Air Compressors - mainsplain

[FAKKY]

So ...... need someone to man"splain" me 2 thigns with compressors .....


1) Why does HP matter to CFM ....... meaning generally speaking you get a 110v/2HP compressor that peaks out at 5cfm ........ or you step up to 220v/5HP and get 12cfm.

Would have thought that was completely a displacement and RPM thing ...... nothing to do with HP as such .....



2) How come this compressor can do 6.0CFM at 3.0HP (peak) ...... and 99% others are < 4cfm.

https://www.makitatools.com/products/details/MAC5200

I'm basically toying up with buying it ..... but wondering if it can keep up with my low CFM sander.

https://www.harborfreight.com/6-in-p...der-64416.html

Listed at 4CFM at 90psi.