I had a wore out saw ,dw788 2 years ago . greased all the bearing i could grease but two ,they needed to be pressed out with a new bearing.I didn't do it because i hate done time and i might break something trying.But i got 2 years of heavy heavy use from the grease. ?The bearings i didn't grease caused to much wear and finally it kept breaking blades.Harbor freight wants $39.00 for the bearing press.So i would say repack the bearings as soon as you get your saw and enjoy years of trouble free heavy srolling in 3/4 " plywood.