CMT 378.052.11 Dowel Drill with Countersink for Through Holes is a precision-engineered carbide-tipped boring tool designed to drill, countersink, and fully penetrate panel materials in a single pass. Built with a hardmetal (HW) cutting tip and a right-hand rotation, this 5mm through-hole dowel drill is engineered for use in multi-spindle CNC boring machines, CNC boring centers, and panel processing equipment where clean, accurate through-hole penetration is required. Its 2-spur, 2-tooth geometry produces consistent bore quality across chipboard, MDF, HDF, plywood, laminates, and coated panel materials, making it a reliable choice for cabinet manufacturing, furniture production, and industrial woodworking operations.

Key Features

• Hardmetal (HW) Cutting Tip - tungsten carbide construction delivers long service life and maintains cutting edge sharpness through repeated use in abrasive engineered wood panels such as MDF, chipboard, and laminates.
• Through-Hole with Countersink Geometry - drills, countersinks, and fully penetrates the workpiece in one pass, eliminating secondary operations and reducing cycle time on CNC boring equipment.
• 2-Spur, 2-Tooth Configuration - precision-ground spurs score the panel surface before the main cutter engages, producing clean bore walls and chip-free entry points with no tearout on coated or laminated panels.
• 60 deg. Through-Hole Tooth Geometry - optimized sharpening angle for through-hole penetration ensures consistent chip evacuation and smooth exit holes on both faces of the workpiece.
• Right-Hand (RH) Rotation - matches the standard spindle direction of multi-spindle CNC boring machines and boring centers, enabling direct drop-in compatibility without adapter modification.
• 10x20mm Shank - engineered for secure seating in standard CNC boring machine chucks and adapters, minimizing runout and vibration during high-speed repetitive drilling cycles.
• 35mm Cutting Height with 70mm Total Length - provides sufficient flute engagement for full through-hole penetration while keeping overall tool length compact for tight multi-spindle head configurations.

Why This Product

• Combines drilling, countersinking, and through-hole penetration into a single tool pass - reducing tooling changes and improving throughput on panel processing lines handling chipboard, MDF, and laminated board.
• The 5mm diameter and 10x20mm shank directly match common CNC boring machine spindle specifications, making this a straightforward replacement or upgrade for standard through-hole dowel drilling applications.
• Hardmetal (HW) carbide construction stands up to the abrasive nature of engineered wood composites and coated panels, delivering more holes per edge than standard steel alternatives before resharpening is required.
• The 2-spur geometry protects panel surfaces at bore entry, which is especially important when working with decorative laminates and coated panels where surface quality directly affects finished product appearance.

Specifications

• Manufacturer Part Number: 378.052.11
• Brand: CMT Orange Tools
• Diameter: 5mm
• Cutting Height: 35mm
• Cutting Height I1: 31mm
• Total Length: 70mm
• Shank: 10x20mm
• Number of Spurs: 2
• Number of Teeth: 2
• Tooth Geometry / Sharpening: Through holes 60
• Rotation: Right-hand (RH)
• Blade Material: HW (Hardmetal / Carbide-Tipped)
• Series: With Countersink for Through Holes

Approved Applications

• Multi-Spindle CNC Boring Machine
• CNC Boring Center
• Panel Processing Center
• Boring Machine with Adapter or Chuck
• Chipboard and particleboard panel drilling
• MDF and HDF through-hole boring
• Hardwood and softwood dowel hole drilling
• Plywood panel processing
• Laminated and coated panel boring