Designed for hard rock environments, Kovai DTH hammers provide consistent drilling performance and exceptional durability. Their efficient energy transfer helps improve productivity, reduce operating costs, and maximize output across mining and quarry projects.
Mining & Quarrying
Kovai’s DTH Hammer designed for hard rock formations where penetration rate, hole accuracy, and equipment uptime directly impact productivity, the CBH-Series provides faster drilling, straighter holes, reduced air losses, and extended service life. Optimized airflow pathways improve energy efficiency and hammer response, while the robust mechanical design withstands severe cyclic loading and abrasive environments. From large-scale open-pit mining operations to aggregate quarries and production blast hole programs, Kovai hammers deliver the performance, efficiency, and dependability that modern drilling contractors demand
Higher Penetration Rates
Reliable Performance
Lower Cost Per Meter
PRODUCTS
| Hammer | 5″ Series | 6″ Series |
| Hole Range | 133mm – 165m | 158mm – 203m |
| Shank | Mission & QL | Mission & QL |
| Footvalve | Optional | No |
| Thread Types | API Reg, BECO & Cubex | |
Explore our complete range of DTH drilling solutions, including XL CBH hammers for mining, drill bits, drill pipes, and accessories. Custom configurations are available to suit your operational requirements
Testimonials
The Kovai 6" class hammer performs excellently at all depths. In my 36 years of hard rock drilling experience, I feel it is quite possibly the fastest penetrating hammer on the market today!!
In the hard, abrasive iron ore at Mont-Wright Mine, the Kovai DTH hammer delivers excellent penetration with outstanding reliability. It handles tough conditions with ease and keeps our drilling efficient and consistent.
We tested Kovai DTH hammers against major brands in multiple quarries. They delivered strong penetration, reliable performance, and excellent service life in tough rock conditions. Based on their overall performance and durability, we adopted 5-inch and 6-inch Kovai hammers for our South Carolina drilling operations.
We recently had a multiwater well project near Pinnacles National Park, east of Soledad, CA. The lithology consisted of upper sandstone and decomposed granite followed by hard, weathered granitic rock. Prior to the Kovai hammer with 7.5" bit, we were averaging 140' per day with 6" button bits and drill collars and various other hammers. Once we switched to the Kovai hammer, our production increased to 120' per hour average. With auxiliary air, we were able to reach 660' on multiple holes that were producing in excess of 60 gallons per minute. We look forward to Kovai launching larger hammers and we appreciate their local distributorship and assistance
We've been using Kovai's 8-inch DTH hammer for the past two years, and it's performed very well in our water well drilling operations. It has delivered reliable performance while saving us money compared to some of the bigger brands. I'd definitely recommend giving Kovai a try if you're looking for quality and value