DEFINER® KM Knife Mills are high performance processors that quickly and efficiently reduce cannabis and hemp to desired output size. They employ high shear knives that accurately cut solids to desired output size with a shear action without overgrind or excessive fines. DEFINER knife mills deliver more consistent output while maintaining the product integrity.

DEFINER KM are constructed of heavy steel plate and structural steel. They are supplied with an integral base.  With precision construction and sturdy design DEFINER knife mills deliver smooth operation with low vibration. Stainless Steel construction is available as an option. DEFINER KM Knife Mills feature a clam-shell housing for easy access to the interior. The knives are precision constructed of high strength tool steel and are readily replaceable in sections.  These units are available with a choice of starters or automatic control system.



KM500: The KM500 features up to a 5HP motor and drive. This unit can handle hemp, cannabis, small pieces of rubber, plastic and other dry materials.

KM1000: The KM1000 features up to a 40 HP motor and drive and can handle hemp, small bales, rubber, vinyl and plastic, new and recycled parts and more.

KM3000: The KM3000 features up to a 75 HP motor and drive. This unit quickly reduces large quantities of hemp to desired output size.

Vulcanator KM05


DEFINER knife mills are provided in a number of configurations. A choice of front loading or top loading hoppers is provided. An available (PDS) Pneumatic Discharge System can be provided integrated with the unit. The PDS includes a discharge transition, blower, cyclone and interconnecting piping.


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