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The KRUG System

Bush Hammering with the high-performance tool made by KRUG

The scabbling procedure provides the following benefits:

  • Uniform, textured surface without grooves or jet tracks
  • Use in any weather conditions: wet, cold or hot conditions
  • High efficiency: 1 tool – 1 machine – a wide range of applications



Today, the commonly used bush hammer tools for floor grinding machines consist of a roller with axle mounted on a U-block. However, these systems have significant disadvantages in terms of safety and, above all, durability.

That is why KRUG has developed a completely new tool system standing out due to the following advantages and technical product highlights:

  • Compatible with all standard floor grinders
  • Maximum functionality
  • High level of safety
  • Completely maintenance-free (no grease or oil required)

Technical product highlights

  • Dust- and splash-proofed housing
  • Well-matched sealing elements
  • Internal security elements
  • Bearing in fully enclosed housing

The treatment of asphalt, concrete or screed poses increasingly complex challenges. With the aim of providing the most comprehensive solution possible, KRUG offers four different model series.


The Concept of Scabbling

Originally, the bush hammer is a hand-held masonry tool, similar to a hammer and operated with both hands, which is used to smooth out („scabble“) the rough surfaces of chiseled hard rock, such as limestone and marble. Surfaces may be bushhammered for optical reasons and in order to enhance their anti-slip properties. Depending on the number and size of the teeth, the bush hammers produce surfaces with different degrees of roughness. Furthermore, they are increasingly used for preparing the surface for the subsequent processing steps, such as coating or polishing.


Krug Bush Hammer PDF Download:

Bush Hammer PDF

Recommendations for use: KRUG recommends using the tool system primarily on planetary grinders with three or four grinding heads. This machine technology offers ideal conditions for the tools to develop their full potential, especially with regard to the planetary gear and the speed control often in place.

Using the tools with single-disc machines is only possible to a certain extent and limited to a few machine types. More information will be available on request.

The system is basically maintenance-free. If used properly and in compliance with safety and care instructions, the unit can be used until the TC pins are fully worn.

For general protection of the ball-bearing system, the following essentials should be considered:

  • Lower the machine gently to the ground
  • Grinding head always parallel to the surface
  • Ground contact of the wheels
  • Recommended machines: planetary grinding machines
  • Speed of the planet carrier: approx. 700 – 800 rpm
  • Use a suitable vacuum cleaner
  • Wet surface with water spray mist to avoid dust

The tool should be cleaned immediately after finishing work. We recommend using a hose, preferably with warm water. High-pressure cleaners should be used with care to prevent dirt from entering the housing.