ORBPBM Planetary Ball Mill


The ORBPBM laboratory planetary ball mill is universally applicable for quick dry or wet grinding of inorganic and organic samples for analysis, quality control, materials testing and mechanical alloying.
In synthesis, the ORBPBM can be used for mixing and homogenization of dry samples, of emulsions and of pastes.

Orbit’s Planetary Ball Mills consist of several cylindrical grinding jars (positioned on the sun wheel as shown on the figure) which are filled with loose grinding balls. Two superimposed rotational movements move the grinding jars.

Like in a planetary system the grinding jar rotates on an orbit around the centre. This rotational movement is the self-rotation of the grinding container superimposed. The resulting centrifugal and acting acceleration forces lead to strong grinding effects.

Depending on the speed ratio different movement patters of the grinding balls / media can be achieved. It can be achieved that the grinding media are crossing the grinding jar and loosen from the wall.
At hitting the wall of the grinding jar the sample will be stressed. At a different motion pattern the grinding balls roll over the sample and stress the ground material.

Dimensions W x D x H
759x480x548 mm
Working principle
Impact, Friction
Feed size maximum
< 10 mm
Number of grinding jars
Maximum volume of each grinding jar
Minimum volume of each grinding jar
50 ml
Maximum end fineness
< 1μm; < 0,1μm for colloidal grinding
Adjustment of grinding duration
Digital adjustable
Setting of grinding time
Digital, 00:00 to 99:59
Interval operation
Yes, with direction reversal
Pause time
00:00 to 99:59
Speed ratio
1:-2; 1:-2.5; 1:-3
Sun wheel speed
50-650 min-1
Effective sun wheel diameter
360 mm

Request a Quote

Leave us your details and we will contact you soon.