ការថែរក្សាទ្រនាប់ម៉ូទ័រ dc គ្មានជក់ -

លើសពីនេះ ក៏ចង់វាស់រឿយៗនូវ dc brushless motor bearing check clearance check for cracks, bearing the phenomenon such as rust color, also can turn the brushless dc motor bearings should be uniform smooth voice, no card plug phenomenon.