Knife Mill (Net weight - 30 kg)

With its special cutting knife system and variable-volume grinding chamber, the laboratory Knife Mill (Net weight - 30 kg) processes a great variety of sample materials quickly and reproducibly to completely homogeneous analytical samples – within seconds!

• For large Food Samples
• Efficient size reduction of up to 4500 ml feed quantity due to powerful 1.1 kW motor (peak power input >3 kW)
  Pre- and fine grinding in one mill: cutting action in regular mode, grinding by impact in reverse mode, pre-grinding in interval mode
• All parts in contact with the sample material are autoclavable
• Perfect adaptation to application requirements by variable speed from 500 to 4000 min-1 with an increment of 100 min-1
• Optional gravity lid for automatic reduction of chamber volume
• 10 SOPs can be stored
• Grinding jar in plastic and stainless steel available

GRAVITY LID ENABLES VARIABLE VOLUME OF THE GRINDING CHAMBER
has developed a gravity lid for the Knife Mill (Net weight - 30 kg) which reduces the volume of the grinding container, preventing the sample from escaping the homogenization process by clinging to the container walls. The lid drops under its own weight during grinding and always rests directly on the sample. The result is thorough homogenization of the complete sample material. The gravity lid is also available with overflow channels. It ensures that the cell liquid released by the sample during grinding is returned through these channels to the center of the container, allowing for perfect homogenization.

ACCESSORIES & OPTIONS

A range of different containers, lids and knives makes the KNIFE MILL (NET WEIGHT - 30 KG) a truly universal device. The selection of the grinding container depends on the products to be processed. Standard plastic containers are suitable for the majority of applications. Other accessories are available for special applications.

Gravity lid made of autoclavable plastic

• Automatically adjusts the grinding chamber volume to the changing sample volume.

Gravity lid with overflow channels

• Ideally suited to homogenize samples with a high water content.

Special lid for dry ice applications

• Made of autoclaveable plastic, it allows possible overpressure to escape through a small opening.

Stainless steel container

• Minimum wear when hard sample materials are processed.

Knives

• 4 different knives available: stainless steel, stainless steel with serrated blades, full metal blades & cylinder, with titanium-niobium coating for heavy-metal-free size reduction. All are autoclavable.

Scraper

• Facilitates the recovery of sticky samples from the container.

FUNCTIONAL PRINCIPLE

The Knife Mill (Net weight - 30 kg) features four sharp, robust blades, which rotate in the center of the grinding container. Depending on the rotational direction, size reduction is effected with the blunt side (preliminary size reduction) or the sharp side (fine grinding). The knifes are protected with a counterblade from damages by hard sample materials.
The knife is indirectly driven by a powerful motor of 1.1 kW which can reach temporary peaks of 3 kW. A pre-selectable speed which is maintained electronically ensures reproducible results.

• For large Food Samples
• Efficient size reduction of up to 4500 ml feed quantity due to powerful 1.1 kW motor (peak power input >3 kW)
  Pre- and fine grinding in one mill: cutting action in regular mode, grinding by impact in reverse mode, pre-grinding in interval mode

Applications :

• size reduction, homogenization and mixing

Field of application :

• agriculture, biology, food, medicine / pharmaceuticals

Feed material :

• soft, medium-hard, elastic, containing water / fat / oil, dry, fibrous

Size reduction principle :

• cutting

Material feed size :

• ~ 130 mm

Final fineness :

• < 300 °m

Batch size / feed quantity :

• with standard lid 4500 ml
• with gravity lid 4000 ml

Grinding chamber volume :

• 5000 ml, reduction with gravity lid

Speed setting :

• digital, 500 - 4000 min-1

Dry grinding :

• yes

Wet grinding :

• yes

Material of grinding tools :

• grinding container: autoclavable plastic PC, stainless steel 1.4435
• blade: stainless steel 1.4034
• holder for blade: PVDF
• sealings: EPDM, FKM

Setting of grinding time :

• digital, 5 s - 3 min

Interval operation :

• yes

Interval time :

• adjustable

Storable :

• SOPs 10

Drive :

• 3-phase asynchronous motor with frequency converter

Drive power :

• continuously 1.1 kW, short term 3 kW

Electrical supply data :

• different voltages

Power connection :

• 1-phase

Protection code :

• IP 20

W x H x D closed :

• 440 mm x 340 mm x 440 mm

Net weight :

• ~ 30 kg

Standards :

• CE