11 5/8″ SHA517GT


Size: 11 5/8″ (295.28 mm)
IADC: 517
Bearing and Seal: Journal Bearing / O-Ring rubber seal
No. of Rows: 4-4-4
Inner Row: Chisel / 86 pcs
Gauge Row: Wedge / 48 pcs
Trimming Row: Wedge / 31 pcs
Bevel Row: Flat / 48 pcs
Pin Connection: 6 5/8 REG
Bit Weight (KG): 88.0
Weight on Bit (KN/mm): 0.35 ~ 1.05
ROP (rpm): 50 ~ 120



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– With high-strength and high-wear-resistance carbide inserts which are advanced in strength and wear-resistance.
– With new journal bearing structure which greatly prolongs the service life of the bearing, and has the ability to withstand high drilling pressure and adapt to high rotational speed.
– Given the performance of the new type of fluorinated rubber sealing ring has been improved, it is more suitable for the working environment and operating parameters of tricone bits.
– The new sealing structure makes the sealing performance match the bearing, thus greatly improving the service life of the bit.
– T feature, a protection carbide inserts row is added between the outer rows and cone back rows for the purpose of cone protection and well wall dressing.