YBK3系列煤矿井下用隔爆型三相异步电动机为轴向通风全封闭自扇冷鼠笼型隔爆型三相异步电动机，是我国取代YBK系列而新设计的更新换代的煤矿井下用隔爆型电机基本系列，它具有效率高、转矩大、过载能力强，噪声低、振动小、温升裕度大、性能良好、安装维修方便、寿命长等优点，隔爆结构合理、使用安全可靠，外形美观等优点。产品技术水平达到国内先进水平。

YBK3 series flameproof three-phase asynchronous motors used in underground coal mines are axial-ventilation, fully enclosed, fan-ventilated, and squirrel-cage motors, which are newly designed by our company to supersede the series of YBK and constitute the basic series of flameproof motors used in underground coal mines. This series motors are of remarkable features, such as high efficiency, large torque, large overload capacity, low noise and vibration, large margin of temperature rise, excellent performance, easy installation and maintenance, long lifespan, reasonable flameproof structure, safe and reliable operation, and beautiful appearance. The technical level reaches the advanced level at home.