Continuous burning will harm burner?

i need to resort my anime collection, might have to burn out ~40 disc @ 1 time, is that gonna harm the burner? should i give it a break in between? what’s the maximum ammount that we should do continiously?

A general rule is to burn around 6 discs with at least a 30 min vreak before burning more. Heat is the issue. That said, most burners would survive a 40-disc session if you simply limit burn speed to 8x and the drive is well cooled.