Quote Originally Posted by JAZZCNC View Post
If this coolant pump for Water cooled spindle then watch out because the Duty cycle of Car washer pump will be low so large chance the motor will burn out when in constant use.!!


I am echoing Jazz's comment. You can get a submersible pond pump for a few quid and it will run all day and everyday till it wears out.

For instance :-
http://www.ebay.co.uk/itm/Submersibl...oAAOSw-jhT-EOI

Another comment about car washer pumps is that they are high pressure (ish) low volume pumps and the way they are constructed means that any swarf will likely destroy them. Also if you run them dry the rubber vanes inside will fail very quickly. Pond pumps have the advantage that you just chuck 'em in the tank. Anything else needs plumbing.


I have just scrounged a 120mm PC cooling radiator, and that is going in the circuit.