Product Description
CMT Dowel Drill for Through Holes - 5 x 27 x 57.5mm, Right-Hand Rotation is a precision-engineered 2-flute carbide-tipped boring tool built for clean, accurate through-hole drilling in panel processing and furniture manufacturing. Designed for use in multi-spindle CNC boring machines and panel processing centers, this dowel drill delivers flat-bottom entry and blowout-free exit geometry, making it the go-to choice for high-volume dowel joint production in chipboard, MDF, solid wood, and coated panels. The hardmetal (HW) cutting head paired with a PTFE-coated spiral body keeps pitch and resin from building up on the flutes, maintaining consistent performance across extended production runs.
Key Features
- Hardmetal (HW) cutting head with precision-balanced centre point - delivers accurate bore entry and prevents the bit from wandering, ensuring every hole is positioned exactly where the joint requires it.
- 2 precision-ground cutting edges (Z2) - two flutes reduce cutting force per edge, producing smoother bore walls and extending tool life between sharpenings in demanding production environments.
- PTFE coating on the spiral portion - the low-friction orange or black P.T.F.E. coating prevents pitch, resin, and glue buildup on the flutes, reducing drag and keeping the tool cutting cleanly without frequent cleaning stops.
- Super-strength steel body - provides the structural rigidity needed to resist deflection during high-speed boring, contributing to straight, consistent hole geometry across repeated cycles.
- Parallel shank with driving flat and length-adjusting screw - the 10 x 26mm shank secures firmly in multi-spindle boring machine chucks and allows precise depth-of-reach adjustment without removing the tool from the machine.
- Through-hole geometry optimized for dowel connections - the drill is specifically ground for through-hole drilling, preventing breakout on the exit face of the panel for clean, assembly-ready holes.
- Right-hand rotation (RH) - compatible with the standard spindle direction of the vast majority of CNC boring centers and multi-spindle machines used in furniture panel production.
- Sharpenable design rated for through holes at 60 - the tool can be resharpened rather than discarded after wear, reducing tooling cost over time in continuous production settings.
Why This Product
- Engineered specifically for through-hole dowel boring - unlike general-purpose drill bits, the through-hole geometry of this CMT dowel drill is ground to exit cleanly through the back face of the panel, eliminating the tearout and blowout that would compromise a dowel joint or visible furniture surface.
- PTFE-coated flutes reduce downtime on the production line - the non-stick spiral coating actively resists the resin and adhesive buildup that slows conventional drills, meaning fewer cleaning interruptions and more consistent cycle times when processing chipboard, MDF, and coated panels.
- Precision-balanced HW head supports accurate hole placement - the hardmetal tip with balanced centre point keeps bore position on target even at production feed rates, which is critical when drilling for tight-tolerance dowel alignment in flat-pack and cabinet furniture assembly.
- Parallel shank with length-adjusting screw fits standard boring machine setups - the 10 x 26mm parallel shank with driving flat and adjusting screw is compatible with multi-spindle CNC boring machines and panel processing centers, making this tool a drop-in addition to existing tooling configurations without adapter hardware.
Specifications
- Manufacturer Part Number: 313.050.11
- Brand: CMT Orange Tools
- Diameter: 5mm
- Cutting Height: 27mm
- Total Length: 57.5mm
- Shank: 10 x 26mm
- Number of Flutes: 2
- Blade Material: HW (Hardmetal / Carbide-Tipped)
- Rotation: Right-Hand (RH)
- Sharpening: Through holes 60
- Application Type: Through Hole Dowel Drilling
Approved Applications
- Through-hole dowel joint drilling in furniture panel components
- Flat-pack and ready-to-assemble furniture manufacturing
- Cabinet panel processing and boring
- Multi-spindle CNC boring machine operations
- CNC boring center panel processing
- Boring machine operations with adapter or chuck
- Drilling chipboard, MDF, HDF, hardwood, softwood, plywood, laminates, and coated panels
Frequently Asked Questions
What is the difference between a through-hole dowel drill and a blind-hole dowel drill?
A through-hole dowel drill, like this CMT 313.050.11, is specifically ground to pass completely through the workpiece panel, producing a clean exit hole without breakout or tearout on the back face. A blind-hole drill is designed to stop at a precise depth inside the material without exiting. Using the correct geometry for your application is important - through-hole drills used in blind-hole applications can leave an inconsistent floor, while blind-hole drills forced through material may cause severe exit damage.
What does the PTFE coating on the spiral actually do during drilling?
The orange or black P.T.F.E. coating applied to the spiral portion of this drill acts as a low-friction, non-stick surface layer on the flutes. During boring operations in resin-rich materials like chipboard, MDF, or coated panels, pitch and adhesive residue can build up on uncoated flutes, increasing friction, heat, and cutting resistance. The PTFE coating prevents that buildup, keeping the flutes clear and reducing the drag that would otherwise cause rough bore walls or premature tool wear.
What boring machines is this dowel drill compatible with?
The CMT 313.050.11 features a 10 x 26mm parallel shank with a driving flat and a length-adjusting screw. This configuration is designed for use in multi-spindle CNC boring machines, CNC boring centers, and panel processing centers. It can also be used in boring machines equipped with a compatible adapter or chuck. The driving flat on the shank prevents rotation slip under load, and the length-adjusting screw allows precise reach calibration without removing the tool from the spindle.
Can this drill bit be resharpened, and how many times?
Yes, the CMT 313.050.11 is a sharpenable tool. The source specification indicates it is rated for through-hole sharpening at 60, meaning the cutting edges can be precision-ground back to specification rather than discarded after wear. This resharpening capability reduces long-term tooling cost in production environments where these bits are run continuously across large panel volumes.
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