The drum-shaped gear coupling is to make the external teeth into a spherical surface, the center of the spherical surface is on the gear axis, and the gap on the ulnar side is larger than that of the ordinary gear. The drum-shaped gear coupling can allow a larger angular displacement (relative to the straight gear coupling), which can improve the contact conditions of the teeth, increase the torque capacity, and extend the service life.
WGT type is connected to the middle set of drum-shaped gear coupling, which is suitable for long distance connection. The nominal torque is 800～1400000N·m.
