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Universal RAI (URAI) Dual Splash Lubricated (DSL) Blower

Heavy-duty, versatile, bi lobe rotary blower

The ROOTS® Universal RAI™ DSL (Dual Splash Lubricated) blower is a heavy‑duty, versatile rotary blower designed for flexible installation and dependable performance. Detachable, rugged steel mounting feet allow easy in‑field adaptation to vertical or horizontal configurations, with four available drive shaft positions: right, left, bottom, or top.

The DSL model features Dual Splash Lubrication on both the gear end and drive end, supporting cooler operation and greater reliability.

  • Pressures to 15 psig (1034 mbar)
  • Vacuums to 16” Hg (539 mbar)
  • Flows to 1740 cfm (2956 m3/hr)
  • Available with metric drive shaft and pipe connections
  • Detachable steel mounting feet
  • Rigid one-piece cast iron casing
  • Anti-friction bearings
  • Splash lubricated spur timing gears and drive end bearings
  • Connections in standard pipe sizes
  • Versatile Mounting Options: Four drive shaft positions—right, left, bottom, or top.
  • Durable Construction: Compact, sturdy design supports continuous service within rated speed and pressure limits.
  • Robust Components: Cast iron casing, alloy steel gears, and cast iron impellers.
  • Enhanced Bearing Strength: Oversized antifriction bearings and cylindrical roller bearing withstand V‑belt pull.
  • Efficient Lubrication System: Dual splash lubrication on both ends enhances gear and bearing life.
  • Quality Assurance: Protective paint, testing, and careful packaging maintain product integrity.
  • Customizable Accessories: Wide range of accessories available to support performance needs. 

How Dual Splash Lubrication Helps Create a Quiet DSL Blower

The Universal RAI DSL blower uses Dual Splash Lubrication on both the gear end and drive end. This lubrication method supports quieter, smoother operation by:

  • Reducing friction between gears and bearings
  • Supporting cooler operation, which helps maintain stable running conditions
  • Minimizing mechanical noise sources during continuous duty
  • Improving gear and bearing life, reducing noise caused by wear
  • Supporting smoother timing gear engagement