Brochure

All Universal RAI (URAI) series blowers are heavy duty rotary blowers in a compact, sturdy design

engineered for continuous duty and maximum reliability. These blowers have a time tested lubrication

system. GE’s exclusive “figure-8” gearbox design improves oil distribution to the timing gears and

lengthens bearing life.

This series features a grey iron casing, carburized and ground alloy steel spur timing gears secured to

steel shafts with a taper fit and locknut, and grey iron involute impellers. Oversized anti-friction bearings

are used, with a heavy duty cylindrical roller bearing at the drive shaft to withstand V-belt pull. Viton

™

lip seals maintain proper lubricant at the bearings

Universal RAI Series Rotary Positive Displacement Blowers

Universal RAI Blower

Frame Sizes 22 thru 718

The standard URAI blower features convenient grease lubrication on the drive end.

The feet permit easy in-field adaptation to either vertical or horizontal installation

requirements and any of four drive shaft positions – top, bottom, right or left hand.

All frame sizes are center-timed to allow for rotation in either direction.

Universal RAI-J WHISPAIR Blower

Frame Sizes 33J thru 56J

GE refined the standard URAI line using computer-aided design techniques

to incorporate the Roots exclusive WHISPAIR jet. The WHISPAIR jet uses shock

suppression techniques for noise and pulsation reduction. This exclusive

WHISPAIR feature can reduce noise 3-5 dB on typical installations. Like the

standard URAI blower, the URAI-J features universal detachable steel mounting

feet to permit easy in-field adaptation to any of four positions and grease

lubrication on the drive end.

Universal RAI-G Gas Blower

Frame Sizes 32GJ thru 615GJ

URAI gas blowers feature mechanical seals and Viton

™

o-rings. The seal system is

designed to meet or exceed gas industry safety standards, including provisions for

purge gas in the headplates. The URAI gas blower uses detachable steel mounting

feet for adaptation of drive shaft position to meet vertical or horizontal installation

requirements.

Universal RAI-J DSL Blower

Frame Sizes 33J thru 56J

This URAI blower combines the WHISPAIR design with the dual splash lubrication

feature to offer the longest life and quietest performance of the URAI series.

Universal RAI DSL Blower

Frame Sizes 32 thru 615

This URAI blower features Dual Splash Lubrication (DSL). There is splash lubrication

at the gear end and the drive end. The drive end has two shaft-mounted slingers

and the gear end features GE’s exclusive “figure-eight” gearbox design that work

together to improve oil distribution and to maximize gear and bearing life. The oil

reservoirs feature sight glasses for accurate oil level confirmation.