ROOTS-FLO® Positive Displacement Blowers

Patented ROOTS-FLO® blowers are heavy duty rotary units in a compact, sturdy design, engineered for reliable pneumatic conveying of grain and similar product.

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Features

Impellers-Machined and dynamically balanced ductile iron impellers with integral shafts per ASTM 536 Class 60-45-12 and 80-60-3 for additional strength for those maximum load operations
Bearings-At maximum load and speed the extra capacity cylindrical roller drive shaft bearing has 2.5 to 3 times longer bearing life than the competition
Gears-Spur type SAE 8620 steel carburized and ground to 58-62RC for tough continuous operation
Seals-Main seals are piston ring/Viton Lip and the driveshaft has a Viton Lip seal. All are proven ROOTS™ Blowers & Compressors design

Engineering Resources

Engineering resources:
Dimension drawings: rootsflo_drwg_dim_imp.pdf,
assembly drawings: rootsflo_drwg_assmbly.pdf,
parts lists: rootsflo_tab_partslist.pdf

Warranty

gts_5001_020107.pdf

Operating Principle

Two figure-eight lobe impellers mounted on parallel shafts rotate in opposite directions. As each impeller passes the blower inlet, it traps a finite volume of air and carries it around the case to the blower outlet, where the air is discharged. With constant speed operation the displaced volume is essentially the same regardless of pressure, temperature or barometric pressure. Timing gears control the relative position of the impellers to each other and maintain small, but defined, clearances. This allows operation without lubrication being required inside the air casing.

rotary_lobe_blwr_princ.pdf

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