Though one might not think of gears to be flexible, gear couplings are very much regarded as a versatile coupling. A equipment coupling is certainly a mechanical gadget made to transmit torque between two shafts that are not collinear. The coupling typically contains two versatile joints, one fixed to each shaft. These joints are often linked by a third shaft called the spindle.

Each joint generally includes a 1:1 equipment ratio internal/external gear set. The tooth flanks and outer size of the exterior equipment are crowned to permit for angular displacement between your two gears. Mechanically, the gears are equal to rotating splines with altered profiles. They are called gears due to the relatively large size of the teeth. Gear couplings are generally limited by angular misalignments of 4 to 5°.

Equipment couplings ordinarily come in two variations, flanged sleeve and continuous sleeve. Flanged gear couplings consist of short sleeves encircled by a perpendicular flange. One sleeve can be placed on each shaft so the two flanges line up face to face. A series of screws or bolts in the flanges keep them collectively. Continuous sleeve gear couplings feature shaft ends coupled jointly and abutted against one another, which are after that enveloped by a sleeve. Generally, these sleeves are made of metal, however they may also be manufactured from Nylon.

Single joint gear couplings are accustomed to connect two nominally coaxial shafts. In this application these devices is named a gear-type versatile, or flexible coupling. The one joint allows for minimal misalignments such as installation errors and changes in shaft alignment because of operating conditions. These types of equipment couplings are generally limited to angular misalignments of 1/4 to 1/2°.