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Johnson Tools Diamond Core Masonry Drill Bit Segment Crown Type For Granite Core Bit 1

Johnson Tools Diamond Core Masonry Drill Bit Segment Crown Type For Granite Core Bit 2

Johnson Tools Diamond Core Masonry Drill Bit Segment Crown Type For Granite Core Bit 3

Johnson Tools Diamond Core Masonry Drill Bit Segment Crown Type For Granite Core Bit 4

Johnson Tools Diamond Core Masonry Drill Bit Segment Crown Type For Granite Core Bit 5

Johnson Tools Diamond Core Masonry Drill Bit Segment Crown Type For Granite Core Bit 6

Johnson Tools Diamond Core Masonry Drill Bit Segment Crown Type For Granite Core Bit 7

Johnson Tools Diamond Core Masonry Drill Bit Segment Crown Type For Granite Core Bit

Specifications:

Diameter: 6-100mm

Shank Type: M14, 1/2" Shaft, 5/8"-11 Thread

Segment type: Crown segment or normal segment

Drill Bit Type: Tile Drill Bit

Welding way: Outer diameter <18mm is silver soldering, ≥ 20mm is laser welding.

Material Compatibility: Stone drilling in counter top, kitchen, toilet.

Operating Conditions: Dry or Wet use

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PRODUCT ADVANTAGES

Our customer service team is a dedicated, hard-working group specially selected for their enthusiasm and commitment to providing excellent customer service. They offer advice, answer any queries.

HIGH-QUALITY DIAMOND：

Diamond adopted Element Six, Inland High Quailty Grade.

FULLY AUTOMATIC WELDING :

Welding strength exceeds more than 10-20% of the MPA Testing Strength.

5/8"-11/M14:

Various models can meet your different working requirements.

EASY TO OPERATE:

Vacuum brazing technology makes the diamond tip hole saw more sturdy than ordinary drills.

PRODUCT parameter

Diameter（mm）	Segment Dimension		Teeth No.	Vacuum brazed Protect Teeth
Diameter（mm）	Height	Thickness	Teeth No.	Vacuum brazed Protect Teeth
6	10	2	Crown	——
8	10	2	Crown	——
10	10	2	Crown	——
12	10	2.5	Crown	——
14	10	2.5	Crown	——
16	10	2.5	Crown	——
18	10	2.5	Crown	——
20	10	2.5	Crown	4（O）2（I）
25	10	2.5	Crown	4（O）2（I）
32	10	3	Crown	4（O）2（I）
35	10	3	4	4（O）2（I）
38	10	3	4	4（O）2（I）
40	10	3	4	4（O）2（I）
45	10	3	4	4（O）2（I）
50	10	3	5	4（O）2（I）
60	10	3	6	4（O）2（I）
65	10	3	6	4（O）2（I）
70	10	3	7	4（O）2（I）
80	10	3	8	4（O）2（I）
90	10	3	9	4（O）2（I）
100	10	3.5	9	4（O）2（I）
135	10	3.5	10	——

product usage

Exquisite Core Drilling in Thinner Stones:

Engineered for precision in core drilling within thinner stone applications like granite, marble, sandstone, and limestone. Elevate your drilling experience with finesse in delicate stone materials.

Pinnacle Performance with Premium Craftsmanship:

Experience unparalleled efficiency with premium-grade core bits that not only deliver swift drilling speed but also extend the product's life. Achieve excellence in performance and longevity.

FAQ

Q: What is the benefit of vacuum brazed protect teeth on these diamond core drill bits for stone?

A: The side protection (vacuum brazed teeth) acts as a reamer. When you are drilling through thick 3cm granite, it cleans the hole wall and reduces friction on the steel barrel. This prevents the bit from binding (sticking) and allows for much easier "undercutting" or tilting the bit to widen a hole slightly if needed. It’s a must-have feature for professional stone fabricators.

Q: Why should I use a crown type diamond core drill bit for stone instead of a traditional segmented bit?

A: Traditional segments can sometimes cause "hammering" or vibration, leading to micro-cracks in fragile granite. Our crown type diamond core drill bits for stone feature a continuous, 360-degree cutting surface. This design ensures a much smoother entry and exit, making it the perfect solution for drilling clean, chip-free faucet holes in luxury granite and marble countertops.

Q: What connections are available for these diamond core drill bits for sale at Johnson Tools?

A: We offer the most popular global standards, including M14 thread for Europe/Asia and 5/8"-11 thread for the North American market. Whether you need diamond core drill bits for sale with a 1/2" gas shank or a standard thread, our range from 6mm to 100mm is compatible with most professional core drilling rigs and angle grinders.

Q: Why should I choose crown type diamond core drill bits for stone over standard segments?

A: Crown type diamond core drill bits for stone provide a continuous cutting edge that ensures a much smoother start and reduces vibration. Unlike split segments, the crown design prevents chipping on the edges of delicate granite or marble countertops, making it the top choice for high-precision kitchen and toilet installations.

Q: Are these laser welded diamond core drill bits for sale durable enough for high-speed dry drilling?

A: Absolutely. While most bits on the market are brazed, our bits (20mm+) are laser welded. This technology provides the strongest bond between the crown and the steel body, allowing you to use these diamond core drill bits for sale in dry conditions without fear of segment loss due to heat. For pros, this means faster work without the mess of water cooling on a finished installation.

Q: How do I start a hole with these diamond core drill bits for sale without a pilot drill?

A: Because our diamond core drill bits for stone are designed for high-speed use (M14 or 5/8"-11 threads), the crown segment grips the stone immediately. We recommend starting at a 45-degree angle to create a small groove, then slowly bringing the drill to 90 degrees. The high diamond concentration ensures the bit "bites" into the granite instantly without wandering.