The YDB type explosion-proof oil-cooled electric roller is designed and manufactured in accordance with the requirements of GB3836.1-2000 "Electrical equipment for explosive gas atmospheres - Part 1: General requirements" and GB3836.2-2000 "Electrical equipment for explosive gas atmospheres - Part 2: Explosion-proof type 'd'". It is marked as ExdⅠ for explosion-proof and suitable for coal mines (excluding mining faces) with explosive gas mixtures. The installation dimensions comply with industry standards. As a new type of drive unit for belt conveyors, it has significant advantages over transmission devices with explosion-proof motors and reducers, such as compact structure, safe installation, easy operation, and attractive appearance. It has been widely used in conveying machinery for many years. The product is manufactured in accordance with the JB/T7330-2008 "Electric roller" standard.