German 
English BLDC Motor
Electronic Controllers - High Efficiency BLDC Motor from SGMADA
BLDC motors are commutated by electronic controllers, which replace the mechanical commutator and brushes found in traditional brushed motors. This advanced design significantly enhances both the lifespan and efficiency of the motor. Since 2015, SGMADA has been dedicated to developing and producing high-performance brushless motors. Our standard product line offers a variety of brushless motors ranging from 3V to 48V, with power outputs up to 100W.
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What is a BLDC motor?
Compared with traditional DC Brushed motors, BLDC motors use electronic commutation instead of carbon brush commutation.
Working Principle of BLDC Motor
- Stator：Stator embedded copper wire winding. The stator generates a rotating magnetic field through an electronic controller.
- Rotor：Permanent magnets are installed on the rotor to form a fixed magnetic field.
- Electronic commutation:The electronic controller controls the on and off of the stator windings through semiconductor switches (such as transistors or MOSFETs) according to the current position of the rotor and the predetermined commutation logic to achieve current commutation.
- Position detection: Hall sensor or encoder detects the rotor position and feeds the signal back to the controller.
Core advantages of BLDC Motor
▨ Long Lifespan
▨ High effiency
▨ Low Noise
▨ Precise control
▨ Higher power density
Customized BLDC Motor Options
- Magnet
- Rotor Core
- Shaft
- Hall Board
- Stator Core
- Housing
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Where We Add Value
Motor and gearbox desgin based on your requirements
SGMADA focused on designing motor and gearbox more than 20 years.
We are committed to designing products that are more efficient, more cost-effective and of more stable quality.
Our ultimate goal in designing is to serve our customers.
- Reduce costs and increase efficiency
- Reasonable structural design
- Quick response
Improvement of automation equipment
SGMADA believes that automated equipment will bring about a huge leap in production capacity.
We insist on investing 20%-30% of our annual profits in automation equipment.
Automation equipment can not only improve the production efficiency of products, but also reduce the production cost of motors and gearboxes.
ISO9001 & TS16949 strict quality management system
SGMADA has established a complete quality management system to ensure that product quality continues to meet standards.
Our quality management system follows the basic principles of IATF 16949 & ISO 9001.
- Implement strict control requirements for important and special characteristics of product
- Input customer demand, output customer satisfaction
- Focus on defect prevention
- Focus on process control
A trustworthy team means Quality
Our company culture builds a trustworthy team.
Focus on the cultivation of team values - integrity, responsibility and professionalism.
Team communication and collaboration – We encourage open communication so that everyone’s ideas and opinions can be heard.
Learning and improvement – We encourage team members to continue learning and constantly improve their professional skills.
Positive atmosphere – We believe that only a united, trustful and positive team can consistently pursue excellent product quality.
Frequently Asked Questions
1. What are the main differences between BLDC motor and DC brushed motors?
BLDC motors use electronic controllers for commutation, eliminating mechanical brushes and commutators, resulting in higher efficiency and longer lifespan. Brushed motors use mechanical brushes and commutators.
2. How do you calculate the power of a BLDC motor?
The basic formula for calculating the output power of a BLDC motor is:
Pout(W) = T(N·m) × ω(rad/s)
where T is torque and ω is angular velocity.
3. What is the role of Hall sensors in BLDC motors?
Hall sensors provide position feedback, enabling precise speed and position control, making them suitable for high-precision applications.
4. Should I choose an inrunner or outrunner BLDC motor?
Choose based on space and performance requirements. Inrunner motors are compact and suitable for high-speed and tight-space applications, while outrunner motors offer higher torque, suitable for high-torque applications.