Mounted Abrasive Stone- Medium/Hard - Fig. 652 - Ø3.3mm

The Busch High Grade Corundum Abrasive Wheel Shape 652 Ø3.3mm is a premium-quality mounted abrasive designed for precision grinding, smoothing, deburring, and pre-polishing of medium-hard metal alloys used in jewelry manufacturing, goldsmithing, silversmithing, and precision metalworking.

Manufactured from high-purity pink aluminium oxide (Al₂O₃), this abrasive wheel offers excellent cutting performance, long service life, and consistent material removal.

The medium grit size combined with a medium bonding hardness provides the ideal balance between cutting efficiency and surface finish, making it suitable for shaping, refining, and preparing metal surfaces prior to polishing.

The Shape 652 tapered cylindrical profile is designed for precise grinding, smoothing, and finishing of internal surfaces, grooves, channels, and detailed jewelry components. Its elongated shape provides excellent control and accessibility in confined areas, making it ideal for refining castings, removing tool marks, and preparing medium-hard metal alloys for polishing. 

Specification

• Brand: Busch
  
• Material: Pink Corundum (Al₂O₃)
  
• Shape: 652
  
• Diameter: 3.3 mm
  
• Grit: Medium
  
• Bond Hardness: Medium
  
• Recommended Materials: Medium-hard metal alloys
  
• Shank Diameter: 2.35mm
• Max: 85000 tours/min

These mounted stones are widely used in jewelry making, goldsmithing, silversmithing, watchmaking, and precision metalworking for grinding, smoothing, deburring, refining castings, removing tool marks, and preparing surfaces for polishing. They are particularly effective on medium-hard metal alloys, offering controlled cutting action and a uniform surface finish.

Busch corundum abrasives are trusted worldwide by jewelers and precision craftsmen for their durability, accuracy, and consistent finishing performance.