The Quincy QP Pressure Lubricated Reciprocating Air Compressor has a cast iron oil pump for pressure lubrication to the crankshaft, bearings and connecting rods up to the wrist pins. The QP balances cost effectiveness with longer life to maximize your investment, up to 15% longer life than a splash lubricated compressor. Quincy QP MAX unit features a two-stage fully pressure-lubricated compressor that is tank mounted with an ODP electric motor and factory mounted overload protection. QP Max package includes air-cooled after-cooler, low oil protection, and electronic tank drain. Also has factory installed digital control panel, featuring hour meter and adjustable cut-in/cut-out pressures, air-cooled after-cooler, low oil pressure switch and electronic tank drain. Made in U.S.A.