11″ DHV517G

Specifications

Size: 11″ (279.4 mm)
IADC: 517
Bearing and Seal: Journal Bearing / Composite seal
No. of Rows: 4-4-4
Inner Row: Chisel / 88pcs
Gauge Row: Wedge / 51 pcs
Bevel Row: Flat / 51 pcs
Pin Connection: 6 5/8 REG
Bit Weight (KG): 78.0
Weight on Bit (KN/mm): 0.35 ~ 1.05
ROP (rpm): 50 ~ 120

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– Adopt high strength and high wear resistance carbide inserts.
– Adopting the Journal bearing structure, it has the ability to withstand medium WOB and adapt to higher ROP.
– Adopt new flat sealing ring, more suitable for the working environment and the operating parameters of rock bit.
– The oil storage system can balance the pressure difference inside and outside the bearing, and provide good lubrication guarantee for the bearing system.