Global Leading Diamond Tool Manufacturer.
Johnson Tools Durable Diamond Segments for Efficient Concrete Core Drilling
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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.
PRODUCT parameter
| Dimensional data | ≤127 | ≥132 |
| Segment Spec.L x T x H | ||
| Normal Type | 22x4x9 | 22x4.5x9 |
| Great Wall Type | 23x4x10 | 23x4.5x10 |
| Corrugated tooth | 23x4x9 | 23x4.5x9 |
| Gear tooth | 23x4x10.5 | 23x4.5x10.5 |
| Dotted tooth | 23x4x10.5 | 23x4.5x10.5 |
| Roof tooth | 23x4x10.5 | 23x4.5x10.5 |
200pcs per plastic box
100pcs per platic bag
core bits segments
core bits segments
Core bits segments.
product usage
Welded for Stability:
Segments are either High-frequency welding onto the core bits tube, ensuring stability and durability during drilling or coring on stone or construction materials.
How to order
Diamond Segments for Core Drill Bits Drilling concrete, and Reinforced Concrete, bricks.
1. Choose your preferred segment type.
2. Specify your quantity requirements.
3. Provide the outer diameter of the drill bits for brazing.
We will calculate the best quotation, including shipping fees, for your final confirmation.
FAQ
Q1: How do I choose the right diamond
segment shape for different concrete types?
A: Choosing
the correct cutter tooth type is essential for balancing speed and
stability.
- Roof Type: Ideal for fast
startup and precise centering.
- Turbo Type: Features side grooves
for rapid debris removal, significantly increasing drilling speed
in hard materials.
- Aero/Net Type: Designed with a
larger surface area for superior heat dissipation, preventing
overheating during continuous heavy-duty drilling.
- Great Wall Type: Provides maximum
structural stability, making it the best choice for drilling
high-reinforced concrete.
Q2: Does Johnson Tools offer segments
for the full size range of 18mm to 600mm?
A: We can
supply diamond segments for core drill bits from 18mm to 600mm. Segment
size, radius, thickness, and height can be customized according to your core
barrel diameter and wall thickness.
.
Q3: What are the advantages of
re-tipping core drills instead of buying new bits?
A:
Re-tipping core drill bits is a cost-effective solution when the steel barrel
is still in good condition. Instead of replacing the whole core bit, users can
replace only the worn diamond segments, helping reduce tool cost and extend the
service life of the core drill.
Main advantages include:
- Cost Saving: Re-tipping can help
reduce replacement cost compared with buying a new complete core drill
bit.
- Performance Adjustment: Different
diamond bond formulas can be selected for hard concrete, abrasive
concrete, reinforced concrete, or other jobsite conditions.
- Longer Tool Utilization: Reusing
the steel barrel helps extend the overall use of the drilling tool and
reduces unnecessary steel waste.
Q4: How do your segments perform when
drilling reinforced concrete with heavy rebar?
A: Q4: How
do your segments perform when drilling reinforced concrete with heavy rebar? A:
Our diamond segments can be customized for reinforced concrete drilling,
including applications where the core bit may encounter rebar. For heavy rebar
conditions, we usually recommend more aggressive segment designs, such as
Sawtooth Type or Dotted Tooth Type, combined with a suitable bond formula.
These designs help improve cutting sharpness, reduce friction, and lower the
risk of segment glazing. However, drilling through dense rebar may reduce
drilling speed and increase segment wear, so the right bond formula and
sufficient cooling are important for stable performance and longer service
life.
Q5: What equipment is needed to weld
these segments onto a core bit barrel?
A: For
professional re-tipping, we recommend high-frequency induction brazing. Proper
silver brazing alloy, flux, surface cleaning, and temperature control are
important for a strong and reliable joint.
If needed, we can also provide basic
technical guidance for brazing diamond segments onto core bit barrels.
Q6: What is the expected lifespan of
Johnson Tools diamond segments?
A: The
lifespan of diamond segments depends on several factors, including machine
power, RPM, water flow, drilling material, rebar content, and operator
technique. Johnson Tools diamond segments are designed to provide a good
balance of drilling speed and service life for concrete and reinforced concrete
applications.
For the best performance, we can recommend
a suitable bond formula according to your drilling condition.
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