CMT Hinge Boring Bit 15 x 70mm Right-Hand by CMT is a long-series carbide-tipped boring bit engineered for drilling clean, flat-bottom hinge cup holes in cabinet door panels and thicker cabinet components. Designed specifically for European-style concealed hinge installation, this 15mm diameter bit features a tungsten carbide (HW) cutting head, 2 precision-ground negatively set spurs, and a PTFE-coated spiral that resists pitch and adhesive buildup during production runs. The parallel 10x26mm shank with a driving flat and length adjusting screw makes it compatible with multi-spindle boring machines, CNC boring centers, and panel processing equipment wherever consistent, repeatable hinge cup drilling is required.

Key Features

• Tungsten Carbide (HW) Cutting Head: hard-wearing carbide material maintains a sharp edge through repeated boring cycles in hardwood, softwood, MDF, chipboard, and plywood - reducing replacement frequency and downtime in production environments.
• Super-Strength Steel Body: the bit body resists flex and deflection during high-speed boring, delivering straight, true holes even in thicker cabinet panels.
• PTFE-Coated Spiral Flutes: the orange or black PTFE coating on the spiral portion prevents pitch and glue buildup, keeping the flutes clear and maintaining consistent chip evacuation across long runs.
• Precision Balanced Centre Point: the HW centre point self-positions accurately at the marked bore location, eliminating wander at entry and producing precisely located hinge cup holes every cycle.
• 2 Precision-Ground Negatively Set Spurs (Z2): negatively ground spur geometry scores the material perimeter cleanly before the main cutters engage, producing smooth bore walls and splinter-free edges on finished panel faces.
• 2 Spiral Flutes: dual spiral flutes efficiently evacuate chips away from the cutting zone, reducing heat buildup and keeping the bore clean for a flat-bottom finish required by European hinge cups.
• Parallel Shank with Driving Flat and Length Adjusting Screw: the 10x26mm shank seats securely in boring machine chucks and multi-spindle heads, while the adjusting screw allows fine-tuning of the drilling depth without changing tooling.
• Right-Hand Rotation (RH): matches the standard rotation direction of most boring machines and CNC centers, ensuring correct cutting geometry and compatibility with conventional toolholders.
• 15mm Diameter: the 15mm bore diameter is the industry-standard size for the majority of European concealed hinge cups, making this bit a direct, ready-to-use solution for cabinet door hinge installation.
• 70mm Total Length: the extended 70mm length provides the reach needed to bore hinge cup holes in thicker cabinet components where standard-length bits cannot achieve full depth.

Why This Product

• Purpose-built for European concealed hinge installation: the 15mm cutting diameter and flat-bottom boring geometry match the cup requirements of European-style concealed hinges directly - no adapting or workaround tooling needed for standard cabinet door hinge work.
• Long-series reach for thicker panels: at 70mm total length, this bit handles hinge cup drilling in thicker cabinet components where standard-length boring bits fall short, making it the right choice when working with heavier door or panel stock.
• Reduced cleanup and maintenance between runs: the PTFE-coated spiral resists pitch and adhesive buildup, meaning less time cleaning the bit and more consistent bore quality over the course of a production shift.
• Secure, adjustable seating in multi-spindle and CNC equipment: the driving flat and length adjusting screw on the parallel shank let operators dial in exact bore depth and lock the bit firmly in place, reducing setup error and keeping hinge cup positions consistent across a batch of cabinet doors.

Specifications

• Manufacturer Part Number: 369.150.11
• Diameter: 15mm
• Total Length: 70mm
• Shank: 10x26mm
• Rotation: Right-Hand (RH)
• Number of Spurs: 2
• Number of Teeth: 2
• Tooth Geometry: Negatively ground spurs
• Blade Material: HW (Tungsten Carbide)
• Product Type: Hinge Boring Bit
• Brand: CMT Orange Tools

Approved Applications

• Drilling flat-bottom hinge cup holes for European concealed hinge installation
• Cabinet door hinge mounting in production and shop environments
• Boring hinge cup holes in solid hardwood cabinet components
• Hinge cup drilling in softwood, chipboard, MDF, and plywood panels
• Use in multi-spindle CNC boring machines, CNC boring centers, and panel processing centers
• Use in boring machines fitted with a compatible adapter or chuck
• Use in drill presses and handheld drills with parallel shank compatibility