Overview

The document provides technical information and specifications for the MDRC 5 Down-The-Hole (DTH) Hammer used in reverse circulation drilling applications. It highlights design principles, advantages, and key components of the hammer, emphasizing its high impact energy, efficient air consumption, and suitability for geological exploration and mining.

Design Principles and Advantages

• Based on high impact energy output and penetration rate for effective rock crushing.
• High impact frequency ensures precise and efficient drilling.
• Low air consumption reduces operational costs.
• Easy access to hammer accessories facilitates maintenance.
• Designed for geological sampling with high-quality core recovery.

Component List

The hammer consists of 30 main parts, each with a specific part number for identification and replacement. Key components include:

• O-Rings (multiple sizes and positions)
• Adaptor Tube
• Hole Ring
• Air Screen
• Top Sub and Bush Drive Sub
• Check Valve and Check Ring
• Spring and Steel Pad Ring
• Air Distribution Seat
• Sample Tube and Tube Seat
• Inner and Outer Cylinders
• Piston
• Chuck Ring, Sleeve Protector, Chuck Sleeves
• Drill Bit

Technical Parameters of MDRC 5 Hammer

Drill Bit Specifications

The document lists various reverse circulation drill bits compatible with the hammer, including ordinary and spherical button designs. Key parameters include diameter, button size, quantity, and weight:

Summary

The MDRC 5 DTH Hammer is a robust and efficient tool designed for reverse circulation drilling with high impact energy and low air consumption. Its modular design with clearly identified parts facilitates maintenance and replacement. The hammer supports a range of drill bit sizes optimized for different drilling conditions, making it suitable for mining and geological exploration applications.