ROOTS TRI-RAM MODEL 413 RH-2054040, RH-2054050

TRI-RAM 413 is a replacement for the discontinued RAMX 225


Tri-RAM tri-lobe rotary blowers are heavy-duty units with high strength integral-shaft ductile iron impellers designed for maximum efficiency. The blowers feature Roots WHISPAIR discharge design which, when combined with tri-lobe impellers, delivers quieter operation than conventional tri-lobe blowers.

The headplates and rigid, one-piece cylinders are cast iron, and the drive-end and gear cover are aluminum (cast iron for models 722 - 832). Carburized and ground alloy steel spur timing gears are taper mounted on the shafts and are secured with a locknut (bolt for models 826 and 832). Cylindrical roller bearings are used to accept side loads from v-belt drives.

Piston rings reduce air leakage through the shaft openings in the headplates and hydrodynamic oil seals prevent lubricant from entering the air chamber. Tri-RAM blowers incorporate thrust control, with splash oil lubrication at both ends of the blower.

  • Max Flow: 1277 CFM
  • Max Pressure: 15 psi
  • Max Vacuum: 16″ Hg
  • Max Speed: 4750 RPM
  • SHIPPING WEIGHT: 422 lbs
  • SHIPPING DIMENSIONS: 42 × 29 × 26 in
  • MANUFACTURER: Howden Roots

Design Features:

  • Tri-lobe impellers for less vibration and minimal downstream pulse
  • WHISPAIR* discharge design combined with tri-lobe impellers for quieter operation than conventional tri-lobe blowers
  • Carburized and ground alloy steel timing gears for long life and consistent performance
  • Cylindrical roller bearings for longer bearing life
  • Piston ring seals for less air leakage
  • Splash lubrication from oil sumps with sight glasses on each end for easy maintenance
  • Detachable feet and drive shaft extension to adapt to horizontal or vertical configuration

Frame Sizes:



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