P5 Planetary Ball Mill


Each working station of the Fritsch P5 planetary ball mill has been designed to be used for one 500ml, 250ml or an 80ml grinding bowl. When using the 80ml grinding bowls, two 80ml grinding bowls are clamped in the instrument, by placing one on top of the other. If only one 80ml grinding bowl is to be used, then a single 80ml grinding bowl adapter must be used in each work station.

In the P5 planetary ball mill, the grinding bowls rotate around their own axis, whilst orbiting around a central axis. Forces are exerted on the grinding balls and the sample, which are constantly changing direction and energy amount. Optimum grinding ball movements are obtained due to the design geometry and transmission ratios.

The grinding balls are carried up the inner wall of the grinding bowl and propelled off the wall; after crossing the grinding bowl, the balls and the material collide on the opposite side of the grinding bowl wall. The energy developed through the impact is several times higher than conventional ball mills. As a result excellent grinding results are obtained with much shorter grinding times.

The Fritsch P5 model IV ball mill has been designed for location on the laboratory bench, with dimensions of (w x d x h) 58 x 67 x 57cm and a net weight of 120Kg.

Advantages of the Fritsch P5 Planetary Ball Mill

  • Two or four working stations.
  • Maximum working capacity of 2 x 225ml or 4 x 225ml.
  • Reproducible grinding results due to controlled drive and programmable electronics.
  • Precise speed display and microprocessor controlled electronics system.
  • Loss free grinding even in suspensions.
  • Quick secure fastening of the grinding bowls.
  • Safety tested – CE marked.
  • 2 year guarantee.


Design Characteristics of the Fritsch P5 Planetary Ball Mill

  • Exact transmission ratios due to the toothed belt.
  • Grinding bowl sizes of 80ml, 250ml 500ml.
  • Speeds of upto 400rpm.
  • Programmable timer and reversing unit.
  • Programmable interval and break times.
  • RS232 interface.
  • IP65 rated keyboard.


Built in Safety Features of the Fritsch P5 Ball Mill


  • An unbalance sensor that stops the instrument, if a milling bowl becomes unsecured from the position within the instrument.
  • The instrument has a casing made of polymer, which is reinforced with glass fibre. This casing might fracture, if a milling bowl becomes unsecured from its position.