ROOTS™ Universal 59 URAI

Model: 59 URAI

The ROOTS™ Universal RAI blower Model 59 URAI is engineered for high-capacity airflow performance with balanced bi-lobe involute impellers, carburized alloy steel timing gears, and oversized anti-friction bearings. Designed for airflow to 857 CFM, the unit incorporates grease lubrication on the drive end, splash oil lubrication on the gear end, and a rigid cast iron casing for continuous-duty industrial blowers operation across Frames 22 thru 718.

Key Specifications

Max Flow

857 CFM

Max Pressure

7 psi

Max Vacuum

15" Hg

Maximum RPM

2850 RPM

Minimum RPM

Manufacturer

763 RPM Roots

IO&M Manuals

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Literature

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Technical Details

Universal RAI Blower

Roots Blower Model 59 URAI

Flow Range: to 857 CFM

Max Δ Pressure: 7 psi

Max Δ Vacuum: 15″ Hg

Maximum RPM: 2850

Minimum RPM: 763

Max ΔT: 225˚F

Connection Size: 4″ FPT

Shaft Diameter: 1.125″

Drive End Lubrication: Grease

Gear End Lubrication: Oil

Required Oil – Horizontal Unit: 27.6 ounces

59 URAI Blower Design & Construction Features

Steel detachable mounting feet

Rigid one-piece cast iron casing

Anti-friction bearings

Thrust control configuration

Splash oil lubricated spur timing gears

Standard pipe size connections

Balanced precision-machined bi-lobe impellers

Ground steel shafts

Cast iron involute impeller construction

Cylindrical roller drive shaft bearing for V-belt load handling

Carburized and ground alloy steel timing gears with taper-lock mounting

Adaptable vertical and horizontal installation capability

Compatible with silencers, relief valves, filters, couplings, and extended bases

Warranty Information

ROOTS™ Universal RAI® blowers are covered by a 2-year operational warranty with an additional 6 months for shipping and construction periods where applicable. ROOTS synthetic oil is recommended to support longer lubricant life and dependable operating performance.