PDTools Diamond Premium Bronze 650 grit 28/20
Code: PD D PRE 28/20Related products
Product detailed description
The Premium line is the highest line from the PD TOOLS Superabrasives range - layer thickness 3 mm, metallic bronze bond.
Diamonds offer excellent performance when sharpening knives from any steel. The stone consists of a 3 mm thick diamond plate mounted on a high-quality aluminum blank. A diamond bearing plate contains evenly distributed diamond grains. The production of bonded diamonds is more complex than the production of coated diamonds. Bonded diamonds provide better feedback and give the grindstone a much longer life.
PD TOOLS Superabrasives Premium Diamond uses a metal (bronze) binder that is close to metal in terms of wear resistance.

The metal bond, according to its main purpose, must hold the diamond grains on the working surface of the tool and at the same time withstand mechanical and thermal loads. Naturally, the main criterion of its quality is the intensity of its wear, it should be minimal. This is achieved by simply increasing the hardness of the joint to the maximum. Baking of such a bundle is usually done at temperatures of 900-1300 degrees. Plasticity also plays an important role in the work of the binder, as it is necessary to ensure that the abrasive grains are completely covered by the binder without gaps. In addition, the effectiveness of the binding also depends on the thermal conductivity, which determines the intensity of heat flow removal and ensures minimal heating of the working surface of the tool. The number of materials that can provide such properties is not large. The most common are copper-aluminum, copper-tin and aluminum-zinc bonds
Stone properties
- grain size (28/20 µm) 650 grit
- dimensions of the grinding part: 150(L) x 25(W) x 3(H) mm
- dimensions with blank: 160(L) x 25(W) x 7(H) mm
- Diamond layer thickness: 3 mm
- Concentration of Diamond powder: 100%
- Premium Diamonds are ideal for sharpening knives from any steel, modern "super steels" as well as for grinding ceramic knives.
Advantages of sharpening knives with Premium Diamond stones:
- Comfort when working — the stone is hard enough, but comfortable to work with. It is often compared to Japanese water stones, but diamond is much more durable than them.
- Undemanding — stones do not require additional care, which cannot be said about natural and synthetic stones for sharpening knives. These stones do not require the application of cutting fluids (coolants).
- Versatility - different grains of stones but of the same size allows you to change the stones depending on the processing phase without changing the sharpening angle of the knife
- High performance diamond for sharpening knives — an excellent result is achieved thanks to the concentration of 100% diamond grain
How to use:
- it is possible to grind dry with stones, but for grain sizes smaller than 50/40, we recommend using soapy foam or baby oil johnson baby
- we recommend micellar water for cleaning stones
- bars are restored in the process of salting with pumice, abrasive tools, silicon carbide powder on a flat surface
These stones are suitable for TsProf, Hapstone, Kazak.
Additional parameters
| Category: | SHARPENERS |
|---|---|
| Dimensions of the grinding part: | 150 x 25 x 3 mm |
| Dimensions with blank: | 160 x 25 x 7 mm |
| Grit: | 650 grit |
| Material: | Diamond |
| Bond: | Bronze |
The history of the enterprise dates back to 1966 when it was established as “Poltava Plant of Synthetic Diamonds and Diamond Tools” following the country’s directive to develop and master the technology of diamond synthesis and diamond tool production.
In 1966, diamond powder was synthesized for the first time at the plant. Within a short period, the plant became the largest producer of grinding and micro-powders of synthetic diamonds in the USSR.
Today, PJSC “Poltava Diamond Tools” is a modern enterprise specializing in the production of a wide range of diamond and CBN tools for the manufacturing and sharpening of tools made of hard alloys and high-speed steels; grinding and polishing of parts made of hard alloys, heat-resistant, alloyed, and stainless steels, glass, ceramics, silicon, refractory materials, precious stones, and other materials; cutting of products made of hard alloy, glass, marble, granite, quartz, ceramics, and construction materials; drilling of glass and highly reinforced concrete, and more.
