Busch® Carbide Micro Ramroller Polishers RR552 RR553

Eliminate micro-porosity, compress cast metal skins, and produce a high-luster finish in deep recesses without stock removal or rounded claw edges. The Busch® Carbide Micro Ramroller Series (Feine Stauchwalze) is an industrial-grade burnishing instrument engineered for master diamond setters, goldsmiths, and high-end jewelry manufacturers.

Unlike conventional rotary cutters that shear metal away, the Micro Ramroller functions as a high-speed micro-planishing hammer. Its geometry features a precision-machined solid carbide head cut with fine mirror-burnished polygonal micro-facets (24 surfaces on RR552, 20 surfaces on RR553). As it rotates against the workpiece, these micro-facets rapidly strike and compress the metal surface, collapsing micro-porosity and leveling casting skins in a single step. Constructed from high-density solid carbide (Vollhartmetall), each polisher provides rigidity without head deflection or galling across platinum, palladium, 18K/14K gold, silver, titanium, and brass. Both models feature an industry-standard 2.35 mm (3/32") shank, mounting directly into bench micromotors and flexible shaft quick-change handpieces.

Why Choose Busch® Carbide Micro Ramrollers

• Chipless Surface Consolidation: Compresses and work-hardens precious metal surfaces through rapid micro-impacts instead of cutting or abrading, preventing weight loss on high-value jewelry mounts.

• Single-Step Matte-to-Gloss Finishing: Transforms rough cast skins and matte textures into a reflective mirror finish in seconds, eliminating multi-stage rubber polishing steps.

• Tough Micro-Facet Architecture: Features precision polygonal burnishing facets (24 facets on RR552, 20 facets on RR553) ground onto wear-resistant solid tungsten carbide.

• Access to Confined Setting Geometries: Designed with narrow working ends that reach deep under-bezel cavities, prong clusters, inside channel walls, and tight pavé borders.
  

• Low-Vibration Concentric Operation: Precision-ground German shank minimizes radial runout, ensuring steady handpiece tracking against delicate gemstone girdles.

• Universal 2.35 mm (3/32") Shank: Provides direct fitment across standard flexible shaft handpieces and laboratory micromotors without collet adapters.

Technical Specifications