3 Inches DTH DHD3.5 90mm Drilling Bit For Down The Hole And Water Well Drilling

3 inches DTH DHD3.5 90mm drilling bit for down the hole and water well drilling

DTH Drill Bit

DTH bit is the tool cutting rocks, and subject to severe stress from the striking piston as well as from the abrasive cuttings passing the bit at high velocity. When selecting the right bit for optimum performance you have to balance penetration against bit life. On occasion you can successfully sacrifice bit life for penetration, remember the rule of thumb that states that a 10% increase in penetration covers at least a 20% loss in bit life.

​We can design and manufacture the personalized products to meet your specical apllication, such as changing the tungsten carbide insert profile (spherical, ballistic, etc.), face profile (flat face, concave, convex, etc.), and flushing holes.

Hammer size: 2”~3.5” 4”~8” 10”~32”

Hammer Shank Style: BR, AHD, Cop, Mission...

Mincon, Numa, QL, TD...

SD, DHD, XL, ACD, Mach...

Face Design: Flat, Concave, Convex

DHD3.5 DTH Drill Bit Specification

DHD3.5
Ballistic Convex Face
Bit Diameter (mm)	Bit Diameter (inch)	Buttons (mm)		Flushing holes	Weight (kg)	Part number
		Front	Gauge
90	3 1/2	4*12,2*12	8*12	2	4.5	4148301219
95	3 3/4	4*12,2*12	8*12	2	4.8	4148301220
100	3 7/8	4*13,2*13	8*13	2	5	4148301221
105	4 1/8	4*14,2*14	8*14	2	5.5	4148301222

DHD3.5
Spherical Flat Face
Bit Diameter (mm)	Bit Diameter (inch)	Buttons (mm)		Flushing holes	Weight (kg)	Part number
		Front	Gauge
90	3 1/2	6*12	8*12	2	4.5	4148301223
95	3 3/4	6*12	8*12	2	4.8	4148301224
100	3 7/8	6*13	8*13	2	5	4148301225
105	4 1/8	6*14	8*14	2	5.5	4148301226

Button bit and Insert types
Spherical Button Characteristics:
1. Universal button
2. Good wear resistance
3. Best suited for hard ground
4. 27000-48000PSI(180 to 320Mpa)
5. Suited for abrasive to very abrasive drilling conditions

Ballistic Button Characteristics:
1. Fast Penetration
2. Best suited for soft rock
3. 10000-20000PSI(70 to 140Mpa)
4. Suited for non-abrasive drilling conditions

Conical Button Characteristics:

1. Fast Penetration
2. Best suited for smaller diameter bits

3.Suited for non-abrasive drilling conditions

About US

KSQ Technologies (Beijing) Co. Ltd. is a diversified enterprise based in Beijing, China, offering a portfolio of products that help contribute to a better bottom line and increase workplace safety for the construction and mining industries.

KSQ Technologies (Beijing) Co. Ltd. has significant experience and know-how in the supply of materials, components, finished goods, specially designed/engineered equipment, and services from China. The company caters to medium to large scale clients who are doing projects and capital expansion, as well as to firms who require support with consumable products, maintenance, and repair operations. Our operations are based on the unique expertise of our people and knowledge with customer processes.

MIROC® Rock Drilling and Ground Support Tools include:

Integral Rods
Plug Hole Rods
Tapered Drilling Tools
Extension Drilling Tools
Drifting and Tunneling Tools
Reaming Tools
Shank Rods
Shank Adapters (Striking Bars)
Down-the-hole (DTH) Bits
Down-the-hole (DTH) Hammers

KSQ Technologies (Beijing) Co. Ltd. provides exceptional technical know-how in development, prodcution, and application. The company has adopted advanced manafacturing processes to ensure high quality steels and tungsten carbide inserts for its rock drilling accessories. Its personnel understand clients' drilling needs, and have the service skills to recommend the right drilling tools for the job. Its experienced product developers can also create custom tools. Furthermore, the company's development team introduces innovative products each year - tools that are rigorously tested in the field and proven to perform beyound industry expectations.

The MIROC® Rock Drilling Tools product line by KSQ Technologies (Beijing) Co.Ltd. is the result of years of advanced engineering, precision manufacturing, and dedication to the use of high-quality materials.

MIROC® Rock Drilling Tools are used by many drilling professionals related to mining, construction, tunneling, and quarrying projects around the globe.