Too many designers spend time and money on high accuracy position and speed devices, such as rotary encoders, only to compromise their performance by using an inappropriate shaft coupling. We asked the experts at Abssac for advice on appropriate coupling selection Shaft encoders are accurate instruments, capable of extremely high angular resolution and are normally supplied as servo or flange mounted units, with protruding shafts. Even the smallest amounts of misalignment between driven and driving shafts can produce side and end loads which will inevitably reduce the life of the internal bearings and the accuracy of an encoder.
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