17 1/2″ SGA625GY


Size: 17 1/2″ (444.5 mm)
IADC: 625
Bearing and Seal: Roller Bearing / O-Ring rubber seal
No. of Rows: 6-6-5
Inner Row: Conical / 228 pcs
Gauge Row: Ovoid / 82 pcs
Bevel Row: Flat / 82 pcs
Pin Connection: 7 5/8 REG
Bit Weight (KG): 223.0
Weight on Bit (KN/mm): 0.40 ~ 0.80
ROP (rpm): 80 ~ 160



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– High-strength and wear-resistant carbide teeth are used,and the number of tooth rows,number of teeth,height of exposed teeth and tooth shape are optimized to improve the efficiency and life of the cutting structure of the drill bit.
– The new roller bearing structure is adopted, which prolongs the working life of the bearing, and has the ability to withstand medium bit pressure and adapt to higher speed.
– The O-ring seal is made of wear-resistant and high-temperature-resistant fluorinated high-saturated nitrile rubber, which effectively improves the reliability of the bearing seal and thus increases the service life of the drill bit.
– The oil storage system can balance the pressure difference inside and outside the bearing, and provide good lubrication guarantee for the bearing system. Y feature, the main cutting teeth of the cone are conical teeth, which have strong fracture resistance and formation penetration ability, and are suitable for drilling in hard and brittle formations and gravel interlayers.