Wet Mill/Homogenizer for Particle Size Reduction

The Boston Shearmill (BSM) series of inline homogenizers and wet mills surpasses the capabilities of conventional shear pumps and colloid mills by providing very high throughputs at extreme shear rates. They meet the toughest hygienic standards and are 3-A compliant.

Particle size reduction is important in the dairy, food, beverage, and other industries, and this product is a standout. For processes requiring milling of soft particles to <1 micron, or hard particles down to 1-2 microns, the BSM produces superior particle size reduction, often in just a single pass at high production rates.

Wet milling substances with rotor-stator machines provide several advantages. Designed to run 24/7, our wet mill’s mix, disperse, emulsify, pulverize, macerate, crush, homogenize; reduce solids particles with minimal dust formation; and withstand uneven flow patterns, jolts, and pressure fluctuations.

As a result, Admix has hundreds of homogenizer and wet mill installations in place for tomato paste standardization, salad dressing and mayonnaise processing, pet food production, flavor emulsions, pharmaceutical preps, and API blending, polymer blends, and more.

So, want to see the Boston Shearmill in action or take it for a test drive? Admix’s comprehensive mixing equipment services can improve your process and bottom line today. Contact us now for Admix Boston Shear mill.

Admix Boston Shearmill ™ Wet Mill/Homogenizer


Each shear head has a 2-stage rotor turning within a 2-stage stator, with most models featuring 3 heads in series
Low maintenance design for continuous 24/7 duty
Meets 3-A standard #36-01
Over 30 variations of rotor/stator combinations from coarse to ultrafine
Special purpose rotors and stators available to provide low shear or extra chopping where required
Easy-to-clean with no crevices, dead legs, or open threads
Average (mean) emulsion droplets from 0.5 – 3 microns
Solid particle/aggregate particle reduction dependent on durometer of particle
Three distinct series provide a wide range in capacity, power consumption, and tip speed to allow the best results for your process!


First of all, Boston Shearmills is capable of processing very high throughputs at extreme shear rates producing an average mean droplet size of 0.05-3 microns.

Boston Shearmills are constructed of a multi-slot rotor turning at high speeds in close proximity to a multi-port stator. Each shear head of the homogenizer has a double ring design providing two stages of mixing at both the rotor and stator. Most noteworthy, this results in three distinct, high-intensity work zones at each rotor/stator location where the mixture passes between:

  • The first set of rotor slots or teeth and the first ring of slots on the stator
  • The first ring of slots on the stator and the second ring of slots in the rotor
  • The second ring of slots in both the rotor and stator

Finally, the Boston Shearmill models have 3 shear heads, therefore providing 6 mixing stages with 9 work zones to handle your toughest processing needs.