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ROOTS™ Universal 76 URAI

Model: 76 URAI

The ROOTS™ Universal RAI Blower model 76 URAI, part of Frames 22 thru 718, is engineered for continuous-duty industrial airflow applications with capacities to 765 CFM and pressures to 15 psi. Precision-machined involute impellers, carburized alloy steel timing gears, and oversized anti-friction bearings provide stable volumetric efficiency, while synthetic blower oil delivers an estimated 4000–8000 hour lubricant life at approximately 180°F operating temperature.

Key Specifications
Max Flow
765 CFM
Max Pressure
15 psi
Max Vacuum
16" Hg
Maximum RPM
2050 RPM
Minimum RPM
545 RPM
Manufacturer
Roots
IO&M Manuals
Literature

Technical Details

Universal RAI Blower
Roots Blower Model 76 URAI
Flow Range: to 765 CFM
Max Δ Pressure: 15 psi
Max Δ Vacuum: 16″ Hg
Max RPM: 2050
Min RPM: 545
Max ΔT: 250˚F
Connection Size: 4″ FPT
Shaft Diameter: 1.562″
Drive End Lubrication: Grease
Gear End Lubrication: Oil
Required Oil – Horizontal Unit: 59.5 ounces
Required Oil – Vertical Unit: 32.3 ounces
Unit Weight: 400 lbs (181.8 kg)

76 URAI Blower Design & Construction Features

Frames 22 thru 718 platform configuration
Steel detachable mounting feet
Rigid one-piece cast iron casing
Balanced precision-machined bi-lobe impellers
Ground steel shafts
Carburized alloy steel spur timing gears
Oversized anti-friction bearings
Cylindrical roller bearing designed for V-belt loads
Thrust control configuration
Splash oil lubricated gear end
Grease lubricated drive end
Standard pipe size connections
Vertical and horizontal installation adaptability

Warranty Information

ROOTS™ Universal RAI blowers are backed by a 2-year warranty with an additional 6months covering shipping and construction where applicable. ROOTS synthetic lubricants are recommended to maximize blower reliability and lubricant service intervals.