Sandvik launches system for large-hole size drilling

The Pantera DP1600i is the newest member of the Pantera DPi series of intelligent top hammer drill rigs. Photo: Sandvik Mining & Rock Solutions

Sandvik Mining & Rock Solutions introduced Top Hammer XL, an optimized top hammer system for large-hole-size drilling in surface mining.

According to Sandvik, the new drilling system targets large-scale quarry and surface mining operations, offering a faster, more fuel-efficient and more cost-effective way to drill holes 5.5 to 7 in. in diameter.

The components of the system are a new Pantera DP1600i drill rig, a new RD1840C rock drill and new LT90 rock tools – all optimized to work together seamlessly for exceptional drilling results, Sandvik says.

“A key asset of the Top Hammer XL drilling system is that all three main components – the drill rig, rock drill and rock tools – have been reviewed, redesigned and mutually optimized,” says Jukka Siltanen, product line manager of rock drills at Sandvik Mining & Rock Solutions.

Pantera DP1600i drill rig

The Pantera DP1600i is the newest member of the Pantera DPi series of intelligent top hammer drill rigs. It is characterized, Sandvik says, by high-penetration rates and advanced automation options for data-based fleet management and drilling performance optimization.

Designed for large-hole-size drilling, Sandvik says the Pantera DP1600i, with its practical intelligence and support for higher-level automation solutions, is ideally suited for production drilling in large quarries or open-pit mines.

RD1840C rock drill

The new RD1840C rock drill is designed for large-hole drilling with 66-hp drilling power. Its design and well-balanced long piston percussion package are made especially for demanding circumstances. The new layout of pressure accumulators maximizes efficiency and minimizes hose vibrations, Sandvik says.

The long-piston technology generates high-impact energy with optimum pulse form, optimizing performance in large-hole drilling without compromising the rock tools’ service life. The geometry and physical dimensions of the new RD1840C rock drill were optimized for the entire Top Hammer XL drilling system.

LT90 rock tools

According to Sandvik, the LT90 rock tools were developed to match the other components in the Top Hammer XL system. The tools consist of a shank adapter, MF tube rods and drill bits.

“Our patented and optimized LT90 rock tools design increases productivity, improves hole straightness and provides great coupling characteristics and a long service life,” says Fredrik Björk, product manager of top hammer surface tools at Sandvik Mining & Rock Solutions. “All in all, this new shoulder-driven system with a double-pass thread gives our customers a much better drilling experience.

“Combined with Sandvik’s class-leading rock tools services, it will truly help our customers reach new levels in their drilling operations,” Björk adds.

Takeaways

According to Sandvik, the Top Hammer XL system was tested and proven in several field tests by drilling more than 100,000 meters in challenging rock conditions. The test results in the given conditions showed a 50 percent reduction in fuel consumption, a 25 percent reduction in total drilling costs and a 15 percent increase in productivity compared with the DTH (down-the-hole) drilling method, Sandvik says.

“Our aim is to serve our customers with the best solutions for every application and in all conditions in order to maximize their productivity with a strong focus on safety and sustainability,” says Petri Virrankoski, president of surface drilling at Sandvik Mining & Rock Solutions. “We are extremely excited to lead the way in the industry as Top Hammer XL opens up completely new possibilities for our customers to improve their operations.”