The CMT 140.192.61 Diamond Compression Bit is a precision-engineered router cutter designed for CNC routing of composite panels, fiber-reinforced materials, and other demanding abrasive substrates. Built around a 1+1 cutting geometry that combines five diamond polycrystalline (DP) cutting edges with one hardwood (HW) edge, this 3/4 in. diameter bit delivers chip-free, finish-quality cuts on both the top and bottom faces of composite panels in a single pass - eliminating the tearout and delamination that can ruin expensive sheet goods. With a 3/4 in. x 50mm shank and right-hand rotation, it integrates directly into professional CNC routing setups where precision, tool life, and surface quality are critical.

Key Features

• Diamond Polycrystalline (DP) Cutting Edges - DP cutting material is exponentially harder than standard carbide, making it the right choice for abrasive composite panels, fiberglass, carbon fiber, and solid surface materials where carbide bits wear out prematurely.
• 1+1 Compression Geometry (5DP + 1HW) - The compression spiral cuts upward from the bottom and downward from the top simultaneously, producing clean, chip-free faces on both sides of the panel without requiring a second pass or finish sanding.
• Shear Angle Design - The shear angle geometry reduces cutting forces and heat buildup during CNC operations, resulting in smoother surface finishes and reduced stress on the machine spindle.
• Super Strength Steel Body - The bit body is constructed from super strength steel, providing the rigidity and vibration resistance needed to maintain dimensional accuracy during high-feed-rate CNC routing.
• 3/4 in. x 50mm Shank - The oversized shank diameter minimizes deflection during heavy-duty passes through thick composite panels, keeping cut lines straight and tolerances tight.
• 1-49/64 in. Cutting Height - Generous cutting height accommodates a wide range of composite panel thicknesses in a single setup, reducing tool changes and improving throughput on the CNC routing table.
• Right-Hand (RH) Rotation - Configured for standard CNC spindle rotation, ensuring compatibility with the vast majority of professional CNC routing machines without requiring any special toolholder or adapter.

Why This Product

• Purpose-built for abrasive composite materials - Standard carbide bits dull rapidly when cutting fiberglass, carbon fiber, and Corian. The DP cutting edges in this bit are specifically engineered to maintain sharpness through the high-abrasion demands of these materials, extending tool life significantly compared to conventional carbide tooling.
• One-pass, two-sided quality - The 1+1 compression geometry eliminates the need to flip panels or make multiple passes to achieve clean faces on both sides, reducing cycle time and material handling on the CNC machine.
• Designed for professional CNC routing - With a 4-1/8 in. total length, 3/4 in. x 50mm shank, and robust steel body, this bit is sized and built for production CNC environments where consistency and repeatability matter across high volumes of cuts.
• Reduced post-processing on composite panels - Because the shear angle and compression geometry produce clean edges in a single operation, less time is spent on edge finishing, trimming, or sanding - lowering total labor cost per part.

Specifications

• Manufacturer Part Number: 140.192.61
• Brand: CMT Orange Tools
• Product Type: Diamond Compression Router Bit
• Material: DP (Diamond Polycrystalline)
• Diameter: 3/4 in.
• Cutting Height: 1-49/64 in.
• Total Length: 4-1/8 in.
• Shank: 3/4 x 50mm
• Number of Teeth: 1 + 1 (5DP + 1HW)
• Rotation: Right-Hand (RH)

Approved Applications

• CNC routing of composite panels
• Cutting fiber-reinforced materials including fiberglass and carbon fiber
• Routing Corian and solid surface materials
• Heavy-duty CNC production routing requiring chip-free edge quality
• Processing abrasive sheet goods where standard carbide tooling wears prematurely