Howden Roots® Rotary Positive Displacement Air Blower

Universal RAI™ Series

• ​Since 1854, Howden has been continuously manufacturing and developing the rotary positive displacement air blowers under the industry-respected name ROOTS™.
• All Universal RAI™ (URAI) series blowers are heavy duty rotary blowers in a compact, sturdy design engineered for
  continuous duty and maximum reliability.
• These blowers have a time tested lubrication system. Howden ROOTS™ exclusive ‘figure-8’ gearbox design improves oil distribution to the timing gears and lengthens bearing life.
• This series features a grey iron casing, carburised and ground alloy steel spur timing gears secured to steel shafts
  with a taper fit and locknut, and grey iron involute impellers.
• Oversized anti-friction bearings are used, with a heavy-duty cylindrical roller bearing at the drive shaft to withstand V-belt pull. Viton™ lip seals maintain proper lubricant at the bearings.