When deploying a DTH hammer for drilling operations, its performance depends not only on the tool’s design but also on how well the shank adapter and other parts are maintained and operated in the field. Proper use and preventive care help avoid unnecessary downtime, reduce wear on consumables, and ensure steady drilling progress. Whether you’re drilling water wells, mineral exploration holes, or construction bores, adopting targeted practices enhances efficiency and tool longevity.

1. Conduct Routine Pre‑Drilling Inspections

Before starting work each day, walk through a short checklist:

Visual Check of Threaded Connections: Look closely at the thread on the shank adapter and drill string. Worn or uneven threads can cause loose fitment and inefficient energy transfer during drilling.

End Face and Shank Condition: Examine the striking face and shank for cracks, deformation, or corrosion. Even minor surface damage can affect impact delivery between the hammer and adapter.

Air and Lubrication Systems: Make sure your air supply and lubrication systems are functioning properly before you hit rock. Insufficient air pressure or poor lubrication leads to performance drops and internal wear.

Good inspection habits help you catch early signs of trouble before they escalate into major failures.

2. Maintain Proper Lubrication Practices

Lubrication plays a central role in maintaining smooth drilling:

Apply Rock Drill Oil: Feed a consistent flow of rock drill oil through the lubrication point. This reduces friction inside the hammer and at the shank adapter connection, minimizing wear.

Avoid Under‑ or Over‑Lubrication: Too little oil accelerates internal wear, while too much oil can attract dirt and clog moving parts. Monitor consumption and adjust according to manufacturer guidelines.

Inspect O‑Rings and Seals: Damaged seals allow air leaks and reduce hammer impact strength. Replace worn seals to maintain stable performance.

Ensuring consistent lubrication helps protect both the hammer internals and shank adapter threads, extending part life.

3. Assemble and Torque Connections Correctly

A secure, correctly torqued connection between your drill string and shank adapter is essential:

Clean Threads Before Assembly: Remove dust, debris, or rust from threads before connecting. Clean threads engage more securely and reduce the chance of galling or premature wear.

Use Proper Torque Tools: Tighten connections according to recommended torque values. Loose adapters cause inefficient energy transfer, while over‑torquing can deform threads.

Check Alignment: At assembly, make sure the shank adapter and drill string are aligned concentrically. Misalignment causes uneven wear, vibration, and reduced drilling efficiency.

Following these assembly tips ensures the drill string functions as a unified system rather than a collection of loosely‑connected parts.

4. Monitor Drilling Parameters During Operation

How you operate the drill greatly affects tool longevity:

Adjust Feed Pressure: Keep feed force within recommended ranges — too little and the bit won’t engage properly; too much and the shank adapter and drill bits wear faster.

Control Rotation Speed: Rotation affects bit life and hammer energy delivery. In general, avoid excessive RPMs that cause scraping rather than crushing.

Flush Cuttings Efficiently: Make sure flushing air or water carries rock cuttings out of the hole. Clogged cuttings raise temperature and stress on the hammer and adapter.

Good operational habits reduce downtime and improve penetration rates.

At Kaiqiu Drilling Tools Co., Ltd., we support operators with quality tools and practical guidance to help you maximize productivity and minimize unplanned maintenance. By applying these operator tips each day, you’ll maintain smoother drilling operations and reduce long‑term operational costs.