Diamond Diamond Core Drill Bit – Concrete Core Drill

Johnson Tools OD25-700mm Wet Diamond Hole Saw Drilling Bit | For Concrete & Reinforced Concrete

In demanding civil engineering projects such as bridge construction, commercial plumbing, and major structural modifications, the ability to drill swiftly, safely, and accurately dictates the project’s timeline. Execute heavy-duty engineering projects with confidence using the Johnson Tools Wet Diamond Hole Saw Drilling Bit. Covering an extensive diameter range from 25mm up to 700mm, these bits are engineered for professional coring in Reinforced Concrete, Hard Stone, and Masonry. Whether for installing small plumbing pipes or large ventilation shafts, our diamond hole saws deliver exceptional penetration speed, operator safety, and enduring longevity.

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Diameter(mm)	Thickness(mm)	Length (mm)	Connector	Teeth No
12mm	1.5	450	1-1/4″	1
14mm	1.5	450	1-1/4″	1
16mm	1.5	450	1-1/4″	1
18mm	1.5	450	1-1/4″	1
20mm	1.5	450	1-1/4″	1
22mm	2.0	450	1-1/4″	2
25mm	2.0	450	1-1/4″	3
28mm	2.0	450	1-1/4″	4
32mm	2.0	450	1-1/4″	4
36mm	2.0	450	1-1/4″	4
38mm	2.0	450	1-1/4″	4
42mm	2.0	450	1-1/4″	4
52mm	2.0	450	1-1/4″	5
57mm	2.0	450	1-1/4″	5
62mm	2.0	450	1-1/4″	6
67mm	2.0	450	1-1/4″	6
72mm	2.0	450	1-1/4″	7
77mm	2.0	450	1-1/4″	7
82mm	2.0	450	1-1/4″	8
92mm	2.0	450	1-1/4″	8
102mm	2.0	450	1-1/4″	9
107mm	2.0	450	1-1/4″	9
112mm	2.0	450	1-1/4″	10
117mm	2.0	450	1-1/4″	10
122mm	2.0	450	1-1/4″	10
127mm	2.0	450	1-1/4″	10
132mm	2.0	450	1-1/4″	11
142mm	2.0	450	1-1/4″	11
152mm	2.0	450	1-1/4″	12
162mm	2.0	450	1-1/4″	12
172mm	2.0	450	1-1/4″	13
182mm	2.0	450	1-1/4″	13
200mm	2.0	450	1-1/4″	15
225mm	2.5	450	1-1/4″	16
230mm	2.5	450	1-1/4″	16
250mm	2.5	450	1-1/4″	17
276mm	3.5	450	1-1/4″	19
300mm	3.0	450	1-1/4″	21
350mm	3.0	450	1-1/4″	23
400mm	3.0	450	1-1/4″	25
450mm	3.0	450	1-1/4″	28
500mm	3.0	450	1-1/4″	32
550mm	3.0	450	1-1/4″	36
600mm	3.0	450	1-1/4″	40

Laser Welded Technology for Maximum Safety
During high-RPM coring operations, segment loss can cause severe equipment damage and serious safety hazards. This entire series utilizes state-of-the-art Laser Welding technology to fuse the diamond segments to the steel barrel at a molecular level. This guarantees unparalleled torque resistance and structural stability when cutting through dense rebar networks and hard aggregates.

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Tailored Segments for Optimized Efficiency
To match the specific aggregate hardness of different regional markets and varying drill motor powers, we offer specialized segment configurations:
- Normal Segment: Provides a stable, well-balanced drilling performance.
- Turbo Segment: Engineered for accelerated cutting speeds and superior slurry removal.
- Mesh Turbo Segment: Delivers ultra-fast drilling while maintaining exceptionally clean, chip-free hole walls.
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