QUIET-RUNNING HELICAL GEARS LONG-LASTING BEARING SURFACES PRECISION-GROUND SHAFTS RUGGED HOUSINGS • Heat treated cast-iron pumping gears are accurately machined for quiet, efficient operation and long life. • The pumping gears are keyed to their shafts with a sliding fit and are easily replaced. • Accurate machining ensures proper meshing and reduces friction and vibration. • Bearings are special wear-resistant, high-lead bronze. Iron and carbon bearings are available. • Four heavy duty sleeve bearings provide positive support to pumping gears and ensure long, efficient service. • Bearing grooves allow circulation of the liquid being pumped for lubrication & control of bearing temperature • Outboard drive shaft bearing supports external radial loads and absorbs axial thrust loads. • The steel shafts are induction hardened in the bearing and sealing areas and are precision ground to exacting standards for maximum life. • Hardened stainless steel shafts available. • Standard castings are cast iron. • Precise manufacturing tolerances provide minimum clearances for maximum pumping efficiency. • Large, hardened steel dowel pins ensure positive alignment between the faceplate, case, and backplate
