The headplates, gear cover, end cover and rigid, one-piece casing are grey iron. RCS rotary blowers are heavy-duty units designed with integral-shaft ductile iron impellers having an involute profile. The top shaft is extended for drive on side outlet blowers, and either shaft can be extended for drive on top or bottom outlet blowers. All frame sizes are designed with detachable rugged steel mounting feet which permit in-field adaptability to either vertical or horizontal installation requirements. RAM rotary blowers incorporate thrust control, with splash oil lubrication at both ends of the blower. A hydrodynamic seal on the drive shaft prevents shaft seal oil leaks. Piston rings reduce air leakage through the shaft openings in the headplates, and lip-type oil seals prevent lubricant from entering the air chamber. Cylindrical roller bearings are used on all units.

Carburized and ground alloy steel spur timing gears are taper mounted on the shafts, secured with a locknut. The headplates and rigid, one-piece casing are grey iron, while the drive end cover and gear cover are aluminum. RAM ™ rotary blowers are heavy-duty units designed with integral-shaft ductile iron impellers having an involute profile. Available accessories include driver, relief valve, inlet and discharge silencers, inlet filter, check valve, extended base, v-belt or flexible coupling and drive guards After standard tests, the unit is sprayed with a protective paint and boxed or placed on skids. The Universal RAI features thrust control, with splash oil lube on the gear end and grease lube on the drive end. Oversized antifriction bearings are used, with a cylindrical roller bearing at the drive shaft to withstand V-belt pull. Carburized and ground alloy steel spur timing gears are secured to the steel shafts with a taper mounting and locknut. The basic model consists of a cast iron casing and cast iron involute impellers. The compact, sturdy design is engineered for continuousservice when operated in accordance with speed and pressure ratings.

Because of the detachable mounting feet, these units can be easily adapted to any of four drive shaftpositions - right hand, left hand, bottom or top. Universal RAI blowers are heavy duty blowers designed with detachable rugged steel mounting feet that permit easy in-field adaptability to either vertical or horizontal installation requirements. ROOTS ™ UNIVERSAL RAI ® Rotary Positive Displacement Blowers

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