Tag Archives: rotary drills

Sandvik completes rotary drill bit offering with ‘cutting-edge’ RR340

Sandvik Mining and Rock Solutions is introducing the new Sandvik RR340 single seal roller bearing rotary drill bit in an effort to, it says, boost service life and lower drilling costs.

Sandvik’s rotary bit offering has consisted of the standard air bearing bit Sandvik RR240 and the ultra-premium Charger™ RR440 and RR450 bits. The Sandvik RR340, a premium single seal roller bearing bit, now completes the company’s rotary offering. Its single seal roller bearing technology and optional PowerCarbide® inserts ensure reliable and efficient drilling with 45% longer service life compared with standard products, the company says. More bearing hours mean fewer bit changes and an added sustainability benefit, with reduced risk exposure and environmental impact from production and shipping, it added.

“[The] Sandvik RR340 rounds out our offering within rotary bits, ensuring that customers in all segments and applications can find the ideal choice for their operation,” Sandra Arman, Product Manager Rotary Bits at Sandvik Mining and Rock Solutions’ Rock Tools Division, said. “Field tests have demonstrated significant cost savings potential. Compared to equivalent standard air bearing bits, a typical surface mine drilling 1.5 million meters per year could expect to save more than $800,000 annually with Sandvik RR340. This is truly the single seal effect.”

Some of the technology that provides the Sandvik RR340 single seal bit with its longevity includes an abrasion-resistant radial seal. Its shape delivers extended bearing hours and greater reliability compared with conventional seals, according to the company. In addition, the Sandvik RR340 features a low friction bearing, which minimises friction and heat generation, which can otherwise cause wear and reduce efficiency.

“There is significant research and development that lies beneath the surface of Sandvik RR340, with several cutting-edge design and material innovations,” Arman said.

The Sandvik RR340 is currently available in sizes ranging from 6.75 in (171 mm) to 12.25 in (311 mm).

Caterpillar, Barloworld to talk up mining equipment and power solutions at Indaba

Caterpillar and its southern Africa dealer, Barloworld Equipment, are set to present a broad range of machines, technology and support services at next week’s Mining Indaba, in Cape Town, South Africa.

The Caterpillar exhibit at Indaba, running from February 3-6, will feature digital displays of electric power generation systems, surface and underground mining equipment, and Cat MineStar™ technology capabilities – ranging from vehicle safety systems, such as operator fatigue monitoring, to production systems using teleremote, semi-autonomous and autonomous machine operation.

Caterpillar has recently introduced several new underground hard-rock mining vehicles in Africa. The new R1700 underground LHD brings the latest technology for semi-autonomous and fully autonomous operation to the region. The loader also delivers more than 30% greater fuel efficiency, 65% more lift and tilt force, and 15 t capacity – 20% more than its predecessor, yet in the same dimensional envelope, according to Cat.

Using MineStar Command for underground, the new R1700 (pictured) can be operated from a remote location to keep miners away from potential hazards, Cat says. “The system also boosts utilisation by allowing immediate entry after blasting and by reducing shift change time to nearly zero.”

In addition to the R1700, Caterpillar has introduced several LHDs and underground trucks equipped with EU Stage V engines and emission controls. “Reducing emissions helps miners improve the underground working environment,” it said. On top of this, and with the goal of zero underground emissions in mind, Caterpillar is continuing to develop the battery-powered R1700 XE.

Erik Elsmark, Region Manager for the Caterpillar Underground Mining Division, said: “Caterpillar and Cat dealers are supporting the whole African continent and all types of underground mining applications – big and small mines and all minerals.

“In the past several months we have delivered machines covering our full product range, demonstrating that we are well positioned to meet our customers’ needs.

“Starting with our AD22 underground articulated truck to our R2900 LHD, our equipment delivers exactly the size class and power needed for the application. With distribution centres in Southern Africa and Middle East and our dealer network in all countries of the African continent, we are able to achieve world-class service.”

The extensive line of Cat surface mining machines and technologies will also be a talking point at the event.

Caterpillar has recently expanded its line of electric drive mining trucks in the past year to include the 794 AC, 796 AC and 798 AC. Recently, a South Africa mining operation took delivery of several 794 AC trucks (pictured above), which have 291 t capacity, the company said. “This model has already proven its high productivity and superior speed on grade in a wide variety of applications,” Cat remarked.

In the Cat drill line, the latest model is the MD6200 rotary blasthole drill, designed as a production drill with the flexibility to do pre-split drilling – all in a package that Caterpillar says is its most transportable rotary drill yet. The MD6200 is designed to perform rotary or DTH drilling in single-pass or multi-pass modes and can drill holes of 127 to 200 mm in diameter, according to Cat.

Cat MineStar Command now includes systems for autonomous operation of mining trucks, semi-autonomous operation of dozers, and semi-autonomous as well as autonomous rotary drills. These systems enhance safety, boost production and lower cost per tonne, Cat says.

Mine power experts will also be on call at the show, with the representatives keen to talk about the ability for Cat generators to deliver reliable, continuous power, temporary power, or a combined heat and power solution. “The Cat team customises and installs systems for every phase of mining,” it said.

Caterpillar says it offers the industry’s widest range of diesel, gas and dual fuel generator sets; automatic transfer switches, and switchgear for seamless integration. Additionally, it offers microgrids, fully-integrated power systems that utilise solar panels, energy storage and monitoring and control systems in conjunction with any configuration of Cat gen sets.