Category Archive: Products

Try our Portable Tabletop Lab System!

If you’re looking for the functionality of our Air Swept Classifier Mill System, but need a smaller machine, the Tabletop Lab System is the perfect choice for you! It is the most convenient grinding system we offer and has just as many capabilities and impressive features as our larger machines.

The Tabletop Lab System is a portable unit initially designed for batch testing and product development. It is the moveable, tabletop version of the commercial scale Air Swept Classifier System. The Tabletop unit is rated to grind feed materials at a rate of +/-150 pounds/hour continuously (depending upon particle size distribution targets and feedstock Mohs hardness), and is ideal for temperature-sensitive source materials. The Tabletop Lab System incorporates a stainless steel rotary valve, screw feeder with a built-in cartridge filter, stainless steel cyclone, blower set with an inlet and outlet silencer, side-mounted control panel. The Tabletop Mill also features a clamshell design for quick and easy cleaning.

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Your Project Starts in the Laboratory!

In the processing industries, fierce competition and keeping up with ever-changing regulatory requirements are some of the challenges one faces when bringing new products to the market. Which leaves no room for error on the processing line — so get it right in the laboratory before going to commercial scale. The CMS ultra-modern laboratory test facility can play an essential role in defining and helping you to meet commercial-scale challenges.

From grains and coffee to powder paints, pigments, and industrial minerals, the list of materials that CMS has evaluated, or formulated and engineered custom milling systems, is very long. What we’ve learned from thousands of materials trials will save you time in arriving at the optimal milling techniques, methods, and systems.

We can help. We encourage you to send us a sample!

Get Swept Away by our Classifying Processes

Precision crafting, stringent quality standards, machining capacity, and fast turnarounds — these are the defining characteristics of our replacement parts program. From liners or rotor discs, hammer sets, classifier wheels, and spindle assemblies — we are experts at building close tolerance components from abrasive resistant and high temperature hardened refractory metals and ceramics. We also offer specially designed liner coatings for high temperature, corrosive, or abrasive applications.

If you need a spare part for CMS equipment, then be assured that we have it in stock for immediate delivery or that we can manufacture the component or part in record time. Need a replacement part for equipment from another manufacturer? We can accept your component or part drawing, or travel to your facility and validate the fabrication specifications, then manufacture and maintain an inventory on hand for immediate fulfillment.

Anything more? Yes, our warehousing and assembly locations have easy access to major highways, ports, and airports, further ensuring rapid and reliable delivery. So the next time you are sourcing replacement parts, think CMS—we will be excited to hear from you.

In the meantime, please see more details of our replacement parts program.

The Hammer Mill and Pharmaceutical Production

No pharmaceutical processing facility is complete without the Hammer Mill. Versatile and requiring relatively small footprints, hammer mills are suitable for product development and production of coarse through ultra-fine powder production. Hammer Mills can also be equipped with integrated lifting columns to fit into almost any processing line.


Hammer Mills are excellent for reprocessing and recovering off-products, positioning materials for milling again, thereby reducing waste, increasing productivity, and lowering unit costs. More advanced mills utilize a dual-sided blade assembly, where one side serves as the hammer to impact dry materials while the other to knife through the wet ingredients. Some Hammer Mill rotor assemblies are reversible without disrupting the rotation of the mill. Hammer Mills can be employed to reclaim rejected tablets to powder form. Incorrect hardness, overweight/underweight, and poor appearance are among reasons that tablets are unacceptable products. But, despite rejection as a consumer product, the essential powders are typically recoverable.

Shock-resistant Turbo Mills find a place in the pharmaceutical industry when working with higher-toxicity APIs (which can heighten risks for dust explosion) and for +/- 10 bar shock resistance.

Want to learn more from Classifier Milling Systems? Give us a call or contact us!

Milling: Impact with Classification, High-Speed Impact & Attrition Mills


There is no single grinding system that can do it all!

Choosing the appropriate milling system is based on your particle size distribution requirements, feed material sensitivities, moisture content, hardness, flow (free-flowing, semi-free flowing or prone to bridging/plugging), melting point, brittleness, and abrasiveness, among other factors. Here are brief descriptions for several grinding mill system methods:

Air Classifier Mills, such as the CMS Air Swept Classifier Mill, combine impact grinding and particle size classification in a single continuous process (occurring inside the mill) rather than in a separate downstream mechanical process. Independent drives for the classifier wheel and impact rotor allows the operator to adjust each component’s rotational speed independently. Drag and tip speed control the product’s sizing.

