Product Description
CMT Dowel Drill with Countersink - 10x20x57mm, S=10x20mm, Right-Hand Rotation by CMT is a professional-grade boring tool engineered for drilling and countersinking in a single pass on CNC boring machines and panel processing centers. Built with a tungsten carbide (HW) cutting head bonded to a super-strength steel body, this right-hand rotation drill delivers clean, accurate holes in composite panels, solid wood, and coated sheet goods where precision and efficiency are critical. The combined drilling and countersinking action creates a properly recessed seat for bolt heads and connectors without requiring a secondary tool change, keeping production lines moving and reducing cycle time on high-volume panel operations.
Key Features
- Tungsten Carbide (HW) Cutting Head - provides exceptional hardness and edge retention when boring abrasive materials like chipboard, MDF, and coated panels, extending tool life well beyond what standard high-speed steel can offer.
- Super-Strength Steel Body - the robust steel shank and body resist deflection under the lateral forces of a multi-spindle boring machine, maintaining dimensional accuracy hole after hole.
- PTFE-Coated Spiral Flutes - the orange or black P.T.F.E. coating on the spiral portion reduces friction and prevents pitch and adhesive buildup, so chips clear freely and the tool runs cooler during sustained production use.
- Precision-Balanced Centre Point - the HW centre point registers accurately on the workpiece surface before the cutting edges engage, eliminating wandering and producing consistently centered holes with no tear-out at entry.
- 2 Precision-Ground Cutting Edges (Z2) - dual cutting edges share the load evenly, delivering smooth bore walls and a flat-bottom hole geometry ideal for dowel joinery and connector fitting.
- 2 Ground Spurs (V2) - the pair of ground spurs score the panel face cleanly ahead of the cutting edges, preventing fiber lifting and surface delamination on laminates and coated panels.
- Integrated Countersink - drills and countersinks in one pass, eliminating the need for a separate countersinking step and reducing tooling costs in dowel drilling and connector recessing operations.
- 10x20mm Parallel Shank with Driving Flat and Length Adjusting Screw - the parallel shank seats securely in standard boring machine collets, while the driving flat prevents rotation under load and the adjusting screw allows precise depth setting without re-indicating.
- Right-Hand (RH) Rotation - matches the spindle direction of standard CNC boring centers and multi-spindle machines, ensuring correct chip evacuation and consistent surface finish on the entry face.
Why This Product
- One-pass drilling and countersinking - because the countersink is built into the tool geometry, a single plunge creates both the dowel bore and the recessed seat for a bolt head or connector, cutting cycle time and reducing the number of spindle positions required on the machine.
- Designed for demanding panel materials - the HW carbide head and PTFE-coated flutes are specifically suited to the abrasive nature of chipboard, MDF, HDF, and coated panels that quickly dull uncoated or non-carbide tools, making this drill a cost-effective choice for furniture and cabinet production.
- Precision ground for consistent joint quality - with 2 precision-ground cutting edges and 2 ground spurs, every hole produced meets the tight tolerances required for dowel joints and hardware connectors, reducing rejects and rework on finished panels.
- Secure shank system for reliable depth control - the parallel shank with driving flat and length adjusting screw locks the tool firmly in the collet and lets the operator dial in exact drilling depth, which is critical when recessing connectors flush with the panel surface.
Specifications
- Manufacturer Part Number: 376.102.11
- Brand: CMT Orange Tools
- Diameter: 10mm
- Cutting Height: 20mm
- Total Length: 57.5mm
- Shank: 10x20mm
- Rotation: RH (Right-Hand)
- Number of Cutting Edges: 2 (Z2)
- Number of Spurs: 2 (V2)
- Material: HW (Tungsten Carbide)
- Tool Type: Dowel Drill with Countersink
Approved Applications
- Drilling and countersinking in one pass on boring machines and CNC boring centers
- Dowel hole boring for furniture and cabinet assembly
- Bolt head and connector recessing in panel processing
- Through and blind hole drilling in chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels
- Multi-spindle CNC boring machine operations
- CNC boring center and panel processing center workflows
Frequently Asked Questions
What is the difference between this dowel drill and a standard dowel drill without a countersink?
This tool combines a 10mm dowel drill with an integrated countersink, allowing it to bore the dowel hole and create a recessed seat for a bolt head or connector in a single plunge. A standard dowel drill without a countersink produces only the cylindrical bore and would require a separate countersinking step to achieve the same result.
What shank size does this drill require, and how is it secured in the spindle?
This tool uses a 10x20mm parallel shank. It is secured with a driving flat that prevents rotation under cutting load, and a length adjusting screw that allows precise depth setting within the collet of a boring machine spindle.
Why does the spiral portion have a PTFE coating, and does it affect cutting performance?
The orange or black P.T.F.E. coating on the spiral flutes reduces friction between the tool and the workpiece material, and prevents pitch and glue from building up on the flute surfaces. This keeps chips clearing freely, reduces heat generation during sustained boring cycles, and helps maintain cutting performance over the tool's service life.
Is this tool suitable for use on coated or laminated panels?
Yes. The 2 precision-ground spurs (V2) score the panel surface ahead of the cutting edges, which prevents the surface laminate or coating from lifting or delaminating as the drill enters the workpiece. Combined with the HW carbide cutting head, this tool is well suited to coated panels, laminates, MDF, HDF, chipboard, and similar engineered wood products used in furniture and cabinet manufacturing.
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