Diamond Tools for Grinding Machines
Diamond tools are used as expendables to grinding machines to take off the surface layer of concrete, stone,
wood and other foundations. Diamond tools consist of a metal plate with soldered on it diamond or carbide
Tools specification consists of:
1. Segment form: R (rectangular), C (circle). Clarification: the more sharp edges there are in the segments,
the rougher and the more aggressive (more productive) is surface grinding, and the more the segments hold
against the load impact. The fewer edges, as for example in case of circle segments, the fewer scratches
are left on the surface.
2. Bond type in the segment: S (soft bond for hard concrete), N (normal bond for medium concrete),
H (hard bond for soft concrete). Clarification: the softer the concrete, the harder bond is recommended,
and vice-versa. For very soft concrete and sand-cement coverings, tungsten carbide (TC) tools are
3. Segments quantity: number from "1" to "2". Clarification: the smaller the total working area of segments,
the more the pressure on the processed foundation, and consequently the more aggressive and productive
the grinding, but the less the segments lifetime (fast wear).
4. Grain size in grit: number from "16" to "150", which corresponds to the numbers: 16 grit - black, 30 grit -brown,
60 grit - grey, 100 grit - yellow, 150 grit - white. Clarification: the larger the diamond grain
(the smaller the grit number),the more aggressive and productive is surface grinding.
The correct choice depends on:
1. Surface flatness - the choice on load impact. Rectangular segments are more preferable.
2. Porosity of concrete foundation - the choice of the number of segments. Larger amount of segments
is more preferable.
3. Hardness of concrete foundation - the choice of segment bond. Soft bond is more preferable for hard
foundations, and vice-verse.
4. Required surface roughness - the choice of segment form and grit. Circle segments with small grains
150 grit are more preferable for even foundations.
Diamond tools have 2 types of fastening, adapted for all trapezoid-form plates: three screwed holes,
and additionally three plain holes for pins to fix on magnet tool discs.
As an example, diamond tools are classified according to the number of segments and its form as following:
Diamond tools are classified according to grit and bond as following:
Pads for Grinding Machines
Pads are used as expendables for grinding and polishing machines for finish processing of concrete, stone,
wooden and other surfaces after processing with diamond tools, by gradually increasing surface shine.
Pads, abrasive cloth, felted circles, etc. are attached to the transitional tool disc of a grinding machine on
an adhesive tape that provides an easy and quick tool changing.
The larger the number, indicating pad or other tool number, the less is abrasive grit, and it corresponds
to obtaining higher surface shine.