Type 1 : Angled Tooth Blade or Cowles Style

Popular blade for dispersion work. Primarily a high shear blade. Efficient design which has proven to be an excellent blade for shear. There are newer technologies that provide more pumping with shear. Stock sizes from 1″ and larger. We recommend sizes of 1.5″ and larger.

Type 2: High Vane Blade or G Style

High pumping action. This blade is for mixing on a high speed disperser with minimal shear and heat build-up. This blade is popular in the mixing and let down of coatings. It is available in sizes from 2″ and up.

Type 3: Combination Blade or E Style

This blade offers a combination of high shear along with excellent batch movement and cutting of high viscosity materials. It is excellent for high solids as well. Available in sizes from 2″ and up.

Type 4: Aggressive Tooth Blade or K Style

This blade works well on materials difficult to de-agglomerate. It is available in sizes from 2″ and up.

Type 5: Pick Blade

This blade is perfect for cutting in or shredding rubber, a wax and other soft materials that tend to gum up on standard impellers. Unique design features a knife (or pick) extending out from the blade, alternating with vertical teeth. This blade is available in sizes from 2″ and up.

Type 6: Rectangular Tooth Blade or Hockmeyer Style

This is another popular all around blade for high speed dispersion applications. The rectangular tooth pattern does not disperse any differently from the Type 1 style. However, the extra meat on the tooth can make the tooth of this blade more resilient in certain applications.

Type 7: The Polyblade® – Norstone® Polymer Impeller

The Polyblade impeller is the answer to the negative issues which are inherent in metal blades when dispersing certain types of slurries. It is constructed from a wide variety of polymers depending upon the application:

  • Polyurethane for maximum abrasion resistance in a non-solvent slurry;
  • Anti-static polyethylene for solvent slurries;
  • PTFE for high temperature slurries;
  • Nylon for chemical resistance;
  • Polypropylene for FDA and Pharmaceutical applications
  • Available sizes range from 1-1/4″ and up

Features of the Polyblade: Abrasion Resistance; Safety; Low Heat; Low Maintenance; No metal contamination; Dual Sided; Won’t Bend or Deform; High Value. This unique design improves production time by efficiently pumping the material so that the slurry sees the shear zone of the blade more frequently than with any other style of blade. The batch will run cooler. Light weight materials are more easily incorporated. Heavy settling material is lifted off the bottom. This blade cannot be put on backwards. Best of all this blade never gets sharp and so a hazard is removed from the plant or lab.

Type 7EP POLYBLADE with Embedded Plate

The POLYBLADE is now available with a dynamically balanced metal plate embedded in the center to eliminate the need for stiffening plates that are not balanced. The blade now has NO exposed metal parts and is a one piece assembly which is especially helpful in confined space entry situations.

Type 7SPUP TURBO POLYBLADE with Shear Pegs

Standard POLYBLADE in polyurethane with replaceable shear pegs molded into each side of the blade for more aggressive dispersing and lower amp draw. This blade will equal or improve upon the performance of a metal blade in most applications and remove a safety hazard from the plant since it never gets sharp. This blade will outlast a metal blade far beyond the price difference.

Type 7SPAS: Anti-Static Turbo Polyblade
This is the Turbo Polyblade designed for use with solvents.
Outer stiffening plates must be used.

Type 7HS: Anti-Static HS Polyblade
The most aggressive Polyblade style available with scoops and teeth.  Never gets sharp, reversible, and long lasting.  Currently available in all material except Polyurethane.  Only needed when extremely difficult agglomerates are present or the blade cannot be raised to one full blade diameter off the bottom.
Outer stiffening plates must be used.

Type 8: Mixed Flow Impeller

A very popular impeller for high speed mixing up to 200 gallons assuring that material is mixed in all directions. Available in regular and high vein with or without collar and set screw. This blade is more effective than a standard 3 bladed prop. The blade should be sized to be 1/3-1/2 the diameter of the tank.

Type 9: IT Blade

The louvers formed in the plane of the blade provide maximum pumping action giving positive over all material movement with excellent top to bottom flow. Excellent for lifting quick settling materials off the bottom of a tank in medium to high viscosity materials. The IT is for agitation; positive but gentle material flow; low shear, smooth fast mixing without air inclusion.

Type 10: ITC Blade

The louvers formed in the plane of the blade provide maximum pumping action giving positive over all material movement with excellent top to bottom flow. They are excellent for lifting quick settling materials off the bottom of a tank in medium to high viscosity materials. The ITC is for shear and agitation. Positive material movement; good blending and shear for the more fibrous additives and fillers.

Type 11: ITT Blade

The louvers formed in the plane of the blade provide maximum pumping action giving positive over all material movement with excellent top to bottom flow. They are excellent for lifting quick settling materials off the bottom of a tank in medium to high viscosity materials. The ITT is for high shear and agitation. High positive material movement. Recommended where high shear is required for a rapid and smooth blend or when high shear is not required but is not detrimental. Blade should be 1/2 – 1 full diameter of the bottom of the tank with at least twice as much above the blade or it will suck in air. Tip speed should be 4000 – 4500 fpm. Blade should be 1/3 the tank diameter for medium viscosity and 1/2 the tank diameter for high viscosity.

