CMT XTreme Solid Carbide Twist Drill - 4mm Left-Hand, 120 deg. Point by CMT is a precision-engineered solid carbide boring tool designed for through-hole drilling on CNC boring machines and multi-spindle boring centers. Built from premium HWM solid carbide, this 4mm left-hand drill delivers the wear resistance and cutting accuracy that production woodworking operations demand. With a 120 deg. V-point sharpening geometry and 2 precision-ground cutting edges, it excels at clean, repeatable dowel holes in panel processing, furniture manufacturing, and engineered wood applications.

Key Features

• HWM Solid Carbide Construction - premium-grade carbide material provides exceptional wear resistance, extending tool life in high-speed, high-cycle CNC production environments.
• XTreme 120 deg. Point Sharpening with Negatively Ground Spurs - the aggressive XTreme sharpening geometry combined with negatively ground spurs ensures cleaner entry holes and reduced tear-out in panel materials such as chipboard, MDF, and laminates.
• Left-Hand (LH) Rotation - engineered specifically for left-hand spindle positions on CNC boring machines and multi-spindle boring centers, ensuring correct cutting direction and optimal chip evacuation without tool rollback.
• 2 Precision-Ground Cutting Edges (Z2) - dual cutting edges provide balanced cutting forces for accurate, straight holes and consistent hole diameter across every production cycle.
• 2 Spiral Flutes - twin spiral flutes efficiently evacuate chips from the bore, reducing heat buildup and preventing re-cutting of debris that can degrade hole quality.
• Common Shank Design (S=D) - the shank diameter matches the drill diameter at 4mm, allowing direct compatibility with CMT 364 and 365 series adapters and bushings without the need for reduction sleeves.
• Compact 55mm Overall Length with 27mm Cutting Depth - the 55mm total length and 27mm cutting height are sized specifically for standard CNC boring machine spindle configurations, optimizing rigidity and minimizing runout.

Why This Product

• The XTreme negatively ground spur sharpening geometry is purpose-built to minimize fiber tear-out and surface chipping when drilling dowel holes in laminates, MDF, and hardwood - making it the right choice for furniture panels where face quality matters.
• Solid carbide construction (HWM) outlasts high-speed steel alternatives in production CNC environments, reducing downtime from tool changes and maintaining consistent hole geometry over long production runs.
• Left-hand rotation is specifically engineered for use with CMT 364 and 365 adapter systems, making this drill a direct fit for multi-spindle boring centers that require matched LH spindle tooling without modification.
• The common shank design (S=D at 4mm) simplifies tooling inventory - one drill size fits directly into the adapter without step-down collets or custom bushings, streamlining setup on the boring machine.

Specifications

• Manufacturer Part Number: 363.040.22
• Brand: CMT Orange Tools
• Sharpening Type: Extreme
• Diameter: 4mm (5/32 in.)
• Cutting Height: 27mm
• Total Length: 55mm
• Shank Diameter: 4mm
• Rotation: Left-Hand (LH)
• Number of Cutting Edges: 2
• Number of Flutes: 2
• Number of Spurs: 2
• Blade Material: HWM Solid Carbide
• Point Angle: 120 deg.
• Shank Type: Common shank (S=D - shank diameter equals drill diameter)

Approved Applications

• Through-hole drilling for dowel connections on CNC boring machines
• Panel processing on multi-spindle boring centers (with 364/365 series adapters)
• Furniture manufacturing - cabinet panels, face frames, and carcass assembly
• Solid hardwood boring
• Softwood boring
• Chipboard and particle board drilling
• MDF and HDF panel drilling
• Plywood through-hole boring
• Laminated panel drilling