0.0472" (3/64") x .256" LOC 1.20mm Chip Breaker PCB Router, Fish Tail, 1/8" Shank | R154B

This 0.0472" (1.20mm / 3/64") chip breaker carbide router features a .256" length of cut (LOC), 1-1/2" overall length, 1/8" shank, and a fish tail tip. Designed for precision routing of printed circuit boards and abrasive sheet materials, it is well suited for FR-4, G10, fiberglass, phenolic laminates, carbon fiber, and other reinforced composites.

The chip breaker up-cut geometry combines an aggressive cutting action with ample flute space for efficient chip and swarf removal. This helps clear debris from the cutting path, reduce clogging, and maintain consistent cutting performance in abrasive laminate and composite materials.

The fish tail tip provides end-cutting capability while helping reduce backside breakout and splintering as the router exits through sheet material. This makes it particularly useful for PCB depaneling, cutouts, slots, internal contours, and through-routing where edge quality on the underside of the material is important.

Kyocera's chip breaker up-cut router geometry is designed to provide a clean edge finish on both internal and external cuts. The upward cutting action also helps move chips and routing debris away from the cutting area during machining.

Not sure whether a chip breaker or diamond flute router is right for your application? Compare chip breaker vs diamond flute routers →

For extended tool life in highly abrasive materials, explore our diamond-coated (PCD) routers →

👉 View Chip Breaker Router Feed & Speed Chart

Typical Applications

• PCB depaneling and board-outline routing
• FR-4 and G10 routing
• Internal and external contour cutting
• Slots and cutouts in fiberglass laminates
• Phenolic laminate machining
• Carbon fiber and reinforced composite routing
• Through-cutting abrasive sheet materials

Benefits

• Fish tail tip helps reduce backside breakout and splintering in through-cuts
• End-cutting fish tail geometry allows plunge entry and contour routing
• Chip breaker grind provides aggressive cutting with efficient swarf removal
• Up-cut geometry helps evacuate chips and debris from the cutting path
• Designed for clean edge finish on both internal and external cuts
• .256" LOC provides up to approximately 6.5mm of usable cutting length
• Solid carbide construction provides excellent wear resistance in abrasive materials
• 1/8" shank fits many precision CNC routers and PCB routing systems

Specifications