ROOTS™ 45 Universal RAI DSL

Model: 45 URAI DSL

The ROOTS™ 45 Universal RAI DSL blower delivers airflow to 395 CFM with operating pressures to 10 PSI and speeds to 3600 RPM. Designed for continuous-duty service, it features dual splash oil lubrication, precision-machined bi-lobe impellers, carburized alloy steel timing gears, oversized anti-friction bearings, and Howden’s figure-eight gearbox design for improved lubrication distribution and operational reliability.

Key Specifications

Max Flow

395 CFM

Max Pressure

10 psi

Max Vacuum

15" Hg

Maximum RPM

3600 RPM

Minimum RPM

848 RPM

Manufacturer

Roots

IO&M Manuals

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Literature

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Technical Details

Universal RAI DSL Blower

ROOTS™ Model 45 URAI DSL

Model: Roots Model 45 URAI DSL

Flow Range: to 395 CFM

Max Δ Pressure: 10 psi

Max Δ Vacuum: 15″ Hg

Max ΔT: 225˚F

Connection Size: 2.5″ FPT

Shaft Diameter: 0.875″

Drive End Lubrication: Oil

Gear End Lubrication: Oil

Required Oil Gear End Horizontal Unit: 14.5 ounces

Required Oil Drive End Horizontal Unit: 10.8 ounces

Required Oil Gear End Vertical Unit: 12.7 ounces

Required Oil Drive End Vertical Unit: 5.5 ounces

Unit Weight: 113 pounds (51.4 kg)

45 Universal RAI DSL Blower Design & Construction Features

Steel detachable mounting feet

Rigid one-piece cast iron casing

Anti-friction bearings

Splash oil lubricated spur timing gears

Splash oil lubricated drive end bearings

Standard pipe size connections

Balanced precision-machined bi-lobe impellers

Ground steel shafts

Cylindrical roller bearing at drive shaft for V-belt load resistance

Two shaft-mounted oil slingers at drive end

Howden exclusive figure-eight gearbox design

3/8″ sight glasses for oil level monitoring

Accessories

Available accessories include driver packages, inlet and discharge silencers, relief valves, inlet filters, check valves, extended bases, V-belt drives, flexible couplings, drivers, and drive guards.

Warranty Information

ROOTS™ Universal RAI DSL blowers are backed by a 2-year warranty with an additional 6 months covering shipping and construction where applicable. ROOTS synthetic lubricants are recommended to maximize lubricant life and long-term blower reliability. Oil sight glasses are provided for accurate oil level monitoring during operation.