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ROOTSâ„¢ 65 Universal RAI-Gâ„¢ Blower

Model: 65 URAI-G

The ROOTS™ 65 URAI-G gas blower is built for demanding industrial gas handling applications where reliable airflow, pressure stability, and continuous-duty performance are essential. Delivering airflow up to 526 CFM with operating pressures to 15 PSI and vacuum capability to 16" Hg, this heavy-duty blower combines a rugged cast iron housing, mechanical seals, precision two-lobe impellers, and ground steel shafts for dependable operation in challenging environments. As part of the URAI-G Blowers Frames 32 thru 615 series, the unit also features splash oil lubricated timing gears, synthetic grease drive-end lubrication, and 1/8″ NPT purge ports to support long-term sealing performance and efficient gas handling up to 250°F.

Key Specifications
Max Flow
526 CFM
Max Pressure
15 PSI
Max Vacuum
16" Hg
Maximum RPM
2350 RPM
Minimum RPM
636 RPM
Maximum Temperature
250ËšF
Manufacturer
Roots
IO&M Manuals
Literature

Technical Details

ROOTSâ„¢ 65 URAI-G Blower
Model: Roots Model 65 URAI-G
Flow Range: to 526 CFM
Max Δ Pressure: 15 psi
Max Δ Vacuum: 16″ Hg
Max RPM: 2350
Min RPM: 636
Max ΔT: 250˚F
Connection Size: 3″ FPT
Shaft Diameter: 1.375″
Mechanical Seals: Yes
Purge Ports: 1/8″ NPT for buffer or seal gas
Leak Test: 15 psig static leak test
Drive End Lubrication: Synthetic Grease
Gear End Lubrication: Oil
Required Oil for Gear End Horizontal Unit: 52.1 ounces
Required Oil for Gear End Vertical Unit: 28.3 ounces
Unit Weight: 245 pounds (111.4 kg)

65 URAI-G Blower Design & Construction Features

Mechanical seals for reliable gas containment
Rigid one-piece cast iron casing
Splash oil lubricated spur timing gears
Oversized anti-friction bearings
Straight precision-machined two-lobe impellers
Ground steel shafts for improved rotational stability
Cylindrical roller bearing for V-belt load resistance
Detachable steel mounting feet
Standard pipe size connections
1/8″ NPT purge ports for buffer or seal gas applications
Leak-tested construction for industrial gas handling systems