Druck steuert die Schneidenkraft beim Entgraten High Speed ​​Deburring
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HSD - High Speed Deburring


Process of deburring by HSD - tool entry

The HSD deburring tool is moved (in rapid feed) to the starting position. The cutting edges are folded in. There is no need of pressure yet. The starting position is reached when the cutting edges are in front of the burr.

Process of deburring by HSD - tool is deburring forward

Now the deburring process begins. The coolant or air pressure is now switched on at latest. This controls the force on the cutting edges. The tool is now feeding forward in a rotating direction.

Process of deburring by HSD - tool is deburring forward

During the forward feed and rotation, the hole or intersection is deburred. The blades fold out within the intersection and are folded in again at the shape of the main hole.

Process of deburring by HSD - tool is deburring backward

The hole has been completely passed in forward direction. Now the direction of rotation is reversed and the feed is going backwards. In the retreat, the opposite side of the intersection is now deburred. When the cutting edges have completely passed the hole, the deburring process is complete. The tool can be moved out (in rapid feed).

Function of the HSD tools - cutting edges moveable

Pressure controlled cutting

A key feature of HSD technology are the pressure-controlled cutting edges. The pressure is applied to the cutting edges through the tool shank. Coolants, water, air or oil are suitable media. When there is no pressure, there is no force on the cutting edges, so the cutting edges snap in without any applied force.

Cutting force of HSD tools are controlled by pressure


When pressure is applied, the cutting edges are pressed out of the shaft. The pressure height determines the force at which the cutting edges are pressed in again, which force is applied when deburring. The pressure is an essential parameter for adapting the process to the burr, the material and the edge pressure generated by the deburring. The process is furthermore controlled by rotation and feed.

Tools and Variants

HSD deburring tools of different diameters

Deburring cross holes and intersections

HSD deburring tools are used in many applications for deburring intersecting holes. They are available in different versions for this application. The optional functions and design features used to implement the tools depend on the requirements of the customer. We advise the necessary features and explain the possibilities.

HSD deburring tools can be made very long and slim. They are therefore very well suited for deburring cross holes in deep holes. It is an advantage that cross bores with different diameters are deburred through the main bore with one tool.

Deburring tool with multiple cuttings

Multi-edge deburring tools

HSD deburring tools can be made very compact due to their design and the complete absence of spring-like elements. This means that not only very long and slim tools are possible, but also the arrangement of several cutting edges in one plane. With the multi-bladed tools, higher feeds are driven and machining time is saved.

The cutting edges of HSD tools can also be arranged on several levels. Several intersecting holes or other intersections are deburred in one step with one tool.

multi stage tools are used for stepped bores

Deburring tools for stepped bores

Multi-bladed HSD deburring tools are used in stepped bores. For different diameters of the main bore stepped designed tools are in application. The different cross bores in a component with a stepped main bore can be deburred simultaneously and with just one tool. The geometry of the cross holes can be different.

special deburring tool for pipes end

Special designs and combinations

Another version is used when no coolant or pressure medium is available. Then the cutting force can be applied by an elastomer instead of the pressure. The pressure supply is not necessary.

HSD deburring tools also solve other special deburring tasks. For example, HSD tools for deburring slotted shaft ends have been in use for a long time. With these special tools, cutting edges are arranged both inside and outside. In this way, the shaft end is completely and simultaneously deburred on the inside and outside.

Use in the deburring station or machine

Frequently asked Questions

Owner Dr. Reinhard Nothnagel HSD-Entgraten

"The HSD deburring tools are tailor-made precisely to the customer's requirements"

We support you in solving the deburring task based on our decades of experience. The further development of the deburring tools is in our hands. We cooperate directly with the inventor, the Dr.Beier-Entgrattechnik.

Dr.-Ing. Reinhard Nothnagel
Company owner & managing director

Inquiry - Analysis - Advice - Order

The HSD deburring tools are special tools that are individually adapted and manufactured to the component to be deburred and the process.

The following information will be very helpful in advance:

  • Component drawing, sketch or photo of the location of the burrs to be removed
  • Short hint on the origin of the burr, machining sequence
  • Are there requirements for the chamfer or roughness after deburring?
  • Is a cooling medium or compressed air available? What pressure is on or can be set?