Drum gear coupling are just flexible coupling, gear coupling is the same number of teeth of the ring gear and flange coupling half with external teeth and other parts. Straight teeth and outer teeth into the teeth of two toothed drum, drum-shaped teeth is the so-called outer teeth into the sphere, sphere centered on the axis of the gear, the gear backlash than the average large, drum gear coupling can allow larger angular displacement (relative to straight teeth couplings), can improve tooth contact conditions, improve the ability to transmit torque and prolong life. Contact state along the width of the teeth when the angular displacement. With radial, axial and angular axis offset compensation capability, etc., with a compact, small turning radius, large carrying capacity, high transmission efficiency, low noise and long service intervals, etc., especially for low-speed heavy conditions, such as metallurgy, mining, materials handling and other industries, is also applicable to the petroleum, chemical, machinery, general machinery and other types of gear coupling shaft drive at work, a relative angular displacement of the two axes, periodic internal and external tooth flank axial sliding, will inevitably lead to tooth wear and power consumption, therefore, need to work gear coupling and sealing in a good condition. Small gear coupling radial size, large carrying capacity, commonly used in low-speed heavy working conditions shaft drive, high precision and by balancing the gear coupling can be used for high-speed transmission, such as gas turbine shafting Transmission. Because of drum gear coupling to compensate for more than a straight angle gear coupling, at home and abroad are widely used drum gear coupling, gear coupling belonging straight out of the products, the choice of who should try not to choose . Drum gear coupling characteristics (compared with straight teeth coupling has the following characteristics): 1, carrying ability. At the same sets of teeth outside and inside the maximum outside diameter of the coupling, drum gear coupling of the carrying capacity of an average of more than straight teeth coupling 15 to 20% 2, the angular displacement of the large amount of compensation. When the radial displacement is zero, straight gear coupling permissible angular displacement of 1o, and drum gear coupling permissible angular displacement of 1o30 ', increased by 50%. In the same modulus, teeth, tooth width, the drum-shaped teeth than straight teeth allow large angular displacement, 3, inside the drum so that the tooth surface, the outer tooth contact conditions can be improved to avoid the angular displacement of the tooth condition BARS tooth side edge extrusion, stress concentration drawbacks, while improving the tooth surface friction, wear condition, reduce noise, long maintenance cycle. 4 sets of teeth of the outer tooth end was horn shape, so that the inner and outer gear assembly and disassembly is very convenient. 5, the transmission efficiency of 99.7%. Based on the characteristics of the Scripture, at present, at home and abroad have been widespread alternative to straight teeth drum gear coupling. Related Products: coupling gear coupling flexible coupling plum-type flexible coupling products from http://www.nuo-xin.cn