External tooth gear coupling have straight teeth and two drum gear tooth, flexible couplings are inelastic components, CL type gear coupling at work, will produce angular displacement, internal and external teeth Tooth slide axially, in order to reduce wear and tear, CL gear coupling to be run in a good state of lubrication and sealing. Drum gear coupling in straight teeth, based on the approximate spherical outer teeth into, and increased ulnar gap, drum gear coupling increases the angular displacement, improved tooth contact conditions improve transmission performance, long life, large drum gear coupling carrying capacity, commonly used in the low-speed shaft drive heavy working conditions, is a substitute gear coupling. Botou Jie Tai Machinery is a professional drum gear coupling manufacturer, in accordance with the quality standards and design processes gear coupling, the application of advanced equipment manufacturing, warehousing blanks to put into production, through self and mutual inspection every aspect of the service, and other means to help customers improve efficiency and reduce costs.