Universal RAI-J® Positive Displacement Blowers - Dresser ROOTS Blower

Universal RAI-J®


Patented Universal RAI-J� WHISPAIRTM blowers are heavy duty rotary units in a compact, sturdy design, engineered for continuous service when operated within speed and vacuum/pressure ratings. The basic model features a cast iron casing with a computer-designed cast relief for noise and shock suppression, carburized and ground alloy steel spur timing gears secured to steel shafts with a taper mounting and locknut, and cast iron involute impellers. Oversized anti-friction bearings are used, with a cylindrical roller bearing at the drive shaft to withstand V-belt pull. Detachable rugged steel mounting feet permit easy in-field adaptablility to either vertical or horizontal installation requirements. The Universal RAI-J� incorporates grease lube on the drive end and splash lube on the gear end. ROOTS� exclusive �figure-eight� gearbox design improves oil distribution to maximize bearing and gear life.

  • Flow Rates: 28 - 600 ICFM (47 - 1019 m179;/hr)
  • Pressures: No more than 13 PSI (No more than 896 mbar)
  • Vacuum: No more than 16 INHgV (No more than 539 mbar)
  • Horsepower: 0.6 - 37 bhp (0.44 - 28 kw)


Special Internet Pricing! Please Call for Details 630-372-9222