About this machine

This Hein Lehmann FB FM-20 is a laboratory sand mill — sometimes referred to as a bead mill — used for the fine grinding, dispersing, and homogenising of liquid and solid mixtures in research, development, and small-scale production applications. Hein Lehmann is a German engineering company with a long history in separation and processing technology, supplying equipment to industries including chemicals, coatings, pigments, and minerals.

The machine is a horizontal sand mill with a grinding chamber volume of 18.3 litres, confirmed by both the capacity and volume figures in the specification. The barrel interior is constructed from grade SS430 stainless steel, a ferritic, magnetically responsive grade of stainless steel that offers good corrosion resistance and is suited to certain grinding applications. The housing measures 265 mm in diameter by 450 mm in length. Product enters through a 25 mm diameter inlet and exits through a DN40 outlet. The unit carries serial number 204 503 and was manufactured in 1992.

Drive is provided by an 18.5 kW motor rated at 415 volts, delivering the power needed for fine grinding operations. The machine is fitted with a mechanical seal supplied by Feodor Burgmann, a well-regarded manufacturer of sealing solutions, which helps to contain the process media and protect the drive shaft. A jacket is included for temperature control during grinding, allowing the operator to manage heat generated in the process. Switchgear is also included with the machine, providing the electrical control equipment as part of the package.

The overall height of the unit is 1.7 metres, and it occupies a floor footprint of 2.1 by 0.7 metres. The machine bears CE marking, indicating conformity with applicable European safety and technical standards. It is located in Barneveld, Netherlands, and is offered in used condition.

This description was generated automatically from the listing details and may not reflect every specification. Please confirm with the seller before purchase.