Multistage centrifugal blower model 077

Construction materials

Bearing body: Cast Iron FGL 250
Head, sections: Cast Iron FGL 250
Cross Bar: 13/16” (20 mm) diameter cold-drawn A60 steel
Sealing gasket compound: RTV IS502 Silicone
Sealing (air): 2 graphite rings on each terminal
Sealing (gas): 4 carbon rings on each terminal with inert gas injection

Bearings: 6313 C3 ball bearing per AFBMA B10 standard
Shaft: C35 Carbon Steel (available in stainless steel)
Turbines: Cast Aluminum Si 10 Mg
Motor pedestal: UPN plated carbon steel
Chassis installation: Anti-vibration plate
Noise level: OSHA compliant (certified testing available)

Technical data

Number of stages: From 1 to 9 (casting)
Inlet connection: Flange 8″ (202 mm), PN 10 DN 200
Outlet connection: Flange 8” (202 mm), PN 10 DN 200
Operating Speed: 3550 direct drive (60 Hz), 4400 with v-belt
Lubrication: Constant level oil
Turbine diameter: 24″ (611 mm)

Turbine tip speed: 372 f/s (113 m/s)
Critical Speed: 4275 rpm (8-stage)
Transmission: Direct or v-correct
Vibration Tolerance: 4.5 mils from peak to peak (4.5 mm/s)
Final Shaft: 2″ 3/8 (60 mm), Standard Final Drive

Dimensions

Blower 77.01 : 290 x 1372 x 1676 (mm) / 900 Kg
Blower 77.02 : 400 x 1524 x 1829 (mm) / 1040 Kg
Blower 77.03 : 510 x 1676 x 1981 (mm) / 1180 Kg
Blower 77.04 : 620 x 1880 x 2184 (mm) / 1330 Kg
Blower 77.05 : 730 x 2184 x 2489 (mm) / 1480 Kg

Blower 77.06 : 840 x 2286 x 2591 (mm) / 1610 Kg
Blower 77.07 : 950 x 2286 x 2591 (mm) / 1730 Kg
Blower 77.08 : 1060 x 2591 x 2896 (mm) / 1880 Kg
Blower 77.09 : 1170 x 2896 x 3200 (mm) / 2030 Kg