Most raise boring applications begin with the drilling of a pilot hole. The general length of a pilot hole varies from 30 – 1000 meters, with standard drill pipes of 1.5 meter length. The time and cost involved in pulling the pipes
out from a deep pilot hole is significant and the service life of pilot bits is therefore crucial when it comes to keeping down cost and time for any raise boring project.
One of the main reasons for changing bits in the hole is gage wear. Consequently, in order to extend the service life of the pilot bits, a lot of the development work Sandvik has made on the new bit design has focused on
improving gage protection. The new Sandvik RR880 premium pilot bits provide both durability and hole straightness and up to 35% longer bit life than its predecessor, substantially reducing the time and cost for changing tools.
“With the new Sandvik RR880 pilot bits, you can drill longer between bit changes. Fewer bit changes means shorter project times and increased profit at the end of the day”, says Göran Strand, Product Line Manager,
Sandvik Mining.
As a leading supplier to the mining industry, Sandvik’s full offering of rock tools delivers the best combination for all for raise boring and blind boring up/down, and for both vertical and horizontal drilling. The system features a wide range of reaming heads in a number of sizes and types, suitable for any raise boring or reaming applications. Highly trained, expert engineers from Sandvik are equipped to provide the right parts and service
for safe operation, low operating costs and long service life.
Sandviken, 13 January 2016
For more information, contact: Patrik Johansson, Product Marketing Specialist Rock Tools, Sandvik Mining, tel: +46 70 616 27 26, email: [email protected]
—————————————————————————————————————————-
Sandvik Group
Sandvik is a high-tech and global engineering group offering advanced products and services that enhance customer productivity, profitability and safety. We have world – leading positions in selected areas – tools for
metal cutting, equipment and tools for the mining and construction industries, stainless materials, special alloys, metallic and ceramic resistance materials as well as process systems. In 2014 the Group had about 47,000
employees and representation in approximately 130 countries, with sales of about 89,000 million SEK.
Sandvik Mining
Sandvik Mining is a business area within the Sandvik Group and a leading global supplier of equipment and tools, service and technical solutions for the mining industry. The offering covers rock drilling, rock cutting, rock crushing, loading and hauling and materials handling. In 2014 sales were about 27,000 million SEK, with approximately 12,000 employees.