High-Speed Impact Mills, such as hammer mills, cage mills and pin mills rely on the rotating speed of the hammers/pins and classifiers or screens to control the particle size of the materials. A variation (in some pin mills) is the counter-rotating two-rotor assembly, spinning in opposite directions. This configuration works on the principle of higher tip speed (impact actions) for fine grinds.

Attrition or Disc Mills, are milling machines arranged with one rotating and one stationary disc. The grinding surface has machined teeth. In changing the final particle sizing, the distance between the discs is adjusted, as well as the shape, depth, and number of the grinding teeth. The grinding process is more of a cutting action (attrition) of the disc mills.

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Pin Mill: Why it can be the grinding mill of choice

Pin Mill

The pin mill consists of two counter-facing discs with pins mounted to a stationary or counter-rotating disc plate and a second rotational rotor plate. Material fed to the grinding chamber is pulled by the centrifugal force exerted by the spinning disc(s), flowing the production materials through the pins to collide with the liner wall. The material at particle sizes below the cut point will exit the mill to a cone hopper, while material above the cut point recirculates for continued grinding. Also called a Centrifugal Impact Mill, the pin mill offers several benefits over other grinding mill types:

  1. Micronized particle sizing – Pin mills can meet size reduction targets as low as 2 µm.
  2. Uniform product – Pin mills, more than most other mill types, are known for producing a highly homogenous product.
  3. Dust-free – Pin mills do not expel dust during operation, therefore eliminating nuisance-dust from grinding, and nearly eliminating product waste.
  4. Energy consumption – Pin mills are energy-efficient.
  5. Small footprint – Pin mills are relatively small grinding mills easily integrated into milling systems flows.
  6. Flexible use – Pin mills can be used to mill dry or moist material. Moreover, the particle size can be altered ‘on the fly’; without having to shut the mill down.

When looking for grinding mills, the pin mill is one to keep in mind. Want to learn more? Give us a call or contact us!

Impact & Attrition Grinding: CMS Pin Mill series

Product Spotlight: Grinding Mill Equipment

The CMS Pin Mill is a reliable choice among many of our industrial clients. To help you determine whether a CMS pin mill is the best fit for your operational requirements, here is a brief profile of its capabilities, features, and maintenance requirements.

The CMS Pin Mill series utilizes a configuration that combines pins mounted to a stationary disc plate and a second rotational rotor plate. Material passing into the grinding zone becomes subject to centrifugal force, which accelerates the processed materials through the arrangement of the pins, then impacting the liner wall. Processed material below the target cut point will then exit the mill to a cone hopper, while material above the cut point will recirculate for continued grinding. An inverter drive allows the operator to shift for desired particle sizes without the need for shutdown. The CMS Pin Mill series is available in model sizes up to 150 HP.

At CMS, our engineers and processing staff understand the importance of accessibility when it comes to cleaning and maintenance. The cover hatch to the pin mill is hinged, which allows for the components that directly interact with your products to be easily accessed, removed, and cleaned, and quickly ready for the next cycle. Additionally, the grinding chamber is extractable for maintenance or repair.

In the event your pin mill requires tuning or repair, CMS manufactures and regularly updates an inventory of replacement parts. We will guide you in the reinstallation of these components.

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CMS Hammer Mill: Grinder Spotlight

As the premier choice of various chemical and manufacturing plants around the globe, the CMS Hammer Mill series is undeniably dependable. Current installations of CMS Hammer Mills include a wide range of applications, including facilities for cryogenic grinding of cosmetics. The CMS Hammer Mill series is available in sizes up to 150HP, constructed with unbreakable fabricate or stainless steel. Current installations of CMS Hammer Mills include cryogenic grinding of cosmetics, rubber, plastics, nutraceuticals, and a range of agricultural food-stocks.

• Rugged, requiring minimal maintenance when compared to most grinding systems
• Single access point for easy maintenance, cleaning, and service
• Accommodates a wide range of particle sizes (typically for milling to +/-45 µm d90)
• A leading mill for size reduction of brittle (friable) material
• Durable housing and a unique lightweight rotor design

Want to learn more? Give us a call or contact us!