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Hunan New Diamond Construction Machinery Co., Ltd.
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Professional TCI Tricone Drill Bit , Tricone Rock Bit 6 1/4” 159mm Diameter

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Professional TCI Tricone Drill Bit , Tricone Rock Bit 6 1/4” 159mm Diameter

Brand Name : New Diamond
Model Number : 6 1/4" 412 159mm Tricone drill Bits
Certification : ISO9001:2008
Place of Origin : Hunan, China (Mainland)
MOQ : Negotiable
Price : Negotiable
Payment Terms : L/C, T/T, Western Union
Supply Ability : According to order quantity
Delivery Time : 5-8 work days
Packaging Details : Carton packaging and wooden box packing
IADC Code : 412
Circulation Type : Jet Air
Pin Connection : 3 1/2” API
Metric Bit Diameter : 159mm
Product Weight : 20KG
Weight on Bit : 6,250-12,500Ibs
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Believe that the majority of oil industry people are very familiar with the roller cone bit, it is the most common type of drilling tools used in the modernization of the oil industry, with the acceleration of our country's modernization, the technical equipment throughout the oil industry is constantly updated In order to meet this rapid development trend, our company has specially introduced equipment with high standard production specifications. The products not only can meet the various needs in the domestic industry, but also the calcium products have gained sufficient international market To be sure, if you are interested in our roller bit products, we welcome you to contact us anytime and we will be happy to help you.



· Carefully check the bits appearance and to check the bits threaded end face,whether the serial number on the box and certificate.

· Selection of WOB and RPM should be within the limits of the recommended parameters, higher WOB and RPM cannot be used simultaneously.

· Drilling process must operate smoothly, find that there is Bie jump on abnormal phenomenon, should be timely analysis and take effective measures

· The bit should be kept indoor with dry and well ventilated conditions at 10-33℃ and kept from sunshine and rain. Stored under such conditions, quality of bit is guaranteed for 3 years.


Bit DiameterIADCApplicationsSpecial Features(Cutting Structure,Lug Protection)WeightPIN ConnOperating Suggestions WOB/RPM
6 1/4” 159mm412Very soft formations with low compressive strengths and high drillability.Chisel on gage,conical on inner rows;Hardmetal on lug;Wear resistant carbide on shirttail lip and lug.44203 1/2” API6,250-12,500Ibs/120-90RPM


Based on the calculating of the load distribution on the bearing components,all shareate bits incorporate bearings that have optimal geometry and load distribution designed to give maximum bearing life.

1. Non-Sealed Bearings

Bearing Type:Roller-Ball-Roller-Thrust Button without seal.

2. Sealed Bearings

Bearing Type:O-Ring Seal-Roller-Ball-Roller-Thrust Button. See

·The seal keeps the mud,cuttings,air and water ouside the bearings.

·The bearing works in lubricant and friction conditions,this results in less bearing wear and longer bearing life.

Product Tags:

milled tooth drill bit


roller cone drill bit

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