ROOTS™ 33 Universal RAI DSL

Model: 33 URAI DSL

The ROOTS™ 33 Universal RAI DSL blower is engineered for continuous-duty rotary positive displacement performance with dual splash lubrication on both the drive and gear ends for improved thermal stability and bearing protection. Designed with a rigid cast iron casing, precision-machined bi-lobe impellers, and carburized alloy steel timing gears, this URAI DSL blower delivers dependable airflow performance up to 195 CFM and pressures to 10 psi. Its detachable steel mounting feet allow flexible vertical or horizontal installation with right, left, top, or bottom shaft configurations for OEM and replacement blower applications.

Key Specifications

Max Flow

195 CFM

Max Pressure

10 psi

Max Vacuum

15" Hg

Maximum RPM

3600 RPM

Minimum RPM

1090 RPM

Manufacturer

Roots

IO&M Manuals

Download

Literature

Download

Technical Details

Universal RAI DSL Blower

ROOTS™ Model 33 URAI DSL

Product Series: URAI DSL (Dual Splash Lubricated) Blowers

Flow Range: to 195 CFM

Max Δ Pressure: 10 psi

Max Δ Vacuum: 15″ Hg

Max ΔT: 225˚F

Connection Size: 2″ 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: 77 pounds (35 kg)

33 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

Dual splash lubrication system

Figure-eight gearbox oil distribution design

Shaft-mounted oil slingers

3/8″ sight glasses for oil level confirmation

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 plus an additional 6 months for shipping and construction where applicable. ROOTS synthetic oil is recommended for maximum lubricant life and long-term blower reliability. Oil sight glasses are provided for accurate oil level monitoring during operation.