Lancaster Products K-Series Mixers’ counter-current mixing action is the most effective mixing technique for consistent uniformity, homogeneity and rapid mix time.

Lancaster Products K-Series mixers are the ideal tool for the preparation of powdered materials. Their high intensive action allows for mixing even the most difficult of materials. Powders, slurries, and pastes (with or without water or binders) can be mixed in extremely short cycle times. Dissimilar powders, differing in density and/or ratio in a formulation, are easily blended into homogeneous mixtures.

The K-Series line of mixers excel in producing highly repeatable homogeneous mixes and pellets.

K3-K3.5 High Shear Mixers: [DOWNLOAD PDF]

  • Well-suited for small production work or prototyping
  • Working Capacity: 2.5 cu.ft (70 L) to 6 cu. ft. (170 L)

K4-K10 High Shear Mixers: [DOWNLOAD PDF]

  • Larger capacity mixers suitable for high throughput applications
  • Working capacity: up to 210 cu. Ft/6000L


Whether you are developing a new process or looking to improve a current one, using a Lancaster Products High Shear Mixer can transform your mixing process. Our mixers can be used to achieve multiple objectives, including mixing cycle times, moisture and air entrainment, particle size distributions, yields, surface draw-down, pluming action, and tip speed requirements.

Processing times can be greatly reduced while providing a more homogenous batch (mix) using a Lancaster Mixer.

  • Free-flowing powders & granular materials can reach the desired homogeneity within 1 minute*
  • Mix-granulation applications are generally completed within a cycle of 6 minutes or less*

*based on results achieved in both lab and production environments

The counter-current mixing action in all Lancaster Mixers provides:

  • Minimized quantity of additives used in formulations
  • Reduced reaction times due to increased surface area and effective dispersion
  • Consistent, repeatable mix quality from batch to batch

*Partial batches down to 1/3 rated capacity can be handled without affecting mix quality



Mixer Pan Tool Action

Lancaster Products high intensive mixers handle a full gamut of materials – from powders to slips and slurries, to taffy-like materials with viscosities exceeding 1,000,000 CP.


Blend, pelletize, Granulate, Slurry, Disolve, De-Dust and React – all in the same machine.


There are effectively no dead corners or unswept surfaces where ingredients can lodge. The unique combination of rotating pan, side scraper, and counter-rotating plow effectively eliminates all dead zones.


Mixer Pan Tool Action

Process times can be greatly reduced while providing a more homogeneous batch. Our experience in both lab and production environments is that free-flowing powders and granular materials can reach desired homogeneity in under a minute.

Comparable mix quality was achieved with 10 to 20 minutes of mixing in a Lancaster K-Series mixer as 3 to 6 hours of ball milling time.



In most cases, because the Lancaster counter-current mixing action is so thorough, less binder materials or water is required.


The plow and side scraper also provide for continual material removal from the pan bottom and sidewall surfaces.


Lancaster Application Engineers design toward many goals, including: mixing cycle times, moisture and air entrapment, particle size distributions, surface draw-down, pumping action and tip speed requirements.


The intensity and type of mixing action can be controlled through the use of various style mixing rotors and speeds. Our technology coats pellets, de-fibers, de-lumps, fluffs and slurries.


K-Series High Shear Mixers


Model Total pan Vol. Cubic Ft. Approx. Working Volumes* Approx. Weight in Pounds
Cubic Ft. Litres
K1-LAB 0.5 0.3 8.5 1,100
K3 5 2.5 70 3,000
K3.5 12 7 198 3,500
K4 25 14 400 6,000
K5 40 24 680 8,500
K6 75 45 1,270 13,500
K7 115 70 2,000 18,500
K8 175 105 3,000 24,000
K9 265 155 4,400 32,000
K10 370 210 6,000 42,000
  • Actual batch capacity depends on loose bulk density and/or mix consistency


Vertical axis horizontal pan mixing is the preferred design of the Lancaster Mixers. This positive and very efficient design of the pan gear drive ensures that the maximum amount of energy output is imparted into the mixing action. Pan rotation speeds can also be calculated for maximum material process effect without requiring higher speeds to move material to a higher elevation for proper mixing. The horizontal pan provides maximum production volume while minimizing contamination of the upper pan seal. The corresponding horizontal surfaces of our Lancaster Mixers provide easier and more efficient maintenance of the equipment.

The slow speed plows of the horizontal design of our Lancaster Mixers not only enhance the mixing process, but they also provide for continual cleaning of the pan bottom and assist in material discharge. The actions of our plows eliminate the duties of cleaning and discharge by a rotor and a stationary bottom scraper.


The primary mixing element of all Lancaster Products K-Series mixers is the single piece counter-rotating high-speed rotor. The design of the mixing rotor will vary depending upon the particular process requirements.

The single piece base rotor construction helps maintain rotor balance after blade replacement. The rotor is driven by an easily accessible V-belt drive system. The drive motor can be single speed, multiple speed, or variable speed depending upon specific processing requirements. The drive guard fully encloses the top portion of the motor and the rotor spindle.


A high-quality gear-motor drive is mounted on top of the mixer structure. This unit turns the slow speed secondary mixing plows. These wear-resistant plows continually sweep the entire surface of the pan bottom.

This efficient slow-speed sweeping action prevents material from accumulating on the pan bottom and also provide enhanced mixing action and faster mixer discharging.

Lancaster Products
920 Mechanic Street
Lebanon, PA 17046

Local: 717.273.2111
Toll Free: 800.447.7351

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Office Hours:
Mon - Fri: 8:00 am - 5:00 pm

Maintenance Bulletin: Rotor Wear and Replacement in Industrial Mixers

The high-speed rotor is the primary mixing and pelletizing tool in industrial high shear mixers and in many ways, it is the most utilized part of the machine. But rotor wear is also a good leading indicator of your machine’s overall operating condition as it is a direct result of material processing. Chances are, if the rotor is worn, there is other preventative maintenance to be done.

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What Preventative Maintenance Will Prolong the Life of My Mixing Equipment?

Industrial mixers are built to run and withstand a great deal of abuse, however, regular preventive maintenance efforts can help keep your mixer running like new. The two most critical components that can affect the life of your mixer are lubrication and inspection of working tools. Below is an overview of the in-depth information provided in our full maintenance schedule available for download below.


Lubrication: Proper lubrication can encompass multiple areas on your mixer, not just the shaft seals of the mixing tool. Lubrication of all seals as well as drive gears, discharge valves and other locations where bearings are utilized is the best way to extend the life of your mixer. Automated lubrication systems on larger production mixers help maintain proper lubrication intervals, but regular visual inspection should be scheduled to assure the system is working properly.

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