If you’re using a rock drill with a down-the-hole (DTH) hammer, you know that the shock sub is a crucial component in your drilling setup. This small but mighty piece of equipment minimizes backforce while drilling, ensuring that your drill head operates efficiently and stays in good condition. However, like all equipment, shock subs require regular maintenance to continue performing at their best. Here’s what you need to know about maintaining your shock sub to maximize its effectiveness and lifespan.

When to Schedule Maintenance

The manufacturer’s recommendation encourages performing maintenance on your shock sub every 6 months or after 500 hours of use, whichever comes first. Due to the nature and function of the shock sub, there are no outward signs when the internal seals begin to wear out, however, sticking to this schedule ensures that your shock sub stays in top shape, effectively minimizing the shock and vibration transmitted to the drill head and other components during drilling operations.

Why Regular Maintenance is Crucial

Although there may be no outward signs indicating that maintenance is needed, the internal components of your shock sub, particularly the seals, are subject to wear and tear over time. As these seals wear down, the shock sub becomes less effective at absorbing vibrations and minimizing backforce. This can lead to:

Reduced Performance: A shock sub that isn’t functioning optimally can cause increased vibration and impact on the drill head, reducing drilling efficiency.
Potential Damage: Operating when your shock sub is not at peak performance increases wear on your drill head and other components, leading to costly repairs and downtime.

What Happens During Maintenance?

During the recommended maintenance, the focus is primarily on replacing the seals within the shock sub. These seals are critical in ensuring that the shock sub can perform its function of absorbing force during drilling. The maintenance process typically involves:

Disassembling the Shock Sub: This allows for a thorough inspection of all components, ensuring there is no hidden damage or wear.
Inspecting Seals and Components: The seals are checked for signs of wear, cracks, or damage. If necessary, they are replaced to restore the shock sub’s ability to minimize vibrations.
Reassembling and Testing: After the seals are replaced, the shock sub is reassembled and tested to ensure it functions correctly.

Benefits of Regular Maintenance

Extended Equipment Life: By regularly maintaining your shock sub, you ensure that your drill head and other components are protected from unnecessary wear and damage.
Reduced Downtime and Costs: Like an oil change in your car, preventive maintenance reduces the likelihood of unexpected breakdowns, helping you avoid more costly repairs and downtime.
Optimal Drilling Performance: A well-maintained shock sub ensures smooth and efficient drilling, improving productivity and reducing operator fatigue.

Conclusion

Maintaining your rock drill shock sub every 6 months or 500 hours is a small investment of time and resources that pay off in the long run. Not only does it help keep your drilling equipment in optimal condition, but it also protects your investment by preventing costly repairs and downtime. If it’s been a while since your last shock sub maintenance, now is the time to schedule it. Preserve the health of your shock sub and keep your drilling operations running smoothly!

For more information or to place an order for your sock sub maintenance kit, contact our sales team today! Your equipment deserves the best care—let us help you keep it in top shape.

4 Things to Consider when Selecting the Compressor to Run Your Down The Hole Hammer

1) Hammer Size and Specs

The below specifications outline the requirements for the most common Down the Hole hammer options offered at WORD Rock Drills. Each of these hammers require a 150 PSI minimum for optimum output. Increasing the CFM and corresponding PSI will increase the capacity of your hammer for the best drilling capabilities.

*Above reference chart specific to DK hammers purchased through WORD Rock Drills. Please verify the PSI and CFM requirements of your hammer make/model before moving forward with a compressor rental or purchase.

2) Production Requirements

Compressor size has a significant impact on the efficiency of your Down The Hole hammer. Finding a balance between efficiency and compressor size can be a thin line and depends heavily on the priorities of the project. For example, if time and speed are a top concern, then investing in a stronger compressor might cost more to run but it will help you move through holes quicker. Alternatively, if you are looking for a more budget-friendly solution, smaller compressors are less expensive to rent or own and do not require as much fuel. Therefore, you might choose to run the minimum size compressor for your hammer in order to save on cost. In most cases, increasing the size of your compressor to achieve the higher end of the PSI range for the hammer can lead to a 40% or more increase in drilling capacity.

3) Altitude

A key variable in the selection of a compressor to run the hammer on your machine is the altitude of your project site. Due to the thinner air at higher altitudes, compressor productivity and capacity can be impacted. This is important to consider because lower compressor output will change the behavior of your Down The Hole hammer and could cause the hammer to cease function altogether. A good rule of thumb to prevent this variable from causing problems on your job site is to always check the compressor specs at altitudes over 8,000ft. The specs for the compressor should outline functioning PSI at various altitudes and help you to determine if the PSI is adequate for the hammer you are running.

4) Availability

It is very common for customers to rent their compressors. Considering the price of compressors, maintenance, and transportation, rental just makes more sense than owning the machine outright. However, renting adds another layer of complexity when it comes to determining what compressor to acquire from one job site to the next and the availability of the compressor you need. When it comes down to it, the main consideration for any compressor should be around the PSI output and the specs of the hammer.

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Essential Maintenance for Your Rock Drill Shock Sub