Product Description
The CMT 317.450.11 Hinge Boring Bit is a precision-engineered 45mm diameter boring tool designed for drilling flat-bottom hinge cup holes in cabinet doors, face frames, and panel components. Built by CMT with a tungsten carbide (HW) cutting head and super-strength steel body, this right-hand rotation bit delivers the clean, flat-bottomed bores required for European-style concealed hinge installation. With a parallel shank measuring 10x26mm complete with a driving flat and length adjusting screw, it is compatible with boring machines equipped with adaptors or chucks, making it a dependable choice for cabinet shops, millwork operations, and woodworking production environments.
Key Features
- HW (Tungsten Carbide) Cutting Head - precision ground carbide construction maintains a sharp edge through high-volume boring in hardwood, softwood, chipboard, MDF, and plywood, reducing downtime from frequent resharpening.
- Super-Strength Steel Body with PTFE Coating - the cutter portion is coated with orange or black P.T.F.E., preventing pitch and glue buildup on the tool surface and extending effective service life between cleanings.
- Precision Balanced Centre Point - the HW centre point seats accurately at the start of each bore, preventing bit wandering and ensuring consistent hole placement critical for hinge alignment.
- 2 Negatively Ground Spurs (V2) - the negatively ground spur geometry scores the material perimeter cleanly before the cutting edges remove waste, producing smooth bore walls and chip-free entry circles even in veneered or laminated panels.
- 2 Precision Ground Cutting Edges (Z2) - dual carbide cutting edges create a flat, true bore bottom - the geometry required for European concealed hinges to seat properly and function without play.
- Parallel Shank with Driving Flat and Length Adjusting Screw - the 10x26mm parallel shank locks securely in machine adaptors or chucks and allows precise depth adjustment, giving operators repeatable boring depth across a production run.
- Right-Hand (RH) Rotation - engineered for standard right-hand rotation boring machines and drill presses, ensuring compatibility with the most common machine configurations in cabinetry production.
Why This Product
- The 45mm diameter matches the industry-standard cup size for European concealed hinges, eliminating guesswork and ensuring a direct fit for hinge cup installation in cabinet doors and face frames.
- The negatively ground spur geometry combined with the precision balanced HW centre point produces clean bore walls and a flat bottom in a single pass - reducing sanding, rework, and material waste on finished cabinet components.
- The parallel shank with a driving flat and length adjusting screw allows the bit to be set to an exact boring depth and held there reliably, supporting consistent results across multi-spindle and single-spindle machine setups with adaptors or chucks.
- The P.T.F.E.-coated cutter body resists pitch and adhesive buildup that would otherwise degrade cut quality over time, keeping the tool performing at a production level with minimal maintenance interruptions.
Specifications
- Manufacturer Part Number: 317.450.11
- Brand: CMT Orange Tools
- Diameter: 45mm
- Total Length: 57.5mm
- Shank: 10x26mm
- Rotation: RH (Right-Hand)
- Number of Spurs: 2
- Number of Cutting Edges: 2
- Tooth Geometry: Negatively ground spurs
- 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 cup boring
- Face frame hinge mounting preparation
- Panel processing in chipboard, MDF, plywood, solid hardwood, and softwood
- Use in boring machines equipped with adaptors or chucks
Frequently Asked Questions
What machines is the CMT 317.450.11 compatible with?
This hinge boring bit is designed for use in boring machines equipped with adaptors or chucks. The 10x26mm parallel shank with a driving flat allows it to be secured reliably in machine chucks or standard adaptor systems used on multi-spindle CNC boring machines, boring centers, and panel processing equipment.
Why does a hinge boring bit need to produce a flat-bottom hole?
European-style concealed hinges require a flat-bottom cup hole so the hinge cup seats fully and evenly against the door material. A pointed or angled bore bottom would prevent the hinge from seating correctly, causing alignment problems and visible gaps in the finished cabinet door. The CMT 317.450.11 uses 2 precision ground HW cutting edges (Z2) specifically to produce this flat-bottom geometry.
What does the P.T.F.E. coating on the cutter portion do?
The orange or black P.T.F.E. coating applied to the cutter portion of the bit resists pitch and glue buildup on the tool surface. In production environments where adhesive residue and wood resins accumulate quickly, this coating keeps the cutting geometry clear and reduces the frequency of cleaning required to maintain cut quality.
What is the purpose of the negatively ground spurs on this bit?
The 2 negatively ground spurs (V2) score and sever the wood fibers at the outer perimeter of the bore circle before the main cutting edges remove the material. This action prevents tear-out at the entry point of the hole - a critical quality factor when boring into veneered panels, melamine-coated chipboard, or MDF where a clean, chip-free hole edge is required for a professional finish.
Reviews
FAQs
Standard Shipping is free on most orders over $50 within the contiguous US. If the order is under $50.00, the shipping is $9.99 set fee for shipping within the contiguous US.
Most of our products will ship within 1 to 3 Business Days. Some Special order products will ship within 2 to 5 Business Days. Preorders will be shipped to you on a first come first serve basis as soon as available from the manufacturer. Items that are "Made-to-Order" (Custom order products) will be shipped when fabrication is completed, shipping and delivery times will vary and depend on manufacturing.
Products that are shipped directly from the manufacturer will have processing and fulfilment times subject to manufacturer availability.
Preorders are shipped on a first come first serve basis as soon as available from the manufacturer, the sooner you place your Preorder the sooner your order will ship.
Freight shipping Policy:
Orders/Items too large or heavy may require special handling/Shipping and may require to be sent by truck. Someone must be present to accept truck deliveries. Standard truck delivery is to a dock facility designed to receive freight. You will be notified within 24 hours of ordering to confirm delivery. Lift gates for deliveries are available for an additional fee.
We offer Financing options through Clicklease
Please email your Return request to info@FactoryDirectSupplyOnline.com
Include the order number and the reason for your return.
All returns, regardless of their categorization, must include all original parts, be in their original packaging, and in the condition in which they were received. You may not qualify to receive a refund If the returned item is used, damaged, missing any parts, or is damaged during return shipping.
Checkout our complete Return policy
You can contact us through our contact page! We will be happy to assist you.