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7 7/8 inch rubber sealing steel tricone bit

BasicalParameter

Bit Size

7 7/8"(200MM)

IADC Code

127

Tooth Type

Steel /Milled Tooth

Bearing Type

Elastomer Sealed Bearing

Connection

4 1/2"API reg pin

Rotary Speed(rpm)

180~80

Weight on Bit(KN/MM)

Formation

low compressive strength,high drill-ability and soft formation,like shale,clay,salt rock and soft limestone,etc.

7 7/8 inch is a regular size in water well drilling, it is working well with small capacity drilling rigs and widely used in the world.

Steel tooth tricone rock bit is also named milled tooth tricone rock bit could drill soft mudstone, even soft limestone, the cones are hard faced by tungsten carbide, the bearing is journal and locked by ball, high grade elastomer(rubber)-HNBR O-ring sealed bearing, grease compensating system lubricate the bearing , the working life is very long.

Application

Well Drilling Water Well Drilling



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