The BLDG series brushless DC electric drum is composed of a brushless motor, a planetary gearbox, and motor accessories. The motor, gearbox, and bearings are all installed inside the drum. The product has the characteristics of high precision in machining parts, stable and reliable operation, low noise, low energy consumption, low temperature rise, high efficiency, strong overload capacity, long service life, and easy use. The product has a compact structure, small space occupation, strong universality, and is suitable for various belt and chain transmission equipment.