Transfer in PEK / Bags - re check ?

Hi , i arrive with Thai Airways from BKK (seperate Ticket) and leaving . hrs later with ANA to NRT also on a separate Ticket ..i know i have to collect my Bags and re-check them with ANA to NRT and GUM.

I assume i have to got thru Security and Customs Inspections. Is that a problem , is the time enough to get thru ?
Thanks for the info