TW3231 Hollow Diamond Core Drill Bit G1/2

TW3231 Hollow Diamond Core Drill Bit

TW3231 Hollow Diamond Core Drill Bit is designed for CNC and NC stone drilling applications. Featuring a G1/2 thread connection and hollow diamond core structure, it delivers fast drilling speed, excellent cooling performance and clean hole finishing. It is suitable for granite, marble, sandstone, limestone and engineered stone processing. Hollow core drill bits remove only the annular material, enabling faster drilling with reduced cutting resistance. :contentReference[oaicite:0]{index=0}

Features

• Premium hollow diamond core drilling design
• G1/2 thread connection
• Fast drilling speed and high efficiency
• Excellent chip removal and cooling performance
• Clean and accurate hole finishing
• Long service life with excellent wear resistance
• Suitable for CNC and NC drilling machines

Specifications

• Model: TW3231
• Type: Hollow Diamond Core Drill Bit
• Diameter: Φ14mm-Φ35mm
• Working Height: 50mm / 100mm
• Connection: G1/2
• Teeth Thickness: 2mm / 3mm

Advantages

• Fast drilling speed
• Excellent cooling performance
• Smooth and clean hole edges
• Reduced cutting resistance
• Long service life

Applications

Suitable for granite, marble, sandstone, limestone and engineered stone. Ideal for faucet holes, sink holes, installation holes and precision drilling operations in professional stone fabrication workshops and CNC machining centers.