Milling Technology

HCP Immersion Mill

Since its introduction, the Hockmeyer HCP Immersion Mill has been leading the way in milling technology. This continuously evolving product has opened the door to greater productivity in the particle reduction industry. Hockmeyer's patented design uses rapid recirculation to produce 'Homogeneous Batch Development', achieving faster grinds and tighter particle distributions.

The Immersion mill was invented and patented by Hockmeyer in the 1990s to replace the outmoded horizontal milling technologies and three roll mills that process the feedstock very slowly through the shear zone, are cumbersome to disassemble and clean, are labor-intensive, and are fairly inefficient by modern-day standards.  In immersion milling, the feedstock is circulated through a powerful and turbulent shear zone at very high velocity, as fast as 50 passes per hour. This produces very narrow particle size distributions, decreases the bead-to-product ratio necessary for efficient milling, and dramatically increases productivity and throughput.  Over the years, Hockmeyer has continued to improve on the original design by adding more impact points, flow boosters, high-viscosity model (HCPS), and nano-milling features.

The Hockmeyer HCP Immersion Mill utilizes rapid recirculation milling technology to achieve a smaller particle size and tighter particle distribution and is faster than any other technology in the marketplace. This is achieved by pumping the slurry through the media field many more times and more efficiently than any other mill, including basket, horizontal or vertical mills. Circulation can be as fast as 50 passes per hour.

Rapid mixing and milling of raw materials are completed in one tank engaged for the entire cycle. The machine is designed for use in multiple tanks with various capacities.

Covered by one or more of the following patents: 5,184,783; 5,497,948; 5,820,040; 7,175,118; 7,559.493; 7,828,234; 7,883,036; 7,914,200; 8,182,133; 8,376,252; 8,733,677; 9,597,691 B1

Machine Features

  • Multiple tank positions with 360º rotation available
  • Minimal cross-contamination, easy clean-up, and low solvent loss
  • Maximizes color development, strength, gloss, durability, and yield
  • Reduction of process time versus traditional milling techniques
  • Highly efficient using small quantities of media
  • Use media as small as .5 mm and as large as 2 mm
  • Consistent performance
  • Various materials of construction available
  • Tight Particle Distribution
  • Fast processing times
  • High product recovery – reduced raw material loss
Model RECOMMENDED Batch Size Min/Max (Gallons)

Larger batch sizes will require longer milling times

Media Volume (Liters)
Micromill 250 ml / 2 liter 49 ML
HCP - ¼ 1 / 5 0.25
HCP - 1 5 / 20 1
HCP DM 1 3 / 15 1
HCP DM 2.5 20 / 60 2.5
HCP - 2.5 13 / 35 2.5
HCP - 5 35 / 60 4.5
HCP - 10 50 / 150 8
HCP - 20 120 / 250 18
HCP - 40 250 / 600 35
HCP - 60 600 / 800 46
HCP - 80 800 / 1100 63
  • Hockmeyer HCP Quarter Mill


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  • A Hockmeyer employee works on maintenance of a NEXGEN immersion milling machine.

    Field Training & Support

    Hockmeyer is dedicated to providing best-in-class support to maintain the lifespan and efficiency of your Hockmeyer equipment.

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    Equipment Support Program

    Learn about how Hockmeyer can provide dedicated service, maintenance, and training through our Equipment Support Program.

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Test Your Product Free. Schedule a Test Today!

At Hockmeyer, we're committed to making your product the highest quality possible, whether you need milling, mixing, dispersion or agitation. Schedule your product to be tested in one of our demo machines and see the Hockmeyer difference for yourself.

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