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3 617G	4 3/4 517G	6 LYD437G	6 LYD517G
6 LYD537G	4 3/4 437G	4 3/4 537G	6 1/8 437G
6 1/8 537G	6 5/64 437G	6 5/64 517G

1,、Single cone bit has big compacts,higher breaking rock efficiency and ROP,is used in different formations.It can run through hard intercalated formations and soft&hard interlaces.

2,、The single cone bit has excellent gauge protection and up reaming ability by setting active cutting gauge compacts on head body and wear-resistant gauge compacts on cone.

3、Dual-nozzle system of single cone bit improves the cleaning ability of hydraulic system on the cone and bottom hole,expedites upward flow of cuttings and assures higher ROP.

4,、Two seal-courses of the big,small bearing of single cone bit are made from HNBR, assure reliability of the sealing.

5,、Single cone bit is a kind of decelerating bit.Cone rotation speed is lower than bit rotation speed.Therefore it is suitable for drilling condition equipped downhole motor.