Tungsten carbide burrs for high performance, MICRO, pointed tree shape SPG

Tungsten carbide high-performance burr MICRO pointed tree SPG dia. 03x13 mm shank dia. 3 mm finishing

Item number: 21222673
EAN: 4007220003893
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Dia. external
Dia. shank
Length, cut
Length, total
Technical information

Tungsten carbide high-performance burr MICRO pointed tree SPG dia. 03x13 mm shank dia. 3 mm finishing

Dia. external
3 mm
Dia. external [inch]
1 /8 Inch
Dia. shank
3 mm
Dia. shank [inch]
1 /8 Inch
Length, cut
13 mm
Length, total
43 mm
Length, total [inch]
1.11 /16 Inch
RPM from, grey cast iron, white cast iron
64000 RPM
RPM from, hard non-ferrous metals
48000 RPM
RPM from, hardened, heat-treated steels over 1,200 N/mm²
48000 RPM
RPM from, high-temperature-resistant materials
48000 RPM
RPM from, rust and acid-resistant steels
48000 RPM
RPM from, steels up to 1,200 N/mm²
64000 RPM
RPM to, grey cast iron, white cast iron
80000 RPM
RPM to, hard non-ferrous metals
64000 RPM
RPM to, hardened, heat-treated steels over 1,200 N/mm²
64000 RPM
RPM to, high-temperature-resistant materials
64000 RPM
RPM to, rust and acid-resistant steels
64000 RPM
RPM to, steels up to 1,200 N/mm²
80000 RPM
Packaging unit
1 piece

Tungsten carbide burrs with the MICRO cut are specifically designed for finishing and are used in areas in which mounted grinding points are used for example. They offer a higher stock removal rate and produce a high surface quality, particularly compared with conventionally milled surfaces. They also operate with low vibration and little noise. They maintain their geometry over their entire tool life, and are well-suited to manual and machine applications. Almost all materials up to a hardness of 68 HRC can be machined.

Pointed tree-shaped burr according to DIN 8032, flattened tip.

  • High surface quality.
  • Unlike with mounted grinding points, there is no change in geometry due to wear and tear.
  • Use on almost all materials up to 68 HRC.
  • The highly accurate concentricity enables impact­free working without creating chatter marks. This considerably reduces wear on the tool and tool drive.
Recommendations for use
  • Particularly well suited to finishing, for very fine cleaning work, corrections in tool and mould construction or for sharpening cutting tools.
  • To prevent vibrations, place the tools on powerful drives with an elastically supported spindle wherever possible.
  • Observe the recommended rotational speeds.
  • If the smallest area of the burr diameter is being used, the recommended rotational speed can be increased accordingly.
  • To ensure cost­effective use of burrs, use a higher rotational speed and cutting speed. Use burrs with a shank diameter of 3 mm with drives with a power output of 75 to 300 watts.
Materials that can be worked
Annealed cast iron
Black annealed cast iron (GTS, GJMB)
Case-hardened steels
Cast iron
Cast steel
Cobalt-based alloys
Grey/nodular cast iron (GG/GJL, GGG/GJS)
Hardened, heat-treated steels over 1.200 N/mm² (< 38 HRC)
Hard non-ferrous metal
Nickel-based alloys (e.g. Inconell and Hastelloy)
Stainless steel (INOX)
Steel, cast steel
Steels over 700 N/mm² (> 220 HB)
Steels up to 1,200 N/mm² (< 38 HRC)
Steels up to 700 N/mm² (< 220 HB)
Titanium alloys
Tool steels
White annealed cast iron (GTW, GJMW)
Cutting out holes
Milling out
Surface work
Work on weld seams
Drive types
Drive spindle
Flexible shaft drive
Stationary machines
Straight grinder
Tool machine


recommends burrs with the MICRO cut for working for long periods with low levels of fatigue, whilst saving resources and achieving perfect results as quickly as possible.


recommends burrs with the MICRO cut as an innovative tool solution for comfort when working, with significantly reduced vibration and less noise.

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