9 5/8" FSA517GT Tricone Drill Bit / Three Cone Bit With Trimming Cutter

9 5/8" FSA517G, TCI Bit , Sealed Friction Bearing , Three Cone Roller Bit , Tricone Drill Bit

RECOMMENDED DRILLING PARAMETERS FOR APPLICATION

The above chart represents commonly available sizes and types, we do produce other sizes and types of rock bits which do not appear on this list. Please contact us for more information.

ROLLER CONE BIT CONE DESIGN

In some formations, it is advantageous to design the cones and their configuration so that they do not rotate evenly but that they slip during rotation. This Cone slippage, as it is called, allows a rock bit to drill using a scraping action, as well as the normal grinding or crushing action.

Cone slippage can be designed into the bit in two ways. Since cones have two profiles: the inner and the outer cone profile, a cone removed from the bit and placed on a horizontal surface can take up two positions . It may either roll about the heel cone or the nose cone. When the cone is mounted on a journal it is forced to rotate around the centre of the bit. This “unnatural” turning motion forces the inner cone to scrape and the outer cone to gouge. Gouging and scraping help to break up the rock in a soft formation but are not so effective in harder formations, where teeth wear is excessive.

Hejian City Feilong Retop Rock Bit Manufacture Co., Ltd. is established in 1992 and located in Hebei Province, China. Integrated with Beijing Feilong International Trade Co., Ltd. and Beijing Superior Drilling Equipment Co., Ltd. , the company has involved into a comprehensive enterprise integrating production, R&D and distribution of tricone bits, PDC bits, trenchless and rotary drilling tools.

The company serves the customers in oil & gas drilling, mining, exploration, HDD drilling and rotary drilling with covering a complete product line.

The company covers an area of 36,000 square meter and has more than 200 employees, including more than 100 technicians. The company has equipped with contemporary advanced processing equipment of processing and detecting and testing instruments. The company has obtained the certification of the quality system: ISO 9001, ISO 14001, OHSAS 18001 and mostly important API 7-1.

The company’s annual production of various drilling tools is over 10,000 sets, which exported to over 20 countries and regions. We, FeiLong ReTop ( FLRT ) are willing to cooperate with friends at home and abroad to make joint development and contribute to global energy development and urban infrastructure development.