0.0512" (1.30mm) × .300" LOC Diamond Flute PCB Router, Fish Tail, 1/8" Shank | R126

Kyocera 1.30mm Diamond-Flute PCB Router | .300" LOC | Fish Tail | Up-Cut

The R126 solid carbide diamond-flute router features a 0.0512" (1.30mm nominal) cutting diameter, 0.300" (7.62mm) length of cut, and standard 1/8" (3.175mm) shank. Manufactured by Kyocera, this precision CNC router is designed for PCB routing, FR4/G10 fiberglass laminates, phenolics, and other abrasive composite materials.

Its diamond-pattern cutting geometry uses numerous small, intersecting cutting edges for controlled material removal. The fishtail tip provides end-cutting capability for suitable sheet materials, while the 0.300" cutting length offers additional reach for routing and profiling thicker laminates and composite sheets.

Key Features

• 0.0512" (1.30mm) cutting diameter: Precision cutting width for PCB outlines, slots, and contours
• 0.300" (7.62mm) LOC: Extended cutting reach for suitable fiberglass laminates and composite materials
• Diamond-flute geometry: Multiple intersecting cutting edges help limit fiber pull-out, fraying, and chipping under appropriate cutting conditions
• Fish tail tip: End-cutting geometry supports entry and through-routing in suitable sheet materials
• Up-cut configuration: Helps direct cutting debris upward during routing
• Solid tungsten carbide: Provides rigidity and resistance to abrasive wear
• 1/8" shank: Fits compatible precision CNC spindle collets and tool holders

Diamond-Flute Geometry & Fish Tail Tip

Diamond-flute routers, also known as diamond-cut or diamond-pattern routers, use numerous small, intersecting cutting edges rather than conventional continuous spiral flutes. This geometry is commonly used for routing abrasive and layered materials such as FR4 printed circuit boards, G10 fiberglass laminates, and reinforced composites.

The fishtail tip features cutting edges at the tool end. Under suitable machining conditions, it supports entry into sheet materials and can help control edge damage and backside breakout during through-routing.

The 0.300" cutting length provides approximately 7.62mm of reach. Compared with a shorter cutting section of the same diameter, additional length allows machining thicker workpieces but also increases sensitivity to deflection and excessive side loads.

Choose a cutting length appropriate for the workpiece thickness, and provide sufficient clearance beneath the material when through-cutting.

Important: Diamond-flute refers to the cutting-edge geometry. R126 is uncoated solid carbide, not diamond-coated or PCD tooling.

Typical Applications

• PCB board outlines, slots, and cutouts
• FR4 and G10 fiberglass laminate routing
• Thicker PCB laminates and composite sheets requiring additional cutting reach
• Phenolic and epoxy laminate machining
• Fiberglass-reinforced composite trimming
• Carbon-fiber composites where uncoated carbide tooling is suitable
• Precision CNC profiling and prototype fabrication

Technical Specifications

Feeds & Speeds

Proper spindle speed, feed rate, cutting depth, and secure workholding are particularly important when machining abrasive PCB laminates with small-diameter carbide tools.

View Carbide Router Feed & Speed Charts and select the Diamond-Flute Router Chart for starting cutting recommendations for FR4, G10, fiberglass, and related PCB materials.

Recommendations are starting points only. Actual cutting conditions depend on the material, spindle capability, machine rigidity, workholding, tool condition, and cutting depth. Use conservative cutting loads, test on scrap material, and use appropriate dust extraction when machining fiberglass or carbon fiber.

Related Router Bits & Guides

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