grinding wheel 20 rotates against the surface of the roll 22 and is driven by a motor 32 mounted on a carriage 30 the roll 22 supported on the neckrests 26 and 28 is caused to rotate by a chuck arrangement not shown which is part of a headstock 34 the headstock 34 includes a drive motor 36 for turning the roll 22 through the chuck arrangement the headstock 34 and a footstock 38 are both on the front bed 12 the footstock 38 being slidable on the front ways 14 the headstock 34 and the footstock 38 each have a roll center 37 which engages each end of the roll during initial stages of alignment thereof prior to set up with the neckrest supports 26 and 28 the neckrest support 26 nearest the footstock 38 is typical of both and may be seen more clearly in fig3 the journal 24 of the mill roll 22 when it is set up in the support 26 is disposed against a bottom gib 40 and a side gib 42 the gibs 40 and 42 are bearing blocks preferably constructed from a meehanite casting meehanite is a tradename of a processed iron of high strength which has both unusual wear resistance and high vibration damping characteristics both gibs 40 and 42 have a babbit surface 44 which has an area or line that is in actual engagement with the journal 24 the gibs 40 and 42 also comprise a housing 46 which is removably disposed about.