19mm Flexible Coupling for Glass Shafts - 3/4" Diameter Universal Joint Connector - Perfect for Laboratory Equipment, 3D Printers, and DIY Projects

The Arrow Engineering 4 in. flexible coupling has metal collars and a rubber sleeve body. This flexible coupling attaches a glass shaft to laboratory stirrer. It has metal collars for corrosion resistance and durability. The rubber sleeve body provides shock absorbance and torsional stiffness. An interior fluoropolymer resin sleeve with a set screw holds the stir shaft securely.Flexible couplings are used to link two rotating shafts that are not aligned in order to transmit the rotational power, known as torque, from one shaft to the other. Most flexible couplings consist of two hubs and a middle assembly; each hub attaches to a shaft while the middle assembly flexes between the hubs to accommodate the misalignment of the two shafts. Shaft misalignments are generally either parallel or angular and cause complications to transmitting rotational power from one shaft to another in the form of stresses, loads, vibrations, and other forces, which vary from one type of misalignment to another. Flexible couplings are used in a broad range of applications, such as in motor vehicles, conveyors, escalators, agricultural, forestry and mining equipment, aeronautics, robotics and space exploration, among others.Arrow Engineering manufactures air-powered and electric laboratory stirrers and accessories. The company, founded in 1945, is headquartered in Hillside, NJ.