Oberdorfer's N993 Series pump housing and gears are made of top-quality bronze, and shafts are made of 303 stainless steel. Bearings are designed of high-performance carbon-graphite material selected for wear resistance and long service life. Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by the back pressure in the discharge line. Shaft speed and flow are directly proportional. Recommended pressure limits are 100 PSI for water and non-lubricants, and 150 PSI for oil and other lubricants. The maximum shaft speed is 1750 RPM. Notes: Pump only. Motor not included. Features Rugged corrosion resistant bronze construction Compact close-coupled design Stainless steel shafts Durable bronze helical gears provide quiet operation Process lubricated carbon graphite bearings O-ring cover seal for maximum leak protection Nitrile Lip Seal - standard Easy field assembly to a variety of motor frames Specifications Series: N993 Type: Gear Pump Pump Housing and Gears: Bronze Shaft: 303 Stainless Steel Bearings: Carbon Graphite Seal: Nitrile Rubber Lip Seal - Fluoroelastomer Available Port Size: 1/2 in. NPT Maximum Flow Rate: 8.8 GPM Maximum Shaft Speed: 1750 RPM Recommended Pressure: Water & Non-Lubricants: 100 PSI Oil & Lubricants: 150 PSI Downloads Product Manual (PDF Download) Datasheet (PDF Download) Mounting Instructions (PDF Download) Inspections for Possible Problems with Gear Pumps (PDF Download)
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