47 URAI - Roots Blower - 65110020 B-L-T-R Dresser ROOTS



The 47 URAI blower has a 4 inch gear and a 7 inch rotor length. The NPT connection is 3 inches with a shaft diameter of 0.875 inches. Please refer to the installation and operation manual for more technical information about model 47 URAI. For better assistance with ordering model 47 URAI please contact air blower services.

Reference BOM # 65110020 B-L-T-R or 47 URAI

Model 47 URAI
Flow Range: to 523 CFM
Max Δ Pressure: 7 psi
Max Δ Vacuum: 15″ Hg
Max RPM: 3600
Min RPM: 848
Max ΔT: 225˚F
Connection: 3″ FPT
Shaft Dia.: 0.875
Drive End Lubrication: Grease
Gear End Lubrication: Oil
Required Oil for Gear End Horizontal Unit: 22.8 ounces
Required Oil for Gear End Vertical Unit:
12.7 ounces
Unit Weight: 128 pounds (58.1 kg)
Shipping Box Size (LxWxH): 21.5″x19.5″x15.5″ (546mmx495mmx394mm)
Shipping Container: Cardboard Box with formed foam


Frame Sizes:





ROOTS™ URAI blowers are warranted for two years plus an additional 6 months for shipping and construction where required. ROOTS synthetic oil assures top performance and warranty acceptance for lubricants.



Detachable steel mounting feet
Rigid one-piece cast iron casing
Anti-friction bearings
Thrust Control
Splash oil lubricated spur timing gears
Connections in standard pipe sizes
Straight, precision machined two-lobe impellers
Ground steel shafts