ROOTS™ 32 Universal RAI DSL

Model: 32 URAI DSL

The ROOTS™ Universal RAI® DSL RPD Blower Model 32 URAI DSL is engineered for continuous-duty industrial airflow applications requiring dependable lubrication and flexible installation adaptability. Designed with dual splash lubrication on both the drive and gear ends, this heavy-duty rotary blower incorporates precision-machined involute impellers, carburized alloy steel timing gears, oversized anti-friction bearings, and Howden’s exclusive figure-eight gearbox design for enhanced oil distribution and extended component life.

Key Specifications

Max Flow

142 CFM

Max Pressure

15 psi

Max Vacuum

16" Hg

Maximum RPM

3600 RPM

Minimum RPM

1090 RPM

Manufacturer

Roots

IO&M Manuals

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Literature

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Technical Details

Universal RAI DSL Blower

ROOTS™ Model 32 URAI DSL

Flow Range: to 142 CFM

Max Δ Pressure: 15 psi

Max Δ Vacuum: 16″ Hg

Max RPM: 3600

Min RPM: 1090

Max ΔT: 240˚F

Connection Size: 1.25″ FPT

Shaft Diameter: 0.75″

Drive End Lubrication: Oil

Gear End Lubrication: Oil

Required Oil – Gear End Horizontal Unit: 10.5 ounces

Required Oil – Drive End Horizontal Unit: 6.5 ounces

Required Oil – Gear End Vertical Unit: 8.5 ounces

Required Oil – Drive End Vertical Unit: 4.0 ounces

Unit Weight: 72 lbs (32.7 kg)

32 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

Balanced precision-machined bi-lobe impellers

Ground steel shafts

Standard pipe size connections

Cylindrical roller bearing designed for V-belt pull resistance

Howden exclusive “figure-eight” gearbox design

Shaft-mounted oil slingers for enhanced lubrication distribution

Integrated 3/8″ oil sight glasses for oil level verification

Accessories

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

Warranty Information

Roots URAI DSL blowers are backed by a 2-year warranty with an additional 6 months covering shipping and construction where applicable. Roots synthetic oil is recommended for maximum lubrication performance and long-term blower reliability. Oil sight glasses are provided for accurate oil level monitoring during operation.