Rules for the ITT blade are as follows:

  • 1/2 – 1 full blade diameter off bottom with 1.5 – 2 blade diameters of fluid above the blade
  • 4000-4500 fpm tip speed
  • blade size should be 1/3 diameter of tank for standard materials; high viscosity can take up to 50% the diameter of tank

Type 12: Propeller

This is a very common mixing blade similar to a boat prop which mixes material in one direction. It is a classic design used in many applications. However, there are many blade styles currently available which are superior to this technology. They have limited reach and get very heavy as they get larger. The left handed design is good for de-aeration.

Type 13: Standard Axial Flow Turbine

This is the most common slow speed mixing blade. The arms of the blade are usually set at a 45 degree angle. Several blades can be stacked on one shaft so that this blade works well in a tall tank. The blade pushes product down and then out creating a rolling action. It can be designed to pump up. A Split Hub Design is available, as well as designs for installing in a tank with limited access opening.

Type 14: High Efficiency Axial Flow Turbine

This is one of the newer designs in mixing blades. It has a similar action to the Type 13 Standard Axial Flow Blade but uses less energy. It is higher price but works well at slow and high mixing speeds in viscosities less than 1000 cps. A Split Hub Design is available, as well as various materials of construction.

Type 15: Straight Radial Turbine

This blade moves product to the outside only. The arms of the blade are set at 90 degrees. This style is commonly used at the bottom of the shaft of a square shaped tank. It draws a lot of power and does not move product efficiently. A Split Hub Design is available, as well as various materials of construction.

Type 16: Curved Radial Turbine

This blade moves the product into the center and then pushes it out to the sides with an aggressive whipping action. It has a high amp draw and provide good mixing of particles. The blade can be expensive compared to other types but is excellent for sweeping corners of a square tank. A Split Hub Design is available, as well as various materials of construction.

Type 17: Bung Hole Blade or Collapsible Blade

This blade is designed to fit through the small bung hole in a closed head drum. As the shaft spins the end pieces (blades) open up into the shape of an axial flow blade. It is critical that the shaft speed and horsepower can move the blade fast enough to cause it to open. This blade attaches to the shaft with collar and set screw.

Type 18A: Butterfly Blade

This blade is used for mixing high viscosity materials. A scraper blade can be attached to the blade for scraping the side or bottom of a tank.

Type 18B:

Lab version of Type 18A

Type 19: Bowtie Blade

This blade is another style which is used for mixing high viscosity materials.

Type 20: TRN Blade

This blade is a new style of mixing blade. Although it looks simple, this blade has an unexpectedly powerful ability to mix low to medium viscosity materials. This blade runs at low tip speeds. Two blades may need to be required to ensure that product at the bottom is incorporated into the batch.

Type 21: Plunger Blade

This blade is used for mixing. Material of construction is Zinc-Aluminum Alloy complete with shaft. Sizes available are 1′, 2″, 3′, 6″, 8″ and 12″. This blade is very economical.

Type 22: PolyAxial Flow Blade

High Speed axial flow blade for abrasive products, high viscosity products and products requiring non-metal. This blade is also good for containers that need to have the bottom scraped since the turbines extend below the hub permitting the bottom to be scraped.

Type 23: Bung Hole Blade

This blade is another style of bung hole blade that provides radial and axial flow. It has a serrated bottom to scrape if necessary.

Type 24: Banana Blade

This blade is used for mixing inside of flasks and other long neck type bottles.

Type 25: D Blade, Multi Layer Ring Style

Also known as Ring Blade, this blade consists of three plates welded together with “cutting teeth” in between. Provides excellent shear using the Venturi principal. Requires a 5800 fpm +/- 5% tip speed. Trial sizes available.

Rules for the D blade:

  • 1/2 – 1 full blade diameter off bottom with minimum of 2 blade diameters of fluid above the blade.
  • 5800 fpm +/- 5% tip speed
  • Blade size should be 1/4 diameter of tank for standard materials, high viscosity can take up to 40% the diameter of tank.
  • Viscosity Range: 1,000 CPS to 10,000 CPS. We have used the D blade up to 50,000 CPS and lower than 1,000 CPS depending upon specific gravity.

Type 26: Cement Mixer Blade

Also known as “coverings” blade.  This blade is used mostly with hand held mixers for stirring heavier products such as flooring compounds, cement, ceramic, caulks, and oils.

Type 27: Anchor Blade

The anchor blade can be used as shown or have additional vertical resistant bars to be made into what is called a gate blade. This blade is excellent for moving high viscosity material in a radial direction and also good for keeping the outer areas of the batch in motion.

Type 28: CSI Ring Blade

Also known as Ring Blade, this blade consists of three plates welded together with “cutting teeth” in between. Provides excellent shear using the Venturi principal. Can be difficult to clean and difficult to determine when worn. It is also very expensive but still very effective.

Type 36 Disk Turbine (Rushton style)

This blade is primarily used for mixing gases or gases with liquids.