PQ-N4 series planetary ball mills may be used for mixing, homogenizing, fine grinding, mechanical alloying, cell disruption, small-volume high-tech material production, and colloidal grinding. They are designed as wet or dry milling tools for research samples with high efficiency and low noise, and vacuum jars may be used to process samples in a vacuum environment.

PQ-N4 planetary ball mills have four grinding stations arranged on the sun wheel of the planetary ball mill. When the sun wheel rotates, the grinding balls inside the jars are subjected to superimposed rotational movements known as Coriolis forces. The speed difference between the grinding balls and jars creates frictional and impact forces that release high dynamic energies, with final granularity as small as 0.1 micron.

A timer controls running time from 1 to 999 minutes and also controls jar direction of rotation and intervals. Across notes that different grinding jar and grinding media materials are available depending on the application.

Grinding methods

• Single direction without timing for long or non-stop milling.
• Single direction with timing for designated run periods before automatic shutdown.
• Bi-direction with timing for alternating clockwise and counter-clockwise runs.
• Single direction with paused interval and timing for repeated run-pause cycles.
• Bi-direction with paused interval and timing for repeated alternating run-pause cycles.

Features

• High uniformity and excellent repeatability.
• Fast rotational speed, high efficiency, and fine granularity.
• Four samples with different sizes and materials in one experiment.
• Large range of grinding media materials available.
• Gear-drive helps avoid issues caused by belt creep and belt abrasion.
• Safety switch ensures automatic shutdown if the cover is opened during operation.

Important

Across notes that particle-size results depend on material, grinding time, speed, and the grinding jar and milling ball combination. For vacuum operation, non-stainless jars require stainless steel vacuum jackets, and vacuum jars or jackets require a separately sold vacuum pump.