Tungsten carbide burrs for general use, cut 4, pointed tree shape SPG

Tungsten carbide burr pointed tree SPG dia. 12x25 mm shank dia. 6 mm Z4 universal medium fine

Item number: 21122746
EAN: 4007220048184
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Dia. external
Dia. shank
Length, cut
Length, total
Technical information

Tungsten carbide burr pointed tree SPG dia. 12x25 mm shank dia. 6 mm Z4 universal medium fine

Dia. external
12 mm
Dia. external [inch]
15 /32 Inch
Dia. shank
6 mm
Dia. shank [inch]
6 mm
Length, cut
25 mm
Length, total
65 mm
Length, total [inch]
2.9 /16 Inch
RPM from, hard non-ferrous metals
7000 RPM
RPM from, hardened, heat-treated steels over 1,200 N/mm²
7000 RPM
RPM from, high-temperature-resistant materials
7000 RPM
RPM from, rust and acid-resistant steels
7000 RPM
RPM to, hard non-ferrous metals
9000 RPM
RPM to, hardened, heat-treated steels over 1,200 N/mm²
9000 RPM
RPM to, high-temperature-resistant materials
12000 RPM
RPM to, rust and acid-resistant steels
12000 RPM
Packaging unit
1 piece

Cut 4 is especially well-suited to machining of stainless steel (INOX), steel and high-temperature-resistant materials such as nickel-based and cobalt-based alloys. It is characterized by its high stock removal rate with short chips and achieves a good surface.

Tungsten carbide burrs for general applications are suitable for fine and coarse stock removal on the key materials used in industrial manufacturing. They provide a good stock removal rate and are not specific to a particular material.

Pointed tree-shaped burr according to DIN 8032 with cut conforming to DIN 8033, flattened tip.

  • Good stock removal rate through optimum matching of tungsten carbide, geometry, cut and available coating.
  • Long tool life.
  • The highly accurate concentricity enables impact­free working without creating chatter marks. This considerably reduces wear on the tool and tool drive.
  • High surface quality.
Recommendations for use
  • 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 6 mm with drives with a power output from 300 watts.
Materials that can be worked
Case-hardened steels
Cast steel
Cobalt-based alloys
Hard aluminium alloys
Hardened, heat-treated steels over 1.200 N/mm² (< 38 HRC)
Hard non-ferrous metal
High-temperature-resistant materials
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
Cutting out holes
Milling out
Surface work
Work on weld seams
Drive types
Flexible shaft drive
Stationary machines
Straight grinder
Tool machine
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