The PMK series down-the-hole hammers are the ideal solution for drilling contractors and operators seeking maximum productivity, reliability and value for money. The PMK range has been on the global market for over 10 years, undergoing continuous improvements over the years to meet the diverse needs of customers.
The PMK series can be used for all drilling applications, such as water well drilling, quarry drilling, tunnel construction, geothermal drilling, construction drilling, piling and micropiling.
Available with Ingersoll Rand – Atlas Copco – Epiroc – Sandvik – Numa and Halco drill shanks.











The new OCMA DrillTech GT series of down-the-hole hammers is designed to achieve higher drilling performance in some of the most challenging applications compared to other hammers on the market.
Its impressive performance ensures that any drilling project is completed at a lower cost per meter drilled. The GT series is built and designed for all drilling applications, such as water well drilling, well drilling/quarry drilling, geothermal drilling, exploration drilling, and construction drilling.
The GT series uses drill bits without a plastic tube or foot valve—“Tubeless Technology”—and the sturdy shank with 12 grooves reduces wear when drilling in broken or softer ground.
The PMK series stabilised hammers offer excellent drilling performance and extreme precision for straight holes. The stabiliser is a single piece integrated into the hammer cylinder, with no welds, and is therefore perfectly concentric with the hammer. This feature makes the PMK Stabilised Series unique on the global market and ideal for customers seeking perfection in their work.
The three stabilising wings are coated with tungsten carbide buttons to prevent wear. The fields of application where they are required include water well drilling, geothermal drilling, horizontal drilling and construction.
Available with Ingersoll Rand / Atlas Copco / Epiroc DHD shanks and Sandvik DTH bits.
| Serie | Inches | Drilling Applications |
|---|---|---|
| PMK series | 2" / 3" / 3,5" / 4" / 5" / 6" / 8" / 10" / 12" | Water wells, quarries, tunnel construction, geothermal drilling, construction drilling, piles, and micropiles. |
| Estabilizados | 6" / 8" | Water wells, geothermal drilling, horizontal drilling, and well construction. |
| GT series | 4" / 5" / 6" / 8" | Water wells, quarries, geothermal drilling, exploration, and construction. |