Small size universal coupling

Common types of universal couplings are: general-purpose, high-speed, miniature, retractable, high-torque universal couplings and many other types. WS. WSD small cross shaft universal coupling is suitable for connecting the transmission shaft system with the angle of the two shaft axes β≤45°; the single cross shaft universal coupling and double cross shaft with a nominal torque of 11~2N·m are transmitted Universal coupling. WSD type is a single cross universal joint, and WS type is a double cross universal coupling with an angle of 1120o between each axis.Finished hole H45 can be provided with keyway, hexagonal hole and square hole according to requirements.It is one of the important tasks of machine installation to allow the angle between the two shafts to be changed according to the work needs within a limited range.The purpose of alignment is to make the driving shaft and the driven shaft on the same straight line when the machine is working.The accuracy of alignment is related to whether the machine can operate normally, and is especially important for high-speed machines.It is difficult to achieve accurate alignment of the two shafts of the cross universal joint, and it is difficult to always maintain accurate alignment for the continuous operation of the machine.

The universal coupling utilizes the characteristics of its mechanism to make the two shafts not on the same axis, and when there is an angle between the axes, it can realize the continuous rotation of the connected two shafts, and transmit torque and motion simultaneously.The characteristics of the universal coupling are: its structure has a large angular compensation capability, a compact structure and a transmission.The angle between the two axes of universal joints of different structures is different, generally between 5°-45°.The uneven thermal expansion of the components of the cross universal joint, the deflection of the shaft, the uneven wear of the bearing, the displacement of the machine and the uneven sinking of the foundation, etc., are all reasons why it is difficult to maintain the shaft alignment.Therefore, when designing the machine, it is stipulated that there is an allowable deviation value for the two shafts, which is also required when installing the coupling.From the assembly point of view of the cross universal coupling, as long as the coupling can transmit torque, the greater the allowable deviation of the two shafts, the easier it is to meet the requirements during installation.But from the perspective of installation quality, the smaller the deviation of the two shafts, the better the machine's operation and the longer the service life.Therefore, the allowable deviation of the alignment of the two shafts during the installation of the universal coupling cannot be regarded as the margin left by the installer's hasty construction.

Universal couplings have a variety of structural types, such as: cross shaft type, ball cage type, ball fork type, bump type, ball pin type, ball hinge type, ball hinge plunger type, three pin type, three fork rod type , Three ball pin type, hinge type, etc.; the commonly used is the cross shaft type, followed by the ball cage type.In practical applications, according to the size of the transmitted torque, it is divided into heavy, medium, light and small.Universal couplings are widely used in various general mechanical occasions due to their large deviation angle and high transmission torque.