Small Hole Drilling Tools

Small hole rock drilling tools are mainly used with hand-held, air-leg, and rail-type pneumatic rock drills for shallow-hole rock drilling, small-diameter blast hole rock drilling in mining, stone quarrying, etc. The main small hole rock drilling tools are tapered drilling tools, integral drill rods, plug hole rods, shank end rods.

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Factors to Consider When Choosing Button Bits for Rock Cutting

When selecting button bits for rock cutting, several key factors should be taken into consideration. These factors include:
- Rock Formation: Understanding the geological composition of the rock formation is crucial for choosing the most suitable button bits. Factors such as hardness, abrasiveness, and brittleness should be evaluated.
- Project Requirements: Consider the specific demands of your project, including required drilling speed, hole diameter, and desired cutting precision.
- Bit Design: The design of button bits varies, and each design has its advantages and limitations. Assess factors such as bit face shape, button arrangement, and flushing holes to determine the most appropriate design for your needs.
- Bit Size and Shape: The size and shape of the button bits should be chosen based on the desired hole diameter and the operational capacity of your drilling equipment.

Types of Button Bits and Their Applications

There are several types of button bits available, each designed for specific rock cutting applications. Understanding their characteristics and applications can help you make an informed choice. Some common types include:
- Tapered Button Bits: These are widely used for general-purpose drilling and are suitable for various rock formations.
- Retractable Button Bits: Designed for deeper drilling and hard rock formations, retractable button bits offer enhanced penetration rates and durability.
- Threaded Button Bits: These bits are popular for their versatility and compatibility with different drilling systems, making them suitable for a wide range of rock types.



Small Hole Rock Drilling Tools Specification
Tapered Drill Bit
Taper7°, 11°, 12°
Head Diameter28mm~48mm
Bit TypeTapered rock bit,Chisel bit(Oblique chipways chisel bit,Flat chipways chisel bit,Oblique-flat chipways chisel bit),Cross-type bit,Short skirt,Long skirt
Tapered Drill Rod
Taper7°, 11°, 12°
Rod DiameterHex22, Hex25
Length400mm~5500mm
Integral Drill Rod
Bit Diameter24mm~40mm
Rod DiameterHex19, Hex22
Shank Length108mm
Effective Length400mm~6400mm


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