Brushless DC motors (BLDC Motors) are widely used in industrial automation, electric vehicles, fans and pumps, robotics, and household appliances due to their high efficiency, long lifespan, low noise, and excellent speed control performance. Among them, 24V and 48V BLDC motors are the most common, each suitable for different power and load requirements. This article analyzes common 24V and 48V BLDC motor models, helping engineers and procurement professionals make informed selection and application decisions.
24V Brushless DC Motor Models
24V BLDC motors are typically used in small machinery, light-load robots, pumps, and household appliances. Common models include 42mm and 57mm diameter motor series, with varying lengths and structures providing different power outputs. At 24V, the power range is generally between 20W and 200W, with no-load speeds ranging from 2000rpm to 8000rpm, suitable for precise speed control and light-load applications. These motors are usually paired with a BLDC driver (ESC), supporting PWM speed control and forward/reverse rotation. Some models feature Hall sensors for precise position control. 24V BLDC motors offer high safety due to low voltage, moderate starting torque, and are ideal for small mobile devices and lightweight automation systems.
48V Brushless DC Motor Models
48V BLDC motors are mainly used in electric vehicles, e-bikes, medium-load fans and pumps, industrial robots, and small power tools. Common models range from 60mm to 80mm in diameter, providing larger sizes for higher power output. At 48V, the power range typically spans 200W to 1500W, with wide speed ranges to meet high-power requirements. These motors are usually paired with high-voltage BLDC controllers, supporting PWM speed control, forward/reverse rotation, and current closed-loop control. Some models integrate Hall sensors or encoders for high-precision motion control. 48V BLDC motors excel in efficiency and high power output, suitable for medium to large loads and industrial automation applications.
Selection and Application Recommendations
When selecting a motor, consider load requirements, speed and torque matching, control methods, and operating environment. For light-load or small devices, 24V motors are more suitable, while 48V motors are recommended for medium or high-power applications. Choose appropriate power and speed ratings based on load torque to ensure efficient operation. Determine whether Hall sensors or encoders are needed for precise speed and position control. Additionally, account for operating conditions such as temperature, humidity, and protection ratings to ensure reliable motor performance.
Conclusion
Both 24V and 48V BLDC motors are widely applied in industrial and consumer settings. 24V motors are ideal for lightweight applications, such as small robots and light-load pumps, while 48V motors suit medium to large loads, including electric vehicles, industrial robots, and fans and pumps. Understanding motor models, power ratings, speed ranges, and application scenarios helps engineers and buyers select the right motor for optimal performance and reliability. Choosing the correct voltage level and model not only improves equipment efficiency but also extends motor lifespan, providing dependable power solutions for industrial automation, transportation, and smart devices.