One of the most under-rated procedures of the precision shaft alignment process is the TIGHTENING SEQUENCE of the hold down bolts on the movable machine. Also, tightening the bolts to proper torque specifications is many times considered unnecessary and is just not typically done. Tightening sequence and proper bolt torque are critical to the performance…
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Some companies have a policy of torquing motor hold down bolts to set prescribed value. While this may be a regulation in some industries, or required on specific types of machines, it really has little to do with the quality, accuracy or repeatability of shaft alignment–if the alignment is done properly. Most millwrights may disagree. This is…
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