ROOTS™ 56 Universal RAI-G™ Blower

Model: 56 URAI-G

The ROOTS™ 56 URAI-G gas blower is built for high-performance rotary blower and industrial gas handling applications, delivering airflow to 580 CFM, pressure to 13 PSI, vacuum capability to 15" Hg, and operating speeds up to 2850 RPM. Part of the URAI-G Blowers Frames 32 thru 615 series, this unit features mechanical seals, 1/8″ NPT purge ports, splash oil lubricated spur timing gears, precision two-lobe impellers, anti-friction bearings, and a heavy-duty cast iron casing engineered for reliable continuous-duty performance up to 225°F.

Key Specifications

Max Flow

580 CFM

Max Pressure

13 PSI

Max Vacuum

15" Hg

Maximum RPM

2850 RPM

Minimum RPM

763 RPM

Manufacturer

Roots

IO&M Manuals

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Literature

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Technical Details

ROOTS™ 56 URAI-G Blower

Model: Roots Model 56 URAI-G

Flow Range: to 580 CFM

Max Δ Pressure: 13 psi

Max Δ Vacuum: 15″ Hg

Max ΔT: 225˚F

Connection Size: 4″ FPT

Shaft Diameter: 1.125″

Mechanical Seals: Yes

Purge Ports: 1/8″ NPT for buffer or seal gas

Leak Test: 15 psig static leak test

Drive End Lubrication: Synthetic Grease

Gear End Lubrication: Oil

Required Oil for Gear End Horizontal Unit: 27.6 ounces

Required Oil for Gear End Vertical Unit: 16 ounces

Unit Weight: 170 pounds (77.3 kg)

56 URAI-G Blower Design & Construction Features

Mechanical seals

Rigid one-piece cast iron casing

Anti-friction bearings

Splash oil lubricated spur timing gears

Straight precision-machined two-lobe impellers

Ground steel shafts

Detachable steel mounting feet

Standard pipe size connections

1/8″ NPT purge ports for seal gas applications

Warranty Information

ROOTS™ URAI-G blowers are backed by a 2-year warranty with an additional 6 months covering shipping and construction where applicable. ROOTS™ synthetic oil and grease are recommended to maximize lubrication performance, operating reliability, and long-term blower service life.