WG drum type coupling is a kind of coupling is also called the drum gear coupling, the so-called drum type coupling to make outer teeth as sphere, spherical center on the gear axis, backlash is generally large gear, WG drum type coupling relative to straight tooth coupling allows large angular displacement, can improve the tooth contact conditions, improve the ability to transfer torque, prolong service life, has an angular displacement along the tooth width of the contact state, by the same number of inner gear ring and out-of-band tooth flange half couplings and other parts. WG drum type coupling is divided into two types: type I and type II. The type I of WG drum type coupling is with gland type, which is suitable for wg1-wg24. The drawback is that the manufacturing process is called complex, heavy and expensive. The type II of the WG drum type coupling is the type without gland, suitable for wg1-wg14, with the advantage of low price.
When the WG drum type gear coupling is working, the relative angular displacement of the two axes is generated, and the tooth surfaces of the inner and outer teeth are subject to relative axial sliding periodically, which will inevitably lead to tooth surface wear and power consumption. Therefore, the gear type coupling should work in a good and sealed state. Gear coupling radial size is small, bearing capacity is large, often used in low speed and heavy load conditions of the shaft drive, high precision and dynamic balance of the gear coupling can be used for high speed drive, such as gas turbine shaft drive.
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