Mikro® UMP Pin Mill


The Mikro® UMP Pin Millis a compact, high speed impact mill capable of fine size reduction specifically designed for pharmaceutical and food applications. The Mikro® UMP Pin Mill was developed to meet the Pharmaceutical and Food markets’ increasing demand for high performance milling technology. The design of this mill meets the requirements of the Pharmaceutical Industry for both product performance and cleanability. The mill design incorporates reduced internal surface areas, connection points, and acute internal surfaces for the ease of cleaning. The pin rotors are designed as singular unitary discs with pressed pins to minimize surface areas where contamination can occur and to provide ease of cleaning.

Design & Features:

  • Capable of ultra-fine grinding to D97 = 35 µm
  • Lab & production models available from 1 HP to 40 HP
  • Capacity ranges from 5 grams/batch up to 3,000 lbs/hour
  • Energy efficient & economical to operate
  • Designed for milling soft to medium-hard materials with a Moh’s hardness of 4 or less
  • Fabricated stainless steel construction
  • Finishes available to 0.6 micron Ra
  • Variable speed rotor drive
  • Cantilevered design for ease of cleaning
  • Maintenance free, sealed for life bearings
  • Double lip seals & gas purging between drive & process area
  • Compact design & dust free operation
  • Gravity or pneumatic conveying discharge available
  • Cryogenic operation available
  • Variety of feeding options and system configurations
  • Containment design options available for isolator installations

The pin disc assembly includes a stationary pin disc rotor mounted to the inside door cover. As an option, the door and stationary pin disc can be provided as one single piece if required for a specific application. A rotating pin disc rotor is mounted to the main drive shaft of the mill. During rotation the interlacing pins create a labyrinth for the product to pass through — providing ultrafine size reduction. At high speed the Mikro® UMP Pin Mill can process materials to a top size of 35 microns or even finer in certain pplications.

The fabricated grinding chamber is constructed in 316 stainless steel with a high quality 0.6 micron Ra finish. Higher quality finishes are available for specialty applications. The access door is hinged to the grinding chamber and is secured with a tri-clamp connection for easy and quick access and inspection.

The bearing housing is a cantilevered design and includes maintenance free, sealed for life bearings. There are double lip seals and a gas purge between the drive and process areas to eliminate material contamination and premature war of drive components.

  • Bakery Products
  • Chocolate Crumb
  • Corn Starch
  • Dried Fruits
  • Fiber
  • Flavorings
  • Gelatin
  • Herbs
  • Milk Powders
  • Pigments
  • Potato Starch
  • Seaweed
  • Spices
  • Sugar
  • Sugar substitutes
  • Amoxicillin
  • Cellulose
  • Homeopathic products
  • Nutraceutical
  • Proteins
  • Vitamins
  • Mica
  • Hormones
  • Corn Starch
  • Gelatin
  • Potato Starch
  • Active Pharmaceutical Ingredients
  • Carmine/Cochineal
  • Diatomaceous Earth
  • Hydroxyethyl Cellulose
  • Hydroxypropyl Cellulose
  • Iron Oxide
  • Magnesium Aluminum Silicate
  • Polysorbate
  • Sodium Hydroxide
  • Titanium Dioxide
  • Zinc Stearate
  • Lactose
  • Excipients
  • Cell Culture Media


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