0.0551" (1.40mm) Kyocera Chip Breaker PCB Router, .275" LOC, Fish Tail, Up-Cut, 1/8" Shank | R155

This Kyocera 1.40mm (.0551") chip breaker carbide PCB router features a .275" (approximately 7.00mm) length of cut, fish-tail tip, up-cut spiral, 1/8" shank, and 1.50" overall length. Manufactured from solid tungsten carbide, it is designed for precision routing of FR-4, G10, fiberglass, phenolic laminates, and other rigid composite materials.

The spiral chip breaker geometry uses interrupted cutting edges to divide chips into smaller fragments during machining. Combined with the up-cut spiral, this design helps promote efficient chip evacuation and reduce debris accumulation when routing abrasive PCB laminates.

Chip Breaker Geometry and Fish-Tail Tip

• Spiral chip breaker: Helps control chip formation and improve debris removal.
• Up-cut spiral: Directs chips upward and away from the cutting zone.
• Fish-tail tip: Provides end-cutting geometry for PCB profiling and through-cutting, helping reduce exit-side breakout with proper workpiece support.
• .275" LOC: Provides approximately 7mm of cutting length for PCB contours, slots, and composite routing.
• Solid carbide: Provides rigidity and wear resistance for machining abrasive laminates.

The fish-tail configuration is particularly useful for PCB outline routing and through-cutting applications where edge quality matters. Use appropriate backing material and controlled cutting conditions to minimize burrs and laminate damage.

Not sure which cutting geometry is best for your application? Compare Chip Breaker vs. Diamond Flute PCB Routers →

Typical Applications

• PCB outline routing and depaneling
• FR-4 and G10 fiberglass laminates
• Phenolic laminate cutting
• Precision slots and internal PCB contours
• Through-cutting rigid fiberglass sheets
• Selected carbon fiber composite routing applications

Carbon fiber and highly abrasive materials: Uncoated carbide can experience accelerated wear during extended cutting of abrasive composites. For demanding production applications, consider a suitable diamond-coated router.

Explore Diamond-Coated Routers →

Specifications

Feeds, Speeds and Tool Handling

See our Chip Breaker Router Feed & Speed Chart → for general machining guidance.

Adjust machining parameters for the material, spindle runout, cutting depth, and workholding. Use controlled cutting engagement and avoid excessive lateral loading or aggressive plunging.

Sold individually. Price is per router bit.