Tag Archive: pin mill

  1. Get Swept Away by our Classifying Processes

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    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.

  2. Pin Mill vs. Hammer Mill: A Contrast and Comparison


    Pin Mill

    The two most common grinding machines used by industry are the pin mill and hammer mill. Both mills have fundamentally unique features that make them suited for a wide range of materials production.

    Pin Mill
    The Pin Mill, unlike the Hammer Mill, consists of a series of pin breakers hinged to discs in the grinding head where it delivers high-energy impact. Pin Mills use shearing and impact methods; however, with a faster tip speed of intermeshing pins when compared to a Hammer Mill. Centrifugal force brings the particle sizes to the grinding chamber’s periphery for collection or further processing. The milling process will produce particle sizes down to ultra-fine micronized sizes +/- 10 µm. Particle sizing generated by the pin mill is the product of rotor tip speed, airflow rate, the feed rate of the material, as well as the morphology of the feed material. The milling process balances additions and reductions of airflow, feed rate, and rotor speed.

    Hammer Mill
    The Hammer Mill, one of the oldest and widely used grinding mills, typically consists of four or more hammers attached on a central shaft enclosed by a metal casing. The mill performs particle size reduction via high-speed impact of hardened steel rotating hammers. Particle size reduction occurs in three actions: repeated hammer impact, particle collisions with the chamber wall, and particle-to-particle impact. Screens (set at a specified cut point) retain coarse particles for further grinding while allowing product sizes below the cut point to pass. Achieving the target particle sizing is a function of rotor speed, feed rate, hit resistance, clearance between grinding plates and hammers, and screen size.

    At Classifier Milling Systems, we manufacture both pin mills and hammer mills as well as the leading air classifier mills and a broad range of milling technologies and products designed to give you the fine grind that suits your unique needs. We are a dedicated team with expert knowledge of particle size reduction. We guarantee exceptional service every time. We also guarantee performance!

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

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    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!

  4. Impact & Attrition Grinding: CMS Pin Mill series

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    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.

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

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