Roots™ Universal RAI Blowers

For assistance in sizing a blower, please contact us and provide the following information:

  • CFM and PSI required
  • Altitude of installation if over 2000 ft.
  • Maximum ambient temperature

Or let us know your PSI requirement:

  • The maximum water height over your diffusers or deepest point under water where air is being discharged
  • The diameter and length of your diffuser piping
  • The quantity and type of diffusers, if known
 

BLOWER OVERVIEW



Standard URAI Rotary
Positive Displacement Principle

Roots Blower Oil and Grease

Detailed blower curves

 

Roots URAI blowers are heavy duty blowers designed with detachable rugged steel mounting feet which permit easy in-field adaptability to either vertical or horizontal installation requirements in any one of four drive shaft positions.

Note when referring to Roots URAI blowers, "vertical" and "horizontal" refers to the plane of the shafts, not the inlet and outlet port, i.e. a URAI mounted vertically has its inlet and outlet ports positioned horizontally.

The basic URAI model has a one-piece cast iron casing and cast iron involute impellers. Carburized and ground alloy steel spur timing gears are secured to the steel shafts with a taper mounting and locknut. Oversize antifriction bearings are used, with a cylindrical roller bearing at the drive shaft to withstand V-belt pull. The URAI features thrust control with splash oil lube on the gear end and grease lube on the drive end. URAI DSL model blowers with Double Splash Lube on both ends are available at optional cost.

Roots URAI blowers are warranted for two years subject to conditions and terms set forth by the factory. We strongly recommend the use of lubricants and grease specifically recommended by Roots for use in their blowers to keep them in peak operating condition. Roots approved lubricants.

 

PURCHASE ROOTS™ UNIVERSAL RAI BLOWERS


ITEM NUMBER DESCRIPTION PRICE
URAI BLOWERS

QTY URAI22

1" NPT, Shaft 0.625", 12 PSI max Call

QTY URAI24

2" NPT, Shaft 0.625" , 7 PSI max Call

QTY URAI32

1-1/4" NPT, Shaft 0.750" , 15 PSI max Call

QTY URAI33

2" NPT, Shaft 0.750" , 12 PSI max Call

QTY URAI36

2-1/2" NPT, Shaft 0.750" , 7 PSI max Call

QTY URAI42

1-1/2" NPT, Shaft 0.875" , 15 PSI max Call

QTY URAI45

2-1/2" NPT, Shaft 0.875" , 10 PSI max Call

QTY URAI47

3" NPT, Shaft 0.875", 7 PSI max Call

QTY URAI53

2-1/2" NPT, Shaft 1.125" , 15 PSI max Call

QTY URAI56

4" NPT, Shaft 1.125" , 10 PSI max Call

QTY URAI59

4" NPT, Shaft 1.125", 7 PSI max Call

QTY URAI65

3" NPT, Shaft 1.375", 15 PSI max Call

QTY URAI68

5" NPT, Shaft 1.375", 12 PSI max Call

QTY URAI615

6" FLG, Shaft 1.375", 6 PSI max Call

QTY URAI76

4" NPT, Shaft 1.562", 15 PSI max Call

QTY URAI711

6" FLG, Shaft 1.562", 10 PSI max Call

QTY URAI718

8" FLG, Shaft 1.562", 6 PSI max Call
URAI - DSL BLOWERS

QTY URAI32DSL

1-1/4" NPT, Shaft 0.750", 15 PSI max Call

QTY URAI33DSL

2" NPT, Shaft 0.750" , 12 PSI max Call

QTY URAI36DSL

2-1/2" NPT, Shaft 0.750" , 7 PSI max Call

QTY URAI42DSL

1-1/2" NPT, Shaft 0.875" , 15 PSI max Call

QTY URAI45DSL

2-1/2" NPT, Shaft 0.875" , 10 PSI max Call

QTY URAI47DSL

3" NPT, Shaft 0.875" , 7 PSI max Call

QTY URAI53DSL

2-1/2" NPT, Shaft 1.125" , 15 PSI max Call

QTY URAI56DSL

4" NPT, Shaft 1.125", 10 PSI max Call

QTY URAI59DSL

4" NPT, Shaft 1.125" , 7 PSI max Call

QTY URAI65DSL

3" NPT, Shaft 1.375" , 15 PSI max Call

QTY URAI68DSL

5" NPT, Shaft 1.375", 12 PSI max Call

QTY URAI615DSL

6" NPT, Shaft 1.375", 6 PSI max Call
J Models available upon request