The Freud 40 mm Diameter Cylinder (Hinge) Bit is an industrial-grade carbide tipped boring bit engineered for precise, clean hinge boring on automatic and manual multi-spindle boring machines. Featuring a 10 mm shank with an adjustable top screw for broad machine compatibility, this left-hand rotation bit is purpose-built to drill through composites, solid surface materials, veneered plywood, hardwoods, and softwoods with consistent accuracy. Two wing cutters and two spur cutters work together to prevent bottom-side tear-out, delivering cleaner holes and professional results across a wide range of panel and cabinet applications.

Key Features

• Industrial carbide tips - provide extended cutting life and consistent performance across high-volume production runs on multi-spindle machines.
• Two wing cutters and two spur cutters - prevent bottom-side tear-out so you get clean, accurate holes in veneered plywood and finished panel materials without surface damage.
• 10 mm shank with adjustable top screw - makes the bit compatible with most boring machines, reducing the need for special adapters or machine modifications.
• Left-hand (LH) rotation - matched specifically to left-hand spindle positions on multi-spindle boring machines, ensuring correct cutting geometry and safe operation.
• 40 mm diameter, 57.5 mm length - sized precisely for standard hinge cup boring used in cabinet and furniture manufacturing.
• Wood case included - protects the carbide cutting edges during storage and transport, helping maintain sharpness and extending the usable life of the bit.
• Freud Limited Lifetime Guarantee - provides long-term assurance on tool quality and manufacturing, giving buyers confidence in their investment.
• Made for composites, solid surface, veneered plywood, hardwoods, and softwoods - one bit handles the full range of materials common in cabinet shops and panel processing environments.

Why This Product

• Carbide tipped construction paired with a precision-ground cutting geometry means this hinge boring bit holds up in demanding production environments where repeated boring cycles would quickly dull lesser tools.
• The combination of wing cutters and spur cutters actively prevents tear-out on the underside of the workpiece - a critical requirement when boring veneered plywood or finished panel goods where surface quality matters.
• With a 10 mm shank and adjustable top screw design, this bit integrates directly into most multi-spindle boring machines without modification, saving setup time on the shop floor.
• Left-hand rotation and a 40 mm diameter make this bit a direct fit for left-spindle hinge cup positions in standard cabinet production - no guesswork about compatibility with common boring machine configurations.

Specifications

• Brand: Freud
• Manufacturer Part Number: CB40057L
• Category: Cylinder Bits
• Diameter: 40 mm
• Length: 57.5 mm
• Shank: 10 mm
• Rotation: LH
• Compatible Tools: Drill Press; Hand Held Drill
• Compatible Materials: Composites; Solid Surface; Veneered Plywood; Hardwoods; Softwoods
• Pack Quantity: 1
• Country of Origin: Italy

Approved Applications

• Drills all composition materials, solid surface materials, plywoods, hardwoods, and softwoods. Use on automatic and manual multi-spindle boring machines.
• Hinge cup boring for cabinet doors, furniture panels, and millwork requiring precise 40 mm diameter holes.
• Left-hand spindle positions on multi-spindle boring machines in production woodworking and cabinet manufacturing environments.

What's Included

• 1x Freud 40 mm Cylinder (Hinge) Boring Bit (CB40057L)
• Wood storage case for bit protection

Frequently Asked Questions

What rotation direction is this boring bit, and why does it matter?

This bit uses left-hand (LH) rotation, which is designed to match the left-hand spindle positions found on multi-spindle boring machines. Using the correct rotation direction is essential for proper cutting geometry and safe operation - using a right-hand bit in a left-hand spindle position will cause the bit to loosen and can damage the workpiece or machine.

What materials can the Freud CB40057L bore through?

This cylinder boring bit is designed to drill through composites, solid surface materials, veneered plywood, hardwoods, and softwoods. It is suitable for use on both automatic and manual multi-spindle boring machines as well as drill presses and hand held drills.

How does this bit prevent tear-out on the underside of the workpiece?

The bit features two wing cutters and two spur cutters that work together during the boring process. The spur cutters score the wood fibers ahead of the wing cutters, which prevents the material from tearing out on the bottom side of the hole - a particularly important feature when working with veneered plywood or finished panel surfaces where clean exit holes are required.

Is this bit covered by a warranty?

Yes. Freud backs this cylinder boring bit with their Limited Lifetime Guarantee, providing long-term coverage on the quality and workmanship of the tool.