Fans - Small: Type MR

Smal Fans

Small Exhaust Fans - Type MR: Type MR fans are direct drive only and are designed for air or very light (fine) dust loadings. They are fabricated from heavy gauge welded steel. The scroll wrap is continuously welded to the side plates. These fans are dynamically balanced to highly controlled design specifications for smooth operation. They are built to last.

Fans in stock for fast delivery.

Optional Construction:

Heavy Abrasive Materials. N.R. Murphy can provide extra heavy housing and wheel construction with oversized shaft and bearings for applications where large concentrations of heavy abrasive materials are present.

Spark Resistance. For spark resistant requirements the following constructions are available:

  • Type A: All parts of the fan in contact with the air or gas being handled are made of non-ferrous material.
  • Type B: The fan has an entirely non-ferrous wheel and non-ferrous ring around the opening through which the shaft passes.
  • Type C: The fan is constructed so that a shift in the wheel or shaft will not permit two ferrous parts of the fan to rub or strike.

Please note that the bearings will not be placed in the air or gas stream. The user must electrically ground all fan parts.

Available Sizes:

Type MR
Size 4 Size 5 Size 7
Wheel Diameter: 9 1/4" 12 1/4" 13"
Outlet Area: 0.1300 sq. ft. 0.1364 sq. ft 0.1964 sq. ft.
Inlet Diameter: 4" 5" 7"
Inlet Area: 0.0873 sq. ft. 0.1364 sq. ft 0.2673 sq. ft.
Wheel Circumference: 29.05" 38.48" 40.84"
� Base dimensions may vary slightly with rotation �


Performance Charts:


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