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Rotary Burr Graphite 55H359
The Rotary Burr Graphite 55H359 is a cemented-carbide rotary burr designed for precision shaping, engraving and surface removal on metal, aluminum and plastics. This type B cylindrical cutter (16 x 25 mm) features blades on the top and double notches for efficient chip evacuation. Lightweight at 76 g and supplied as a single piece per pack, the tool is intended for use with straight grinders and is optimized for lower-speed operation to match its 16 mm diameter.
The use of cemented carbide delivers high hardness and abrasive-wear resistance, extending tool life even under heavy use. Double notches reduce chip size and lower blade load, improving cutting performance in hard materials. High-quality workmanship ensures consistent geometry and durability, while the cylindrical type B shape provides controlled, straight cutting and easy profile work.
Fit the Rotary Burr Graphite 55H359 into the collet of a straight grinder, ensuring secure clamping and correct concentricity. Operate the tool at low rotational speeds appropriate for a 16 mm diameter cutter and apply steady, controlled feed without excessive pressure to preserve cutter life and avoid overheating. Use consistent, overlapping passes for even material removal and pause periodically to inspect the workpiece and cutter condition.
Wear appropriate personal protective equipment such as safety glasses, gloves and hearing protection. Avoid using this rotary burr in a handheld drill; it is designed exclusively for straight grinders. For best results on hard materials, maintain lower speeds and allow the cutter to remove material gradually to reduce heat and prolong tool life.
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