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It’s as true in pulp and paper as it is in many other industries: the continued rise in energy prices has put a squeeze on margin and profits. Papermakers know that to maintain margin, they must effectively manage their energy costs.
In most cases, industrial power transmission calls for flexible rather than rigid couplings in order to forgive minor shaft misalignment. For that reason, this article will focus solely on the selection of flexible couplings.
In the history of machine tools, spindles have been very good relative
to other bearings and structures on
the machine. So quality professionals
have developed a cache of tools—-ball
bars, grid encoders displacement lasers, etc.—-to help them characterize and understand the geometry of the structural loop. But as machine tools have improved in their capability and precision, and the demands of part-geometry and
surface finish have become more critical, errors in spindles have become a larger percentage of the total error.