Hex Shank Vacuum Brazed Diamond Hole Saw - Core Drill Bits for Tile, Ceramic, Granite & Marble

• Customization: Available
• Customized: Non-Customized
• Standard: API
• Length: Jobber-length
• Type: Core Drill Bit
• Material: Diamond
• Usage: Masonry Drilling, Stone
• Transport Package: Carton
• Specification: 1/4" ~ 2"
• Trademark: ODT or OEM
• Origin: China
• HS Code: 8501
• Production Capacity: 300000/Day

Product Description

Product Description

Engineered for heavy-duty stone processing, these diamond core bits feature 3.8ct/cm² vacuum-brazed diamond coating (40/50 grit) on 65Mn steel bodies. The reinforced hex shank (22.23mm) locks securely in angle grinders (100-150mm disc size), delivering 3x faster drilling than traditional hole saws. Optimized spiral grooves dissipate heat at 5000 RPM, enabling dry cutting of 20mm-thick granite in 15 seconds. Ideal for HVAC installations, plumbing, and construction projects requiring precision holes in mixed materials.

Specification

_{Key Product Features}

This revolutionary 12-in-1 drilling system combines three breakthrough technologies:

Smart Shank Adapter - Patented 3-in-1 shank (1/4" hex/5/8" thread/M14) fits 95% of global power tools.
Diamond Matrix Control - 40/60/80 grit zones for glaze penetration → cutting → polishing in single pass.
Thermal Armor Coating - Ceramic-reinforced steel body reduces heat transfer by 60%, enabling 8000 RPM dry drilling.
Achieves 0.03mm precision on 12mm-thick porcelain tiles and 5mm tempered glass. Includes vibration-dampening guide jig for handheld stability.

Specifications and Dimensions

Angle Grinder Focused - 22.23mm hex shank fits 100-150mm grinders
Hybrid Cooling System - Laser-cut slots + air vents reduce temperature by 50%
Multi-Material Mastery - Single bit drills granite (Mohs 6-7), ceramic (Mohs 8), and concrete (50MPa+)
Anti-Breakage Design - 3.5mm thickened steel wall withstands 80kg lateral force
Fast Debris Clearance - 45° spiral angle expels chips 2x faster
CE/GS Certified - Meets EU power tool safety standards

Item No.	Diamond Grit Size	Threaded Interface
5mm-150mm (Customizable)	6~18mm (46#) 20mm and above (36#)	M14
This product is suitable for making holes in hard materials such as marble, concrete, granite slabs, and full porcelain tiles. It is sharp, durable, with a clean cut, and easy to use.

Drawings & Dimensions

Detailed CAD drawings and dimensional diagrams are available for download here or upon inquiry. Our engineering team can provide tailored designs to meet specific project requirements.

Parameter	Specification
Applicable Material	Ceramic tiles/Porcelain/Glass/Marble (Mohs hardness ≤ 8)
Size Range	5/6/8/10/15/20/25/30/35/40/45/50mm
Tolerance Accuracy	±0.05mm (ISO 2768-m standard)
Maximum Speed	Dry drilling: 8000 RPM, Wet drilling: 5000 RPM
Cutting Depth	Glass: 8mm, Ceramic tile: 20mm

Why Choose Us?

Other Products

OEM/ODM capabilities
Competitive pricing & bulk discounts
Fast shipping & customs clearance support
Turnkey project solutions

Packaging & Shipping

FAQ

Q: Can it drill through 10mm thick tempered glass?
A: Yes, use water cooling and maintain 800-1200 RPM for best results.

Q: How to attach the vacuum base?
A: Press the base firmly on flat surfaces – the suction cup self-seals in 3 seconds.

Q: Is water cooling mandatory?
A: Required for glass and reinforced concrete; optional for tiles and marble.

Q: What's the diamond grit size?
A: 50/60 grit for fast cutting, 80/100 grit for smooth finishes.

Q: Compatible with hammer drills?
A: Only for rotary mode. Hammer function will damage the diamonds.