Planetary Mill with a Variable Transmission Ratio

In contrast to conventional Planetary Mills, the rotational speed of the grinding bowls and supporting disk can be configured separately in the Vario-Planetary Mill PULVERISETTE 4 classic line with 2 working stations from Fritsch GmbH. This results in a single mill for mechanical activating and alloying providing optimum grinding conditions suited to the respective material to be ground and the size of the grinding bowls and balls.

The PULVERISETTE 4 classic line also operates according to the Planetary Principle, but the transmission ratio between grinding bowls and supporting disk is variable adjustable. This means you can directly influence the movement and paths of the grinding balls: depending on the setting, you can obtain high impact energy or high friction, according to your needs, or have your PULVERISETTE 4 classic line operate as a Centrifugal Mill. You are free to choose all intermediate levels and combinations between friction-based and impact-based comminution.

Features include: flexible configurable grinding conditions: impact and/or friction; rotational speed up to 400 rpm; ideal for mechanical alloying and activation; simultaneous processing of up to 4 samples; especially suited for material research and development applications; ultimate fineness down to 0.1 μm; useful capacity of 2 x 0.5 ml to 2 x 225 ml; bowl sizes 12 ml, 45 ml, 80 ml, 250 ml and 500 ml capacity.

The Vario-Planetary Mill PULVERISETTE 4 classic line can be combined with the GTM-System for measuring of the gas pressure and temperature during grinding. This turns your mill into an analytical measuring system.