"Lloyd E. Sponenburgh" wrote:

For machine coolant I use an ordinary household 9" filter sump with
the
basic 5 micron sediment filters and it works well. You mostly filter
chips and they don't clog it readily, and the household filters handle
plenty of GPM.

In a machine shop where I worked, the boss had set up all the grinders with
a common 'sock' filter just strapped onto the suction hose for the pump.

Worked fine.

Lloyd

Many or even most machine coolant pumps have a submerged impeller
assembly with no suction hose, which means filtering is generally done
on the output side. The $20 household filter sumps work well and since
the chips can typically just be cleaned out of the housing and rinsed
off the filter cartridge, the filter cartridge lasts a long time. I
looked at mesh strainer assemblies intended for crop sprayers and they
cost more and wouldn't work any better.