Positioning screw plum coupling, also called claw coupling consists of two metal claw plate and an elastic body composition. Two metal claws 45 steel plate is generally, couplings, but in the case of load requirements also useful for sensitive aluminum or stainless steel. Plum-shaped flexible coupling use plum-shaped flexible element placed between two halves of the coupling detents, cross coupling, in order to achieve the coupling of two coupling halves. With a two-axis compensation relative displacement, shock absorption, cushioning, small radial size, simple structure, no lubrication, high load capacity, easy maintenance, etc., coupling the drawings, but replacing the elastic element coupling halves need along axial movement. . Plum elastic body has a plurality of blades spaced branches, the same as the Oldham coupling, gear coupling, it is also by pressing to make plum elastomeric spacer sleeve and both sides agree, and thus ensure its zero clearance performance. And Oldham coupling is different, plum coupling is by pressing the drive and slide the drive coupling is by shear. When zero backlash jaw couplings use, the user must be careful not to exceed the maximum capacity of the elastic element given by the manufacturer (the premise of ensuring zero clearance), or plum blossom elastic deformation of the spacer will be flattened to lose Flexible, pre-load disappears, resulting in the loss of zero backlash performance, but also potential users will find the serious problem occurs. Oldham coupling _ _ Korea and Taiwan transmission mechanical coupling provided by the Dongguan City, Transmission Machinery Co., Ltd. of Korea and Taiwan. Road Zhiyuan, temper forward. Dongguan City, South Korea Taiwan Transmission Machinery Co., Ltd. (www.dghantai.com) (www.hantai168.com) aims to become and you win symbiosis, strategic partners to move forward, more determined to become the most influential tool accessories business, leap with you, common success!