Franklin Electric 1111017481 Vacuum Pump Motor

The Welch Directorr 8920 vacuum pump is a direct-drive rotary vane system powered by a 1/2 HP Franklin Electric motor (part number 1111017481) in a 56C-FR frame, engineered for continuous low-pressure vacuum generation in lab and industrial environments. It provides 7.7 CFM free-air displacement at 1725 RPM from a 115 VAC, 60 Hz, single-phase supply and achieves an ultimate pressure of 3 × 10⁻⁴ Torr, making it suitable for demanding processes. Typical applications include laboratories, vacuum ovens, filtration systems, freeze dryers, and degassing systems, as well as broader process equipment that require stable, continuous vacuum and reliable rotary vane operation. The unit is floor- or bench-mountable, with an oil capacity of 1.3 quarts and a pump weight of about 58.5 lbs, enabling continuous-duty operation in continuous processing lines.