Product Description
CMT 308.160.11 Dowel Drill - 5/8" x 1-3/16" x 2-17/64" RH is a precision-engineered tungsten carbide tipped boring tool built for clean, flat-bottom blind holes in panel processing and cabinetry applications. Manufactured by CMT, this right-hand rotation dowel drill features a 16mm cutting diameter and negatively ground spurs that deliver accurate, splinter-free entry and exit in solid wood, chipboard, MDF, HDF, plywood, laminates, and coated panels. Designed for use in multi-spindle CNC boring machines, CNC boring centers, and panel processing centers, it is a reliable choice for high-production woodworking and furniture manufacturing environments where bore quality and tool longevity are critical.
Key Features
- Tungsten Carbide (HW) Cutting Material - hard-metal grade carbide maintains a sharp cutting edge through demanding production runs in abrasive engineered wood panels, reducing downtime for tool changes.
- Negatively Ground Spurs - precision-sharpened spurs score the material fibers before the main cutters remove the chip, producing clean bore walls and a flat hole bottom with no tearout or fraying on the surface face.
- 2-Spur, 2-Tooth Geometry - a balanced two-spur, two-tooth configuration promotes even chip evacuation and reduces lateral stress on the shank, helping to maintain bore location accuracy over repeated cycles.
- Right-Hand (RH) Rotation - designed specifically for right-hand spindle rotation, ensuring compatibility with standard multi-spindle boring heads and CNC boring center configurations without adapter modification.
- 10x20mm Parallel Shank with Driving Flat - the precisely dimensioned parallel shank seats securely in standard boring machine chucks and spindle holders, eliminating slip under load and supporting consistent bore depth repeatability.
- 30mm Cutting Height - a 30mm cutting height provides adequate chip clearance during blind hole drilling, reducing heat buildup and helping extend the usable life of the carbide tip.
- Compact 57.5mm Overall Length - the short-series total length of 57.5mm fits tight boring head configurations while keeping the tool stiff and minimizing deflection, which translates directly to tighter hole tolerances.
Why This Product
- The negatively ground spur geometry is specifically engineered for blind hole drilling in panel materials - delivering flat-bottomed, clean-walled bores that meet the tight tolerances required in dowel joinery and cam-lock fitting applications.
- The tungsten carbide (HW) tip material holds its edge significantly longer than standard high-speed steel alternatives when cutting abrasive substrates like chipboard, MDF, and laminated panels - reducing the frequency of tool changes in high-volume production settings.
- The 10x20mm parallel shank with driving flat is a widely standardized interface for multi-spindle CNC boring machines and boring centers, making this drill a drop-in fit for most European-style panel processing equipment without requiring special toolholders.
- With a 16mm (5/8") bore diameter and a 30mm cutting height in a compact 57.5mm body, this short-series dowel drill is well suited for closely spaced spindle patterns where clearance between adjacent tools is limited.
Specifications
- Manufacturer Part Number: 308.160.11
- Brand: CMT Orange Tools
- Diameter: 16mm (5/8")
- Cutting Height: 30mm (1-3/16")
- Total Length: 57.5mm (2-17/64")
- Shank: 10x20mm
- Number of Spurs: 2
- Number of Teeth: 2
- Sharpening: Negatively ground spurs
- Rotation: Right-hand (RH)
- Blade Material: HW (Tungsten Carbide)
Approved Applications
- Chipboard
- MDF
- HDF
- Hardwood
- Softwood
- Plywood
- Laminates
- Coated Panels
Frequently Asked Questions
What machines is this dowel drill compatible with?
This drill is designed for use in multi-spindle CNC boring machines, CNC boring centers, panel processing centers, and boring machines equipped with an appropriate chuck or adapter that accepts a 10x20mm parallel shank with a driving flat.
Is this drill designed for blind hole drilling or through-hole drilling?
This is a blind hole dowel drill. The negatively ground spur geometry and flat-bottom cutting profile are specifically designed to produce clean, flat-bottomed blind holes - the type required for dowel pins, cam fittings, and shelf pin sockets in panel-based furniture construction.
What does "negatively ground spurs" mean and why does it matter?
Negatively ground spurs are sharpened with a negative rake angle, which means they score and sever the surface fibers of the workpiece ahead of the main cutting teeth. This technique significantly reduces surface tearout and splintering at the bore entry point, which is especially important when drilling laminates, coated panels, and veneered chipboard where a clean surface finish is required.
Can this drill be used for left-hand spindle rotation?
No. This model is designed exclusively for right-hand (RH) rotation. Using a right-hand drill in a left-hand spindle will prevent the cutting edges from engaging the material correctly and can damage both the tool and the workpiece. For left-hand rotation spindles, a corresponding LH-designated drill would be required.
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