Direct Drive Impellers and Blowers

Centrifugal BlowersForemost Machine Builders, Inc. has a complete line of direct drive impellers and blowers that are designed to provide rapid, automatic unloading of all plastic raw materials in pellet or granular (regrind) form. The direct drive designs operate at lower RPM’s than belt drive units, resulting in considerably lower sound levels. Yet conveying rates are equal to, or better than, comparably horse powered belt drive machines. The simplified design requires much less routine maintenance and, with fewer components, assures trouble-free operation and long life.

These units can be supplied with material pick-up “suction lances”. They are ideal for emptying bulk cartons and drums, feeding storage bins, loading machine hoppers, and other in-plant conveying applications. They are easily portable and are designed for continuous operation.

In other applications, and with all other units, a chute or similar device is required to direct material into the inlet of the blower or impeller. They are commonly used to unload grinders, granulators, blenders, and material storage tanks.
Under normal circumstances, a cyclonic air separator is required at the material receiving location.

Foremost has been building blowers for the plastics industry since the 1960’s. We offer three different types of direct drive blowers.

The DI series of impellers is available in a 1 and 2 HP arrangements and is used in applications where low CFM (under 250) and small conveying lines (no more than 3”) are required.

The DB series of blowers is available in a 2, 5 and 10HP arrangements and is used in applications where higher CFM (up to 1730) and larger conveying lines (up to 6”) are required.

Conveying Rates In Pounds Per Hour

(The following results were obtained by Foremost lab tests with virgin pellets)

MODEL 25 FT 50 FT 75 FT 100 FT 150 FT 200 FT
DI-1 500 300 NA NA NA NA
DI-2 1,500 1,200 750 350 NA NA
DB-2 2,000 1,800 1,200 500 NA NA
DB-5 3,000 2,800 2,500 2,400 1,500 NA
DB-10 3,500 3,000 2,800 2,600 2,000 1,000

Based on 15 ft. lift, (3) 90- degree elbows and all rigid tubing on conveying line.


MODEL HP Inlet Outet CFM
DI-1 1 3" ID 2 3/16" OD 230
DI-2 2 3" ID 2 3/16" OD 242
DB-2 2 6" ID 5" OD 725
DB-5 2 6" ID 5" OD 1,050
DB-10 5 5 3/4" ID 6" OD 1,730

Standard Features

  • Direct drive.
  • 3,450 RPM motor.
  • Cast aluminum impeller.
  • Cast aluminum housing.
  • Cast aluminum inlet plate.
  • Safety Switch protected.
  • Combination motor starter with through the door disconnect.
  • All mounted on a rigid base.

Available Options

  • Stainless steel construction.
  • Supplied as an integral part of grinder or blender.
  • Casters

Direct Drive Impellers and Blowers

Contact us today: - Tel: 973.227.0700

We accept the following major credit cards:

Plastic Process Equipment


Plastic Process Equipment

23 Spielman Road, Fairfield, New Jersey, USA, 07004-6155
Tel: 973.227.0700 ~ Fax: 973.227.7307 ~ Email: