Engineering and Mining Journal - Whether the market is copper, gold, nickel, iron ore, lead/zinc, PGM, diamonds or other commodities, E&MJ takes the lead in projecting trends, following development and reporting on the most efficient operating pr
Issue link: https://emj.epubxp.com/i/131325
E Q U I P M E N T G A L L E RY built-in firewall, and secure protocols such as HTTPS and SSH to encrypt data. www.bb-elec.com New Bit Lines Have Advanced Design Features power input. Four main security features protect networked devices: basic NAT (Network Address Translation), VPN (Virtual Private Network) tunneling, a Varel International has launched the new Raider series PDC drill bits, along with new bit technology for horizontal directional drilling (HDD) applications. According to the company, the new Raider bits are pur- pose-built for drilling to total depth through interbedded soft and hard formations of transition zones. By incorporating design refinements that create a new, more balanced profile with greater stability, the series provides a solution to overcome the ROP and durability challenges associated with these applications. Varel also said its Target HDD technology encompasses a new series of roller cone bits equipped with EdgeGuard shirttail enhancement technology, as well as Full Coverage (FC) cutters for use on hole openers and reamers in HDD operations. The roller bits, available in both open and sealed bearing configurations, are equipped with patented High Energy Tumbled inserts. The series' FC cutters are sealed bearing and compensated components with advanced cutting structures for outstanding performance in hole opener and reamer applications. All FC cutters feature Varel's labyrinth seal ring protection for extended life. www.varelintl.com Clutch Brake Suitable for Mining Applications Force Control Industries has introduced the Size 30 Posidyne clutch brake, featuring its oil shear technology that can be operated as a clutch only for applications such as pumps or fans or as a clutch brake for cycling or indexing applications. The clutch brake, according to the company, accelerates or decelerates high inertia loads without wear on friction discs. The Size 30, which provides smooth acceleration or deceleration through the oil shear technology, is claimed to be ideal for mining applica154 E&MJ; • APRIL 2013 www.e-mj.com