ROOTS™ Universal 42 URAI

Model: 42 URAI

The ROOTS™ Universal RAI blower Model 42 URAI is engineered with precision-machined cast iron involute impellers, carburized alloy steel spur timing gears, and oversized anti-friction bearings for stable rotor timing and continuous-duty operation in both pressure and vacuum conditions. Thrust control, splash oil gear-end lubrication, and detachable steel mounting feet support reliable performance with flexible four-position vertical or horizontal installation capability.

Key Specifications

Max Flow

187 CFM

Max Pressure

15 psi

Max Vacuum

16" Hg

Maximum RPM

3600 RPM

Minimum RPM

848 RPM

Manufacturer

Roots

IO&M Manuals

Download

Literature

Download

Technical Details

Universal RAI Blower

Roots Blower Model 42 URAI

Roots Blower Model: 42 URAI

Flow Range: to 198 CFM

Max Δ Pressure: 15 psi

Max Δ Vacuum: 16″ Hg

Max ΔT: 240˚F

Connection Size: 1.5″ FPT

Shaft Diameter: 0.875″

Drive End Lubrication: Grease

Gear End Lubrication: Oil

Required Oil – Horizontal Unit: 14.5 ounces (0.43 litres)

42 URAI Blower Design & Construction Features

Steel detachable mounting feet

Rigid one-piece cast iron casing

Anti-friction bearings

Thrust control design

Splash oil lubricated spur timing gears

Standard pipe size connections

Balanced precision-machined bi-lobe impellers

Ground steel shafts

Cast iron involute impellers

Carburized and ground alloy steel timing gears

Cylindrical roller bearing for V-belt load support

Four-position drive shaft adaptability

Vertical and horizontal mounting capability

Warranty Information

ROOTS™ Universal RAI® industrial blowers are warranted for two years with an additional six months for shipping and construction where applicable. ROOTS synthetic oil is recommended to maximize lubricant service life and maintain reliable operating performance.