6 1/2″ DHV537GT

Specifications

Size: 6 1/2″ (165.1 mm)
IADC: 537
Bearing and Seal: Journal Bearing / Composite seal
No. of Rows: 4-4-3
Inner Row: Chisel / 65 pcs
Gauge Row: Wedge / 43 pcs
Trimming Row: Wedge / 5 pcs
Bevel Row: Flat / 38 pcs
Pin Connection: 3 1/2 REG
Bit Weight (KG): 21.0
Weight on Bit (KN/mm): 0.40 ~ 1.05
ROP (rpm): 40 ~ 110

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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.
– Adopting a new type of flat sealed bearing structure, which increases the stability of the sealed structure and greatly prolongs the working life of the bearing.
– The oil storage system can balance the pressure difference inside and outside the bearing, and provide good lubrication guarantee for the bearing system.
– T feature, there is a trimming row between the gauge row and bevel row to protect the cones and trim the well wall.