BeltMaster 300

Grinding, deburring and edge rounding machine
in a working width of 300 mm


The BeltMaster KD300 is equipped with an abrasive belt unit and a disc unit. The abrasive belt unit can be used for deburring or finish grinding. The eccentric adjustment of the sanding drum allows the use of thicker nylon abrasive belts for fine finishing. The large disc with 400mm diameter and plenty of abrasive stock achieves a strong edge rounding. The KD 300 can be used with both units together or with only one unit at a time.

  • Uniform disc wear regardless of workpiece size and placement on the conveyor belt.
  • Disc diameter larger than conveyor belt width, processing from two directions
  • Very easy handling and quick changeover when changing material steel/stainless steel
  • Eccentric adjustment for use of non-woven belts
  • Pneumatic belt tensioning and belt oscillation

The BeltMaster KD 300 is equipped as standard with motorised thickness adjustment, digital display and infinitely variable adjustment of abrasive belt speed, disc rotation and feed speed. Optionally, the machine can be equipped with vacuum transport belt or magnets.


  • Deburring and rounding of stamped parts as well as water-jet, laser or plasma-cut parts
  • Removal of raised burrs and splashes
  • Deburring and edge rounding in one pass
  • Grinding with straight finish

Technical Data

  • Max. working width 300mm
  • Workpiece thickness 1-100mm

Pictures and Videos

Video BeltMaster KD 300

Pictures may include extra options.


Rotating cleaning brush
The rotating brush cleans the conveyor belt from below on the outfeed side.

Vacuum feed belt
For better transport of small work pieces without holes.

Quick-fix tool connector
The quick-fix tool connector allows for speedier changing of discs when switching between steel and stainless steel.

Magnetic track
A permanant magnetic track is located below the feed belt for holding down smaller steel parts. This is recommended especially when using OxideDiscs.

Dust extraction unit
Loewer offers a range of dust extraction units for removing harmful abrasive dust. Depending on the application at hand, these are available for wet or dry processing.


LOEWER K – Abrasive belt unit with contact drum

The abrasive belt unit with a contact drum can be used for graining a decorative straight-line finish or for deburring.

  • Decorative straight-line finish

LOEWER D – Rotating Disc without Oscillation

The workpiece is placed on a feed belt and passes under the rotating disc which works from the top. The disc diameter is larger than the width of the feed belt, thus allowing the workpiece to be processed from two directions, left to right and right to left.

  • Processing from two directions
  • Even wear of abrasive tools

Possible Tools

SoftDisc with soft pad for deburring mild steel or aluminium

Legally-protected CompactDisc for removing higher burrs and spatter on stainless steel

MediumDisc for edge rounding, available in different grit sizes and hardnesses.

Flexible SmartFlexDisc for edge rounding foil-coated, zinc-coated or 3D punched sheet metal parts



Range of Machines