| Power | Stall Torque | Weight(KG) |
| 250-500 | 75 | 4.2 |
Precision CNC Machined Motor Parts
-- Steady & Reliable Manufacturer --
Micron Precision: The Core of High-Efficiency Electromechanics
In the world of electric motor manufacturing, the difference between an average product and a world-class drive unit is measured in microns. Precision CNC machined motor parts are the fundamental building blocks of efficiency, silence, and durability. At HENTACH, formerly known as Hengtai Motor, we have spent 30 years perfecting the art of subtractive manufacturing. Within our 9,000-square-meter campus, we house a massive array of advanced CNC machine tools, including 4-axis and 5-axis machining centers, high-speed lathes, and precision grinding machines. This investment in technology allows us to maintain absolute control over the geometry of critical components such as motor axles, rotor carriers, and stator hubs. When a motor axle is machined to a tolerance of 0.005mm, the bearings seat perfectly, friction is minimized, and the motor operates with the whisper-quiet performance that our brand is famous for.
Our CNC processing is not an isolated step; it is the final refinement of our 500-ton die-casting output. By combining the speed of die-casting with the precision of CNC machining, we produce parts that are both structurally dense and geometrically perfect. For example, our motor axles are first forged or cast from high-strength 40Cr alloy steel and then precision-ground to ensure that the bearing surfaces are perfectly concentric with the magnetic air gap. This level of electromechanical synergy is vital for achieving the 50,000-mile lifespan that we have historically proven in our long-term durability tests. Without precision machining, even the best electrical design will suffer from vibration, heat buildup, and premature mechanical wear.
Furthermore, our CNC workshop provides the flexibility required for modern OEM and ODM projects. We can quickly iterate on designs, adjusting shaft lengths, mounting patterns, or gear interfaces to meet the specific needs of our B2B partners. This "Rapid Precision" capability is supported by our ISO 9001 certified quality management system, which utilizes CMM (Coordinate Measuring Machine) technology to verify every critical dimension. Whether we are producing a custom rotor for a 1000W drive or a specialized end-cap for a miniature medical motor, HENTACH provides the engineering depth and manufacturing capacity to deliver parts that meet the world’s most stringent standards. Our 30-year heritage of "Hengtai" excellence is built into every micron of every part we machine.
CNC Machining Capabilities and Standards
| Processing Capability | Technical Standard | Material Compatibility |
|---|---|---|
| Machining Tolerance | ± 0.005 mm (Micron Level) | All Structural Metals |
| Surface Roughness (Grinding) | Ra 0.4 - 0.8 | Axles and Bearing Seats |
| Max Turning Diameter | Ø 450 mm | Large Hub Motor Housings |
| Axis Configuration | 3-Axis, 4-Axis, and 5-Axis CNC | Complex Geometry Actuators |
| Axle Material Processing | 40Cr / 35CrMo / Stainless Steel | High-Tensile Strength Components |
| Concentricity Requirement | < 0.01 mm | High-Speed Rotor Stability |
| Threading Standards | ISO / Metric / NPT / Custom | Universal Compatibility |
| Inspection Tools | CMM / Laser Scanners / Digital Calipers | 100% Dimensional Accuracy |
| Surface Hardening | Induction Hardening / Nitriding | Increases Wear Resistance |
| Production Capacity | 50,000+ Units per Month | Scalable B2B Supply Chain |
Critical Applications for Precision Components
Precision CNC machined parts are the heart of High-Performance E-bike Hub Motors, where they ensure that the magnetic rotor spins in perfect harmony with the stator. This is especially critical for motors used in high-speed applications (Class 3 e-bikes) where any imbalance can lead to dangerous vibrations at 45km/h. Additionally, our machining services are widely utilized in the Robotics and Automation industry. In this field, actuators and joints require parts with zero "play" or backlash to achieve precise positioning. Our ability to machine complex magnesium and aluminum housings is a key reason for our success in these high-tech markets.
- Custom Motor Axles for specialized e-bike frame dropouts.
- Precision Rotor Carriers for high-torque 1000W vehicle drives.
- Miniature Actuator Housings for surgical and medical robotics.
- High-Precision Bearing Sleeves for industrial grade motors.
- Aerospace-grade mounting brackets for drone propulsion systems.
The Strategic Value of Precision Manufacturing
The primary advantage of partnering with HENTACH for CNC parts is Vertical Accountability. When you source a motor from us, every precision part is made under one roof. We don't blame a third-party supplier for a bearing failure or a noisy gear; we take 100% responsibility because we machined those parts ourselves using our 30 years of electromechanical heritage. Our use of 500-ton die-casting followed by high-speed CNC machining ensures that our parts are significantly stronger and more accurate than those made by simple casting or manual turning. This translates to a more reliable product and a stronger brand reputation for you.
Furthermore, our Advanced Surface Treatments, such as micro-arc oxidation, are applied after the CNC process to ensure that even the most complex machined features are protected from corrosion. This level of finish is essential for motors used in extreme environments, such as coastal regions or industrial chemical plants. By choosing HENTACH, you are leveraging an ISO 9001 certified facility that has proven its durability through motors that exceed 50,000 miles of operation. Our precision isn't just a technical spec; it is a financial advantage, reducing your warranty costs and increasing your product's lifecycle. We provide the professional-grade engineering that modern B2B partners demand.
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 Precision CNC Machined Motor Parts Manufacturers and China Precision CNC Machined Motor Parts 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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