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8 1/2'' 215.9mm Matrix Body PDC Drilling Rock Bit

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Basical Specification

Size of bit

8 1/2’’

Number of Blades

5

Primary Cutter Size

19mm

Nozzle Qty.

5NZ

Thread Connection

4 1/2 REG

Operating Parameters

RPM (r/min)

60~300

WOB(KN)

20~110

Application

Medium-hard to hard formations with low compressive strength, such as hard shale, limestone, sand-stone, dolomite, hard gypsum, marble, etc.

PDC cutters of different features are selected and bit profile design is potimized to suil different drilling applications in different formations to  satisfy different requirement when drilling soft to medium hard formations.

Better wear resistance and higher strength of the bit are quaranteed in regard to material and struccture by using matrix body material with quality materials.

Enhanced gage design to improve the bits ability of gage protection.

Deep blade and long parabolic configuration,ensure optimal bottom hole flow pattern and anti-balling.

Anti-whirl design improves ROP and enhances the drilling stability.

Accoring to the requiremnets of customers,design and produce different bits.


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NAVIGATION

Hejian Hengji Bit Manufacture Co.,LTD  is specialized in researching and production of rock drilling bits since 2012, mainly includes tricone bits, PDC bits, HDD hole opener, foundation single roller cutters, drag bits and related tools with advanced CNC machines and R&D team.

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Junziguan industrial zone, hejian city, hebei province
+86-317 8114222
+86-18232837832
+86-18232837832
+86-18232837832
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