At home, I use the standard few drops in the tool. At work, we use inline
air lubricators to lubricate the high speed (60000 rpm) die grinders. The
lubricator looks quite similar to a water trap but you fill it with oil. It
has a metering jet that regulates the amount of oil it injects into the air
line. Rather than put it at the compressor, we have them mounted to the
workbenches. The supply line from the compressor plugs into one side and the
hose to the tool is plugged into the other. This lubricates the tool that
needs it and keeps oil out of the rest of the system. In an industrial
setting, expecting the operators to keep their tools oiled is chancy. Most
never think about it. With the inline oilers, it is automatic. Below is a
link to one such unit.

http://www.colemanpowermate.com/comp.../filters.shtml

"Ed Ahern" Ed Ahern@ the_internet wrote in message
. ..
Please explain in-line lubrication. How is it set up? how does it work?

Ed