A rigid coupling is a type of torsional rigid coupling that has no rotational clearance even when subjected to a load.Even when there is a deviation that generates a load,the rigid coupling still transmits torque rigidly.If there is any deviation in the system,it will cause premature damage to the shaft,bearings,or couplings,which means they can’t be used in high-speed environments because they cannot compensate for the relative displacement between shafts caused by high temperatures during high-speed operation.If the relative displacement can be successfully controlled,rigid couplings can also perform excellently in servo system applications.Especially small-sized rigid couplings have superior performance such as light weight,ultra-low inertia,and high sensitivity.In practical applications,rigid couplings have the advantages of maintenance free,strong oil resistance,and corrosion resistance.Although people did not support the use of rigid couplings in servo drives in the past,due to their high torque bearing capacity,rigidity,and zero clearance performance,small-sized aluminum alloy rigid couplings are increasingly being used.
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