CMT Hinge Boring Bit 20 x 70mm Right-Hand is a long-series tungsten carbide tipped boring bit engineered for drilling precise flat-bottom hinge cup holes in cabinet components. Built on a super-strength steel body with a PTFE-coated spiral, this 20mm diameter bit delivers clean, accurate bores required for European-style concealed hinge installation. With a right-hand rotation, 2 precision-ground cutting edges, and a parallel shank with driving flat and length adjusting screw, this bit is purpose-built for repeatable performance in panel processing and cabinetmaking operations.

Key Features

• Tungsten Carbide (HW) Cutting Head with Precision Balanced Centre Point - the carbide head maintains sharp, accurate entry even in dense materials like hardwood and chipboard, reducing wander and ensuring a true flat-bottom hole every time.
• 2 Precision-Ground Cutting Edges (Z2) with Negatively Ground Spurs - produces clean bore walls and crisp, splinter-free entry points, eliminating tearout on cabinet door faces and panel surfaces.
• PTFE-Coated Spiral Flutes (Orange or Black) - the low-friction coating prevents pitch and resin buildup during drilling, reducing heat and extending tool life across high-volume production runs.
• Super-Strength Steel Body - resists flex and vibration under load, keeping the bit stable in multi-spindle CNC boring machines and drill presses alike.
• Parallel Shank (10 x 26mm) with Driving Flat and Length Adjusting Screw - allows secure, slip-free mounting and precise depth setting for consistent hinge cup depth across every bore in a production run.
• Right-Hand (RH) Rotation - matches standard CNC boring centers, panel processing centers, and handheld drills for straightforward, compatible setup without spindle modification.
• Long-Series 70mm Total Length - provides the reach needed for thicker cabinet components where short-series bits cannot achieve the required depth.

Why This Product

• The 20mm diameter is the industry-standard size for European concealed hinge cup holes, making this bit a direct fit for Blum, Grass, Salice, and similar hinge systems without any resizing or adapting.
• The long 70mm overall length is specifically designed for thicker cabinet components - such as face-frame stiles or double-panel constructions - where standard-length boring bits cannot reach the required cup depth.
• Negatively ground spurs combined with a carbide cutting head produce a flat-bottom, clean-walled bore in a single pass through solid hardwood, MDF, plywood, and chipboard, reducing secondary cleanup operations.
• The PTFE-coated spiral and adjusting screw shank make this bit well-suited for high-cycle production environments, supporting consistent depth settings and reduced pitch buildup over extended runs.

Specifications

• Manufacturer Part Number: 369.200.11
• Brand: CMT Orange Tools
• Diameter: 20mm
• Total Length: 70mm
• Shank: 10 x 26mm
• 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

Approved Applications

• Drilling flat-bottom hinge cup holes for European concealed hinge installation
• Cabinet door hinge mounting in solid hardwood, softwood, chipboard, MDF, and plywood
• Panel processing on CNC boring centers and multi-spindle boring machines
• Hinge cup boring in thicker cabinet components requiring long-series reach