WGP type drum gear coupling with brake disc is suitable for connecting two horizontal coaxial transmission shaft systems. The inner gear ring is wider and can compensate for large axis deviation. It is suitable for occasions matched with disc brakes and allows positive and negative rotation. The brake disc diameter is 315-1000mm and transmits a nominal torque of 800~180000N.m. In order to enhance the lubrication and sealing effect, reduce the number of parts, and improve the operating reliability, it is particularly recommended to use a sealing end cover and an inner gear ring as an integral structure.