Water cooled / air cooled 2.2kw spindle

[JAZZCNC]

Yep it's easy really.!

Aircooled Cons.
Aircooled have a Duty cycle so can't run extended periods. How long depends on make and size etc. They are also relatively noisey because they cool using a Fan just like a handheld router does.

Pro's No external water cooling pipes etc.

WC Pro's
Watercooled don't have any duty cycle can run for days at time without any issues. No Fans so very quite.

Cons's

Needs water pump and tank for cooling if running long periods.

Now given your short run requirements and knowing that WC spindles will quite happily run for 30mins or more without any cooling then I'd say go with WC spindle for the quiter running and if you ever do need extended period running then just add a pump and water.!!
WC spindles don't need much cooling or fancy WC system just a simple submersible pump in sealed Tub of water works great.