ABSTRACT
Amoredetaileddescriptionandclassificationofthesegroupsisgiveninthefollowingsections. Disturbancesfrommillmechanicalandhydraulicequipment-Theimperfectionsandvariabilityof
certainparametersofthemechanicalandhydraulicequipmentcanproduceundesirablevariationsinthe no-loadrollgapandmillstiffness.Theno-loadrollgapvariationsareusuallyaresultofthefollowing factors(Fig.8.1):
•Rolleccentricity. •Rollovality. •Rollwear. •Rollexpansionorcontraction. •Rollbalanceforcevariation. •Millchatter. •Rollbearingoilfilmthicknessvariation. •Rollbitelubricantfilmthicknessvariation.
