Milling tools with ALUMASTER cutting inserts, HSD-R design for radial applications

ALUMASTER High Speed Disc 4-1/2"/5"

Technical information
ALUMASTER High Speed Disc 4-1/2"/5"

Item number Global part number
Dia. external
4 1/2 Inch
Dia. hole
0,875 Inch
EDP number
RPM to, soft non-ferrous metals
13300 RPM
5/16 Inch
Packaging unit
1 piece

The innovative ALUMASTER High Speed Disc is a unique product with an extremely high stock removal rate. It is ideal for processing aluminum as it does not generate hazardous or explosive dust. It consists of specially developed tungsten carbide cutting inserts, which are fixed to the High Speed Disc.

Special disc for processing aluminum alloys using an angle grinder. Also designed for peripheral milling and milling out root welds.

  • Does not generate hazardous or explosive aluminum dust.
  • Does not require a dust extraction system.
  • Cost-effective and eco-friendly alternative to grinding wheels and flap discs of comparable weight.
  • Innovative and powerful milling tool designed for maximum safety, extreme durability, and ease of use.
  • Specially developed, turnable, and replaceable tungsten carbide cutting inserts.
  • Exceptionally high stock removal rate.
Recommendations for use
  • The ALUMASTER has been designed primarily for use on aluminum, wrought aluminum alloys, and cast aluminum. It can also machine non-ferrous metals that have a relatively low strength, and it can machine fiber-reinforced plastics. Check this for the specific application on a case-by-case basis.
  • Do not push the disc deep into a workpiece. The milling disc is not a cutting tool.
  • Do not exert unnecessarily high forces on the angle grinder. The ALUMASTER High Speed Disc already works with low forces.
  • When machining workpiece edges, cut along the edge, never across the edge.
  • Do not decelerate the disc while it is touching the workpiece. The cutting inserts may break.
Safety notes
  • The flange nut must be tightened with the appropriate tool, such as a face pin wrench. Clamping systems which are designed to be tightened without the use of an additional tool, i.e. which are tightened by hand, should not be used.
  • Tighten the mounting bolts of the cutting inserts using a torque spanner with a tightening torque of 4 Nm. The part number for the 4 Nm torque spanner is 20135.
  • Loose cutting inserts may break during use. Regularly check to make sure they are attached securely.
  • Do not use damaged cutting inserts, they may break.
  • High Speed Disc ALUMASTER HSD-R 4-1/2"/5" including pre-mounted tungsten carbide cutting inserts, TORX key, and plastic box.
Workpiece materials
Soft aluminium alloys
Tough aluminium alloys
Milling out
Root seam processing
Surface work
Work on fillet welds
Work on weld seams
Compatible power tools
Angle grinder
Cordless angle grinder
Stationary machines


recommends the ALUMASTER High Speed Discs for working for long periods with low levels of fatigue, whilst saving resources and achieving perfect results as quickly as possible


recommends the ALUMASTER High Speed Discs as an innovative tool solution for processing aluminum as they do not generate hazardous or explosive dust.