 48V / 52V DC | High Performance Versatility |
| Magnet Material | N42SH High-Temp Neodymium | Resists Heat Fade up to 150°C |
| Axle Specification | 14mm Diameter / 12mm Flats | Reinforced for High Torque |
| Internal Gearset | Nylon-Steel Hybrid (Patented) | Durability meets Silence |
| Max Efficiency | ≥ 84% | Optimized for Long Range |
| Cooling Architecture | Passive Fin-Cooled Shell | Maximum Heat Dissipation |
| Weight | 3.5kg - 4.2kg | Balanced Power-to-Weight |
| Sensor Feedback | Triple Hall Sensor Array | Precise Low-Speed Control |
Performance and Utility Applications
Our 500W drive systems are the heart of the Fat Tire E-Bike market. These vehicles require substantial torque to overcome the rolling resistance of wide tires and varied terrain. Additionally, the 500W class is the standard for Electric Cargo Bikes used in the United States and other regions where power limits are more flexible. For a cargo bike carrying 100kg of groceries or children, the 500W motor provides the necessary safety margin to accelerate quickly away from traffic lights and navigate overpasses without straining the rider.
- All-Terrain Adventure E-bikes for off-road exploration.
- Heavy-Duty Delivery Trikes for logistics and couriers.
- Electric Hunting Bikes requiring stealth and high-torque climbing.
- Speed Pedelecs for rapid suburban-to-urban commutes.
- Retro-style Electric Mopeds with high cruising efficiency.
The Engineering Edge of High Torque
The standout advantage of our 500W motors is the Structural Integrity of the Drive Train. We recognize that 500W of power puts significant stress on the internal gearset and the wheel spokes. Therefore, we use our Patented Nylon-Steel Gears to ensure the motor can handle instantaneous peak loads without failure. The steel reinforcement in the gears prevents tooth-stripping during hard acceleration, while the nylon components keep the motor quiet enough for recreational use. This hybrid design is a direct result of our 30-year history as "Hengtai Motor," where we learned to balance mechanical strength with user comfort.
Furthermore, our in-house manufacturing control over the casting and CNC processing means we can offer custom axle configurations and reinforced mounting points for unique frame designs. Our ISO 9001 certified facility ensures that every motor housing is tested for structural soundness before it enters the assembly line. By leveraging our history of durability—including motors that have exceeded 50,000 miles—we provide a 500W solution that isn't just powerful, but practically permanent. When you partner with HENTACH, you are choosing a manufacturer that understands the physics of torque and the necessity of reliability, ensuring your e-bikes are built for the long haul.
Ningbo Yinzhou HENTACH Electromechanical Co., Ltd. was established in 1995. For more than 20 years, we have been committed to the casting and processing of miniature DC motors, hub motors for electric vehicles and motorcycles, and aluminum and magnesium alloys for electric vehicles. At the same time, we have a complete ISO9001 quality control system, mature management system and advanced manufacturing and testing equipment.
HENTACH has an area of more than 9,000 square meters, with a construction area of 5,000 square meters. Currently we have more than 60 sets of various internal production equipment including 500 tons die-casting machines, precision CNC machine tools, laser marking machines, micro-arc oxidation, etc., and another two sets of electric vehicle motor test benches.
As China 500W High Torque Motors Manufacturers and China 500W High Torque Motors Suppliers, HENTACH aims to pursue higher quality and innovation products. With rich experience in motor manufacturing, we are confident with our motor quality as we always use the materials and our own patented nylon-steel gear. We used to set up a price for the customers who use our motors for over 30,000 miles. In the end we find over 50 motors that are used by the customers for over 30,000 miles and some of them even reach 50,000 miles. We appreciate for those customers who are always trust our products, which also encourage us to keep exploring and innovating better motor with quality.

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