EMAX Compressor's 2 stage patented pressure lubricated air compressor pumps are the newest addition to our line. Our patented pressure-lubricating pump ensures oil flows to all critical components, resulting in less wear and tear. This unique system delivers oil to the pump at RPM's as low as 100! Our well-balanced large cast iron flywheel, crankshaft and re-buildable connecting rods provide continuous smooth operation. The 100% cast-iron pump provides rigid and precise tolerances. An oil pressure gauge allows for easy monitoring of running oil pressure, with low oil pressure shut down. Our pressurized pumps also have a re-usable oil filter for easy maintenance and are designed large with low RPM for long life and quiet operation. These pumps have a proven life expectancy of over 70,000 hours! With our built-in head unloaders for continuous run, large flywheel, low RPM, double B-section belt drive, pressure lubricated pumps we are maximizing the life and energy savings! All backed by the best warranty out there!