The Maximum-Duty Aerolock is engineered for continuous, 24-hour service in applications with pressure differentials up to 20 PSI. The wear life is even more outstanding when the differential is limited to 15 PSI. It is commonly used in some of the most hostile environments.

The Chemical and Mineral Industries order the Maximum-Duty in our Standard 4 configuration for handling abrasive powders. The Standard 4 Aerolock has a hubbed rotor to keep material away from the end plates. It utilizes a packing gland seal, an industry preference because of adjustability. Optional air purge seals provide extra seal and bearing protection.

Also ordered by the these industries is our Standard 3 Maximum-Duty Aerolock for materials that tend to build up on the housing, requiring a relieved tip rotor. Examples include calcium carbonate, sodium bicarbonate, soap pellets, and sodium tripolyphosphate.

Advantages offered by the Maximum Duty Aerolock

• 10 Blade Rotor which maintains a minimum 3-blade labyrinth seal
• The Maximum Duty Aerolock is available in numerous configurations to battle abrasive environments.

Features

• Housing and end plates
  The housing and end plates are machined from castings and are made of wear iron or stainless steel. The shear action inlet reduces stress on the rotor and housing. They have round or square flanges and can have custom coatings applied to interior surfaces for demanding applications.   These components can be coated for increased longevity.
• Bearings - thrust end
  The radial-thrust, tapered roller bearing assembly is preloaded to provide minimum rotor deflection. This results in close rotor clearance to maximize wear life. Undesirable movement along the longitudinal axis is prevented by the collar which locks the bearings to the shaft. A grease fitting is provided for ease of maintenance.
• Bearings - drive end
  Tapered roller bearings used in a preloaded carriage provide precise shaft alignment. The bearing carriage is equipped with grease fittings, making it easy to renew lubrication.
• Seals

• T-3 seal
  The general purpose T-3 seal is used on both ends of the rotor shaft. The assembly is comprised of a Teflon® collar anchored to the shaft and two steel cased quad ring seals which fit over the Teflon® collar. The seals remain stationary while the Teflon® collar rotates with the shaft. The Teflon’s® slick surface allows quad rings to operate in dry mode with good service life.
• Packing gland seal

The packing gland seal uses Teflon® impregnated yarn. As wear occurs, the seal’s effectiveness can be increased by tightening the collar.

• Air purge seals
  The air purge seal is available for severe service applications. Plant air is introduced through end plates and the air diffuser ring. This provides a zone of higher pressure outside the seals than inside the Aerolock.
• Gaskets
  The gaskets provide a positive seal between Aerolock flanges and components directly above and below. They are made of 1/4-inch thick white neoprene and are comprised of sections that interlock to ensure they stay in place and provide an airtight seal.
• Rotors
  The rotors are engineered for rugged applications. The shafts are sized for torsion and bending loads far above standard drive horsepower requirements. Ten blades maintain a minimum three-blade labyrinth seal to minimize air leakage. A choice of rotors allows the MD to be tailored to your application. The hubbed rotor, when used in conjunction with air purge seals, provides longer shaft seal life and less end plate wear, especially in applications with mildly abrasive materials. The open-end rotor with relieved tips is used to reduce drag on materials that tend to build up on the housing and end plates. Materials of construction include steel and stainless steel.

For more information, contact Premier.

Performance Specifications

Aerolock Drive Information

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Maximum-Duty Aerolock Spec Sheet

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