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Jongen Werkzeugtechnik Products

Drills

Jongen UNI-MILL Vollhartmetallbohrer VHB 55508 DR20
Jongen UNI-MILL Vollhartmetallbohrer VHB 55508 DR20
Drill
Jongen Werkzeugtechnik GmbH
Drills
Solid carbide drill of type VHB 55508 for drilling depths up to 8xD

These drilling tools have been specially designed for universal drilling of a wide variety of steels, stainless steels, as well as cast materials and are versatile.

The face geometry enables precise drilling. The point angle of 140 degrees, supported by a perfectly formed point with facet grinding, ensure excellent centering ability.

An optimal flow of the chips, even at drilling depths up to 8xD, is made possible on the one hand by the large chip spaces. On the other hand, the chip is formed in the groove and not on the bore wall due to the optimized groove shape with run-out radius. This avoids compression and sticking, the surface quality is improved and friction is reduced.
The polished chip flutes also improve chip flow and increase the chip removal speed by reducing frictional resistance. As a result, chip pickup is avoided.

The optimized macro geometry with long straight main cutting edge reduces cutting pressure and cutting forces, enables excellent metal removal rates and extremely long tool life.

An optimized micro geometry results in a stable cutting edge. A double guide chamfer increases the bore precision and the bore alignment. The particularly high surface quality on the guiding chamfers reduces friction with the bore wall.

This high productivity and bore quality is also achieved at high feed rates and cutting speeds.

All tools are equipped with internal coolant holes. This not only optimizes chip flow, but also enables longer tool life due to lower temperatures and less heat input into the workpiece.

Up to shank diameter <6mm, the solid carbide drills are exclusively available with shank according to DIN 6535-HA, for all larger shank diameters 3 variants are possible, shank according to DIN 6535-HA, according to DIN 6535-HB and according to DIN 6535-HE. Translated with DeepL
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Jongen UNI-MILL Drilling Tools BP 04 to BP 12
Jongen UNI-MILL Bohrwerkzeuge
Drill
Jongen Werkzeugtechnik GmbH
Drills
Jongen drills are designed for high-performance chipping of steel, high grade steel, hard to machine materials, cast iron and aluminum. The application of these tools easily allows to create a bore depth up to 3x diameter. Due to the variety of available tool diameters in the range of 14-44mm and close graduation in 0.5mm steps, almost all useful bore dimensions can be manufactured. The tools have a good initial drill penetration, due to a perfect coordination of inserts’ geometries and angles of incidence which provide soft entry in material. Thus, the high process reliability is maintained even with the difficult spot drilling conditions.
  • Jongen UNI-MILL Drilling tools
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