Drum gear coupling: 1: NGCl drum gear coupling: NGCL type brake wheel drum gear coupling at work, two axes, a relative angular displacement, both inside and outside the teeth surface periodically for relative axial sliding inevitably lead to tooth wear and power consumption, gear coupling to be good and sealed. Gear coupling small radial size, carrying capacity, shaft drive, commonly used for low speed and high load operating conditions, high-precision and dynamic balancing gear coupling can be used for high-speed transmission, such as gas turbine shafting transmission. Drum gear coupling angle to compensate for more than straight teeth coupling, at home and abroad are widely used drum gear coupling the straight gear coupling products are being eliminated, the selection should not Optional. 2.G Ⅰ CLZ type - drum gear coupling tooth surface of the drum to the inner and outer tooth contact conditions have improved, to avoid conditions of angular displacement straight teeth side edge extrusion, the drawbacks of the stress concentration at the same time improve the tooth surface friction, wear condition, reduced noise, maintenance cycle. The outer teeth set of teeth end was horn shape, the inner and outer teeth very convenient assembly and disassembly. 3.WGT type middle set of drum gear coupling drum gear coupling are just flexible coupling, gear coupling is by the same number of teeth of the internal gear ring and flange half associated with the outer tooth shaft and other parts. The outer teeth into straight teeth and toothed drum-shaped teeth two kinds of so-called drum-shaped teeth is the outer teeth made of spherical spherical center on the axis of the gear, backlash than normal gear big drum gear coupling allow larger angular displacement relative to the direct gear coupling can improve tooth contact conditions, to improve the ability to transmit torque and prolong life. The angular displacement state of contact along the tooth width. Compensation capacity of radial, axial and angular axis deviation, has the advantages of compact structure, small radius of gyration, large carrying capacity, high transmission efficiency, low noise and long maintenance cycle, particularly suitable for low speed and high load conditions, such as metallurgy, mining, lifting and transportation industries, and also applies to the petroleum, chemicals, general machinery, and other types of mechanical shaft drive. 4 GICL - drum gear coupling: the GICL type - drum gear coupling (JB / T 8845.3-2001) are just flexible coupling, gear coupling by the same number of teeth within teeth parts of the ring and band teeth flange coupling half. The outer teeth into straight teeth and toothed drum-shaped teeth two kinds of so-called drum-shaped teeth is the outer teeth made of spherical spherical center on the axis of the gear, backlash than normal gear big drum gear coupling allow larger angular displacement relative to the direct gear coupling can improve tooth contact conditions, to improve the ability to transmit torque and prolong life. The angular displacement state of contact along the tooth width. Compensation capacity of radial, axial and angular axis deviation, has the advantages of compact structure, small radius of gyration, large carrying capacity, high transmission efficiency, low noise and long maintenance cycle, particularly suitable for low speed and high load conditions, such as metallurgy, mining, lifting and transportation industries, and also applies to the petroleum, chemicals, general machinery, and other types of mechanical shaft drive. 5: G Ⅱ CL - drum gear coupling (JB / T 8845.2-2001) alternative (ZBJ19013-89) I - sealed end for the separation, teeth larger spacing allows larger radial displacement can be Y, J1, Z1 type shaft coupling. Type II - the sealed end of the overall type, tooth spacing is small, relative to allow radial displacement of small, compact structure, small moment of inertia, Y, J1 axis stretch coupling. : ● G Ⅱ CLZ - drum gear couplings by the same number of teeth of the inner ring and the outer teeth flange coupling halves parts. The outer teeth into straight teeth and toothed drum-shaped teeth two kinds of so-called drum-shaped teeth is the outer teeth made of spherical spherical center on the axis of the gear, backlash than normal gear big drum gear coupling allow larger angular displacement relative to the direct gear coupling can improve tooth contact conditions, to improve the ability to transmit torque and prolong life. The angular displacement state of contact along the tooth width. 11: GCLD drum gear coupling (JB / T 8854.1-2001) to instead JB/ZQ4380 drum gear coupling characteristics: drum gear coupling carrying capacity, high transmission efficiency, in the same within sets of teeth outside diameter and maximum outside diameter of the coupling, the carrying capacity of the drum gear coupling average than straight teeth coupling increased by 15 to 20%, drum gear coupling transmission efficiency up to 99.7% . Drum gear coupling angular displacement of the large amount of compensation. 12: NGCLZ type connected to the intermediate shaft and brake wheel drum gear coupling, gear coupling component parts by the same number of teeth of the internal gear ring and band teeth flange coupling half. The outer teeth into straight teeth and toothed drum-shaped teeth two kinds of so-called drum-shaped teeth is the outer teeth made of spherical spherical center on the axis of the gear, backlash than normal gear big drum gear coupling allow larger angular displacement relative to the direct gear coupling can improve tooth contact conditions, to improve the ability to transmit torque and prolong life. The angular displacement state of contact along the tooth width.