Product Specification

Product Overview

Our U-Double Flute 14mm Masonry Core Drill Bits are engineered for high-performance drilling in demanding construction and renovation environments. Designed with a unique dual-flute geometry, these bits offer superior dust extraction and heat dissipation, ensuring clean holes and extended tool life when working with abrasive materials like concrete, brick, and stone.

Technical Specifications (Standard Range)

Manufacturing Process & Advanced Technology

The quality of our masonry bits is rooted in a rigorous multi-stage manufacturing process:

1. Precision Forging: The bit body is CNC-machined from 40Cr alloy steel to ensure perfect concentricity.

2. U-Double Flute Grinding: The wide, deep U-shaped double flutes are precision-ground to accelerate the discharge of waste material, reducing friction and preventing the bit from binding.

3. Vacuum Brazing: The tungsten carbide tips are secured using an automated vacuum brazing process at over 1100°C, ensuring the tip remains intact even under extreme thermal stress.

4. Induction Hardening: The entire bit undergoes targeted heat treatment to balance flexibility (to prevent snapping) and surface hardness.

Key Advantages

• Rapid Dust Clearance: The U-Double Flute design moves 30% more debris per revolution compared to standard single-flute bits.

• Precision Centering: The reinforced carbide tip features a sharpened centering point to prevent "walking" on smooth surfaces like tiles or polished stone.

• Reduced Vibration: Optimized flute geometry minimizes kickback and vibration, reducing operator fatigue and protecting the power tool’s motor.

• Exceptional Durability: Built to withstand high-impact drilling, providing a significantly lower "cost-per-hole" ratio for professional contractors.

Applications

This drill bit set is versatile and compatible with rotary hammers and impact drills. It is ideal for:

• Masonry: Hard brick, aerated concrete blocks, and mortar.

• Stone: Natural stone, granite (light-duty), and limestone.

• Tile & Ceramics: Specialized for drilling through ceramic tiles (low-speed recommended) before engaging the masonry substrate.

• Construction: Perfect for installing anchors, electrical boxes, and plumbing conduits.

Packaging & Logistics

We provide flexible packaging solutions for retail and industrial wholesale:

• Retail: Individual PVC hang-tag bags or transparent plastic tubes (DIY-friendly).

• Sets: 5-piece or 10-piece sets in high-impact ABS plastic cases or metal index boxes.

• OEM Branding: Custom laser-etching of logos on the bit shank and private-labeling for packaging available for bulk orders.

Frequently Asked Questions (FAQ)

Q1: Can these bits be used with standard non-impact drills?

A1: While they can fit into standard chucks, we recommend using an impact or hammer drill setting for masonry to achieve the best efficiency and prevent glazing the carbide tip.

Q2: How do I prevent the bit from overheating when drilling hard stone?

A2: For extremely hard materials, we recommend a "pecking" motion (periodically withdrawing the bit) and using water as a coolant to extend the lifespan of the carbide tip.

Q3: Is the 14mm size suitable for standard wall anchors?

A3: Yes, the 14mm diameter is a standard size for heavy-duty expansion bolts and specialized industrial wall plugs.

Q4: Do you offer custom lengths for the 14mm core bits?

A4: Yes, we can manufacture lengths ranging from 110mm up to 600mm based on your project requirements.