Kovai’s DTH (Down-the-Hole) hammers are engineered to deliver exceptional drilling performance across a wide range of applications while optimizing air usage to reduce energy consumption.
Hammer Length (mm)
1056.2 to 1094.5
Piston weight (kg)
18.4 kg
Wrench Size
3.543
DTH Hammers
Our advanced DTH hammers are engineered to deliver maximum drilling speed and impact power in tough rock formations. Featuring a long stroke piston, durable internal components, and a simplified design, they provide reliable performance, easy maintenance, and cost-effective drilling solutions.
14 Components
DTH Hammers
Our advanced DTH hammers are engineered to deliver maximum drilling speed and impact power in tough rock formations.
| Hammer Name | 6″ Mission | 6″ QL | 6.5″ XL Mission CBH | 6.5″ XL QL CBH |
|---|---|---|---|---|
| Hammer Length | 1056.2 mm | 1094.5 mm | 1094.5 mm | 1056.2 mm |
| Hammer Weight | 83.8 Kg | 85.86 Kg | 94.64 Kg | 92.6 Kg |
| Hammer OD | 143.0 mm | 143.0 mm | 148.0 mm | 148.0 mm |
| Piston Weight | 18.4 kg | 20.0 kg | 20.0 kg | 18.4 kg |
| Wrench Size | 3.543 | 3.543 | 3.543 | 3.543 |
| Top Sub Thread Connection | 3 1/2 API Reg | 3 1/2 API Reg | 3 1/2 API Reg | 3 1/2 API Reg |
| Suitable Shank | M60 | QL60 | QL60 | M60 |
| Min Drill Bit Size | 1056.2 mm | 1094.5 mm | 1094.5 mm | 1056.2 mm |
| Max Drill Bit Size | 143.0 mm | 143.0 mm | 148.0 mm | 148.0 mm |
| Footvalve | NO | NO | YES | YES |
| Catalogue |  Download |
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AIRFLOW GRAPH
Kovai DTH hammers utilize precision-calibrated internal pathways to maximize air expansion and strike energy. Our optimized pneumatic design delivers faster penetration while significantly reducing fuel consumption
DTH Hammers
Our advanced DTH hammers are engineered to deliver maximum drilling speed and impact power in tough rock formations.
Engineered with a precision-ground, long-stroke piston to deliver maximum strike energy. This design ensures faster penetration rates even in the hardest rock formations, significantly reducing your time on-site.
Our advanced internal geometry maximizes air expansion while minimizing consumption. By reducing energy waste, Kovai hammers lower your overall fuel costs and improve compressor efficiency during deep-hole drilling.
Built with a “minimum-part” philosophy to allow for rapid field servicing. The simplified internal structure means fewer points of failure, easier assembly, and significantly reduced downtime for your crew.
Testimonials
Our commitment to engineering excellence has earned the confidence of leading organizations worldwide, built on a foundation of precision manufacturing.
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!!
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!!