Model 52 - Multistage Centrifugal Blowers Brochure

Number of Stages  1 through 10. Inlet Connection  6 (1524 mm) flange, ASA 125# / ANSI 150# drilling. Outlet Connection  5 (1270 mm) flange, ASA 125# / ANSI 150# drilling. Operating Speed  3550 RPM (60 Hz), 2960 RPM (50 Hz). Casing Pressure 20 PSIG (141 kg/cm2). Seals (air)  Labyrinth type. Seals (gas)  Stuffing box type/custom available. Bearings  Ball, 10-year minimum life per AFBMA L10 standard. Lubrication  Grease (oil available). Impeller Diameter  2200 in (5588 mm). Impeller Tip Speed  341 ft/s (104 m/s) @ 3550 RPM. First Critical Speed  4505 RPM (10-stage). Drive Type  Direct coupled or Belt driven, Inlet driven (standard) or Outlet driven. Shaft End  1625 in (4128 mm) diameter at coupling. Vibration Tolerence  25 in/s (64 mm/s) ISO overall specification, 125 mils (003 mm) peak to peak. Rotor Balance  Military standard 167-1 Individual impellers and rotating assembly dynamically balanced.