This is a general purpose Roper A series Pump for Pressure Lubrication, Hydraulic Service, Fuel Supply and General Transfer. The Roper A Series pumps are adaptable to a wide range of applications pumping clean fluids, such as pressure lubrication, hydraulic service, fuel supply or general liquid transfer. These pumps are designed to operate at standard motor speeds, with provisions for flange or foot mounting.
They are manufactured and assembled with close tolerances, and regularly tested to insure dependable performance. Accurate machining insures proper meshing, reduced friction and vibration, quiet, efficient operation, and long life. Factory assembled for clockwise rotation (facing the pump drive shaft end), most may be reassembled for operation with equal efficiency in a counter-clockwise rotation.
Large, hardened steel dowel pins insure positive alignment between the faceplate, case, and backplate. Four heavy duty sleeve bearings give positive support to pumping gears and insure long, efficient service. These internal bearings are lubricated by the fluid being pumped. The Bearings are special wear-resistant, high-lead bronze. (Iron and carbon bearings are available.) With only two moving parts, being the gears, the pumps run quietly.