Compact bench top three roll mill units for precise results.

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The EXAKT 50 I is an indispensable tool for the laboratory or small batch producer. The small three roll mill frame takes up little room on the lab bench, yet offers the operator the versatility of dispersing a wide variety of products. This unit is specially designed for quantities up to 7 liters per hour.

Distinguishing process advantages of the 50 I:

  • Consistent and uniform energy input
  • Specific energy input and thus, controllable stress of particles
  • Achievement of homogeneous particle sizes and distributions in the matrix
  • Large range of particles and viscosities that can be processed

Unique Features

Variable speed control

  • The EXAKT 50 I is now equipped with variable speed control. This gives the technician complete control over the shear in the gap. The lower the speed and/or the wider the gaps, the lower the shear. This may be particularly beneficial for formulations that react to milling by becoming too thick or too tacky under high shear conditions.

New aluminum oxide rollers

  • For long term performance, solid aluminum oxide rollers are harder and more durable than solid porcelain rollers and, since aluminum oxide is less porous, cleaning is easier. For the serious compounder, these rollers will help to insure minimum particle fineness.

More motor torque

  • The EXAKT 50 I has a new motor that delivers more torque than the 50 I. This dramatically helps performance in those formulations with high concentrations of actives and a high “tackiness” factor.

Emergency stop and mechanical and electrical overload protection.

  • The EXAKT 50 I is the first small pharmacy mill with a top mounted emergency stop button. In addition, unlike other ointment mills from other companies, this mill and the classic mill include an internal mechanical switch to sense an overload and shut down the motor before any motor damage can be done.

Increased productivity and durability like no other easy clean ointment mill

  • With the purchase of an extra set of rollers, you can increase efficiency by having a clean set ready for your next preparation. Unlike other ointment mills that have hollow rollers, our rollers are solid and can be submerged in water. The alignment of the gaps is maintained because the rollers remain in one solid unit when removed from the machine. Removable rollers cut down on cleaning time and cross contamination between preparations.

Self-adjusting scraper with easy to adjust tension

  • The single spindle scraper apron self-adjusts to the surface of the rollers. No more positioning on pins. And for better product removal, the tension of the scraper is adjustable on the front of the machine.

Stationary splash tray

  • This feature mounts securely under the rollers and is recessed to capture spills and/or overflows.

Dial indicators for more precision in setting gaps

  • New graduated dials give you a broader range of repeatable settings.

Other unique standard features

  • Cleaning mode for safer cleaning at reduced torque and reduced speed
  • Reverse mode for the occasional mishap when something other than product enters the gap
  • Additional stop switches
  • Open circulatino system for heating and/or cooling the rollers

Removable Roller Set

The innovative removable roller set is ideal for handling the wide variety of products.

Multiple roller sets make work flexible and fast. Downtime when changing materials is avoided and the risk of cross-contamination reduced.

The generously designed roller set makes cleaning convenient and easy. All surfaces in the processing area are made of stainless steel. The process is low-loss and clean.

Safe & Durable

  • High safety standard due to integrated electrical and mechanical overload protection as well as prominently positioned emergency-off switch
  • Easy-to-assemble, self-aligning scraper base with replaceable knives
  • Speed control
  • Robust metal housing, solid, compact and durable

Roller Options

  • Aluminum oxide, no metal contamination
  • Chromium plated Steel for multi-purpose


  • Three Roll Mills - EXAKTCosmetics
  • Dental Materials
  • Electronic Materials
  • Food Technology
  • Inks

Technical Specifications – 50 I

Throughput liters/hour (min. – max.)* 0.02 – 7
Roller diameter mm 50
Roller length mm 150
Roller speed ration n1: n2: n3 3.3 : 1.8 : 1
Roller material chrome-plated hardened steel, aluminum oxide
Universal scraper system
(optional PFA coating)
Scraper knife material steel, plastics, aluminum oxide
Frequency converter Speed control** motor output kW 0.18
Dimensions mm (width x depth x height, with scraper system and hopper) 320 x 270 x 290
Weight kg. 19
Power supply *** 1 x110 V/60 Hz