drive belt idler bearing numbers

[94j30pearl]

Hey everyone, I need your help.

I have a 1994 J30 and the a/c drive belt idler/tensioner bearing blew up. I pressed it out and found it's a 6301 abec 1 bearing--37mmod 12mmid 12mmw-I will get the sealed version. But anyway, I want to replace the p/s and alt idler/tensioner at the same time. Are they all the same size bearing?? (I can press them out/in no prob) I just want to buy them and do it all at once. I gotta get this done this week by thursday-kid is going back to school.

Thanks!