Brushless Motor Shaft
introduction
The Brushless Motor Shaft is a high-precision rotating transmission component designed specifically for brushless motors. It is mainly used to stably and efficiently transfer the rotational force inside the motor to the external load. It is widely used in many fields such as drones, power tools, home appliance motors, robots, and electric vehicle accessories.
advantages
1. High-precision machining
The brushless motor shaft adopts five-axis CNC turning, cylindrical grinding and center hole grinding and other precision processes to ensure the stability and consistency of the shaft processing size. Especially in terms of coaxiality control, through high-precision processing equipment and process control, the coaxiality error can be controlled within ≤5μm.
2. High material reliability
The motor shaft is made of stainless steel materials, such as 40Cr, SUS420, etc. The materials are strictly screened and combined with vacuum heat treatment process to give it high surface hardness and core toughness. After testing, the fatigue strength of the shaft can reach more than 600MPa.
3. Excellent surface quality
After processing, the motor shaft is processed by cylindrical grinding and mirror polishing to make the surface roughness reach Ra0.2μm or less, ensuring that the shaft has low friction resistance when used with bearings.
4. Highly customizable
In order to meet the needs of different motor structures and installation methods, the motor shaft supports customized services in various structural forms, including keyways, threads, flat mouths, stepped shafts, special-shaped shafts, double-headed shafts, etc. Customers can provide requirements based on drawings or samples, and the factory can achieve 1:1 mold opening and processing.
applications
1. Consumer electronics
Brushless motor shafts are widely used in small consumer appliances such as electric shavers and hair dryers, and are responsible for power transmission between the rotor and the output components.
2. Smart home appliances
In the brushless motor system of smart home appliances such as household fans and vacuum cleaners, the motor shaft is a key component to achieve high-speed rotation and smooth operation.
3. Industrial automation equipment
Automation equipment such as AGV trolley drive motors and industrial robot joint motors have high requirements for the accuracy and stability of motor shafts.
4. Automotive parts system
Brushless motor shafts are widely used in automotive electric seats, rearview mirror adjustment motors and other parts. Its wear resistance and corrosion resistance can adapt to the complex working environment of the car, ensure the motor's sensitive response and smooth movement, and improve the comfort and safety of the whole vehicle.
company strength
Shenzhen Sanhexing Shaft Manufacturing Co., Ltd. is a private enterprise specializing in the customized production of various precision mechanical hardware parts and non-standard precision shafts. Specializing in the production of stainless steel motor shafts, stepped shafts, knurled shafts, screw shafts, worm shafts, gear shafts, spindles, and high-precision shaft products.
Wide range of product applications: used in automobiles, drones, power equipment, industrial robots, electronic appliances, motors, toys and other industries.
Rich experience: The company has more than 10 years of experience in this field.
Quick response: We promise to respond to your inquiries within 24 hours to ensure that you receive the information and support you need in a timely manner.
Accept ODM/OEM services: The CNC processing series has more than 16 years of experience and can customize and process various special copper and aluminum special-shaped precision parts according to drawings or samples.
Key Performance Requirements
High Precision:
Diameter tolerances typically range within ±0.003mm.
Straightness and concentricity are critical to ensure smooth operation.
Durability:
Designed to endure long operating cycles without significant wear or deformation.
High-Speed Capability:
Brushless motors often operate at high RPMs, so the shaft must be dynamically balanced to handle the resulting stresses.
Surface Finish:
Surface roughness is generally below 0.4μm to minimize friction and wear during operation.
Corrosion Resistance:
Particularly important for outdoor or harsh environment applications.
Manufacturing Processes
Material Selection: Ensures the shaft material is suitable for the intended application.
CNC Machining: Guarantees high dimensional accuracy and surface finish.
Heat Treatment: Enhances hardness and strength while improving fatigue resistance.
Grinding and Polishing: Achieves the desired surface roughness and minimizes friction.
Dynamic Balancing: Reduces vibration and ensures stable high-speed operation.
Surface Coating: Adds an additional layer of wear or corrosion protection.
Market Trends and Demand
The demand for brushless motor shafts is growing rapidly, driven by the increasing adoption of brushless motors in various industries. Factors contributing to this trend include:
● The global shift towards electric vehicles and renewable energy systems.
● The rise of automation and robotics in manufacturing.
● The need for more efficient and compact motors in consumer electronics.
Brushless motor shafts are evolving to meet market demands, with trends focusing on lightweight designs, higher precision, and advanced surface treatments to enhance performance and longevity
FAQ
Q: 1. Is there any dynamic balance test for brushless motor shafts? What standards are met?
A: Yes, we perform dynamic balance test on brushless motor shafts for key dimensions and high-speed applications. Using a dynamic balancer for graded measurement, it can meet the G2.5 or G6.3 balance level (according to ISO 1940 standard), effectively reduce unbalanced vibration during rotation, and is suitable for high-speed motor application scenarios.
Q: 2. Do you support small batch samples? How long is the sample cycle?
A: Yes. We can provide small batch sample services based on customer drawings or samples to facilitate customer assembly and testing. Generally, the sample cycle for conventional structures is 57 working days, and products with complex structures or heat treatment requirements take about 1015 days.
Q: 3. Will the motor shaft be deformed after processing? How to control it?
A: To address the problem of processing deformation, we use multi-pass stress release process and segmented rough and fine processing strategy, and effectively control the deformation of the shaft body through temperature-controlled processing environment, fixture-assisted positioning, etc., to ensure that the product still has good straightness and dimensional stability after fine grinding.
Q: 4. Can the fit tolerances at both ends of the motor shaft be interference fit or clearance fit?
A: Yes. We support a variety of fit tolerance requirements such as H7/h6, H6/h5, and can also be customized according to the assembly method of the customer's bearings, couplings and other accessories to ensure assembly reliability and efficiency.
Q: 5. Do your products have environmental compliance certifications, such as RoHS or REACH?
A: Yes. Our brushless motor shafts can provide materials and electroplating treatment reports that comply with RoHS and REACH environmental regulations according to customer requirements, which are suitable for export to the EU, North America and other markets to ensure that the entire product meets relevant environmental safety standards.
