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6 3/4'' 171mm IADC 537 Journal Sealed Bearing Tricone Drill Bit

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Introduction:

TCI Tricone Bit is suitable for soft to hard formation with low compressive strength and high drillability, such as mudstone, gypsum and soft limestone, etc. Tricone bit with high strength toughness of carbide tooth reduces rate of gear broken and with high-performance wear resistant materials improve the wear resistance and service life of the bit.


Features

1.Bearing Structure: High precision journal bearing with two thrust faces. Ball locked cone. Hardfaced head bearing surface. Cone bearing inlaid with friction reducing alloy and then silver-plated. Abrasion resistance and seizure resistance of the bearing are improved, and suitable for high rotary speed.

2.G-Gauge protection: more tungsten carbide inserts are placed in the gauge to reduce the wear in the abrasive formation. It can protect gauge and increases the stability and life of the bit.

3.Cutter: premium carbide teeth having increased resistance to breaking and abrasion, maximum increase cutting structure operating life.

4.Nozzle：These nozzles are much sturdier and provide greater flow capacity and maximize fluid distribution to the cones.

Technology

1.Seal and Lubrication: The bearing seal is adapting the high quality HNBR O-ring. The best seal compression and the radial seal structure can enhance the seal performance. The compensation system and the high quality bit grease can limit pressure differential, and greatly increase the lubricating reliability

2.Motor hardfacing: Tungsten carbide particle hardfacing is applied liberally along the shirttail and extended up the leading edge of the bit leg for additional protection in high-speed, directional or abrasive applications

12 14 537


HENGJI BIT  SPEC

IADC CODE 537

 6 12 537 (8)

Diameter

6 3/4"(171mm)

Tooth Type

TCI

Bearing Type

Elastomer sealed bearing

Circulation Type

Mud fluid

Thread Connection

3 1/2 API REG PIN

Nozzle

three jet nozzles

Gauge Protection

Available

Shirttail Protection

Available

Operating Parameters

RPM(r/min)

120~50

WOB(KN)

0.45~1.0

Formations

Soft to medium formations with low compressive strength, such as medium, soft shale, medium soft limestone, medium soft sandstone, medium formation with harder and abrasive interbeds, etc.

Application

water well drilling,oil &gas well drilling ,HDD,exploration,geothermal well drilling,drilling projects,etc

                                                  HENGJI Popular models

    Bit size

                           IADC CODE

API Connection

4 1/2''(114.3mm)

115 117 127 217 417 437 517 515 537 535 615 637

2 3/8 API REG

4 3/4''(120.7mm)

115 117 127 217 417 437 517 515 537 535 637

2 7/8 API REG

5 1/2''(139.7mm)

115 117 127 217 417 437 517 515 537 535 637

3 1/2 API REG

5 7/8''(149mm)

115 117 127 217 417 437 517 515 537 535 637 635

3 1/2 API REG

6''(152mm)

115 117 127 217 417 437 517 515 537 535 637 635 737 837

3 1/2 API REG

6 1/2''(165mm)

115 117 127 217 417 437 517 515 537 535 617 627 637 737

3 1/2 API REG

6 3/4''(171mm)

115 117 127 217 417 437 517 515 537 535 617 627 637 737

3 1/2 API REG

7 1/2''’(190mm)

115 117 127 217 417 437 517 515 537 535 617 615 627 637 737

4 1/2 API REG

7 7/8''(200mm)

115 117 127 217 417 437 517 515 537 535 617 627 637 737 837

4 1/2 API REG

8 1/2''(215.9mm)

115 117 127 217 417 437 517 515 537 617 627 637 737 837

4 1/2 API REG

8 3/4''(222.3mm)

115 117 127 217 417 437 517 515 537 535 617 627 637 737 837

4 1/2 API REG

9 5/8''’(244.5mm)

115 117 127 217 417 437 517 537 617 627 637 635 737 837

6 5/8 API REG

9 7/8''’(250.8mm)

115 117 127 137 217 417 437 517 537 535 617 627 637 737 837

6 5/8 API REG

11 5/8''(295.3mm)

115 117 127 217 417 437 517 537 535 617 627 637 737 837

6 5/8 API REG

12 1/4''(311.1mm)

115 117 127 217 417 437 517 537 535 617 627 637 737 837

6 5/8 API REG

14 3/4''(374.7mm)

115 117 127 217 417 437 517 537 535 617 627 637 737 837

7 5/8 API REG

15 1/2''(393.7mm)

115 117 127 217 417 437 517 537 535 617 627 637 737 837

7 5/8 API REG

17 1/2''(444.5mm)

115 117 127 217 237 417 437 517 515 537 535 617  637 635

7 5/8 API REG

20''(508mm)

115 117 127 217 237 437 517 515 537 535 637 635

7 5/8 API REG

22''(558.8mm)

115 117 127 217 437 517 515 537 535 637 635 737 837

7 5/8 API REG

24''(509.6mm)

115 117 127 217 437 517 515 537 535  637 635 737 837

7 5/8 API REG



合1

HR Series Rubber Sealed Bearing Bits 

Journal bearing.Hardfaced head bearing surface.inner hole of cone is silver-plated.The load capacity and seizure resistance of the bearing is greatly improved.0 ring seal is made of the more wear resistance high saturated buna-N with the increased seal section and precisely designed sealing flflange in the cone sealing area increased the reliability of the seal.



合3

HC Series Composite Sealed Bearing Bits

The series bits are sealed with composite rubber of sliding bearing,which can bear higher bit pressure and higher rotation speed,the service life of the bearings can be prolonged.

The bearing composite rubber seal ring, more suitable for the working environment and operating parameters of tricone bits.  

The bit is made of cemented carbide inserts with high strength and wear resistance ,the inserts strength and wear resistance improved.


合4

HM Series Metal Sealed Bearing Bits

Metal sealed with journal bearing. Hardfaced head bearing surface,inner hole of cone is silver-plated. The load capacity and sei-zure resistance of the bearing is greatly improved. High wear re-sistance and excellent cutting ability of the insert bit are given full play by using carbide compact of high strength and high toughness in combination with optimized compact numbers and rows,the exposure height and special shaped compacts


合2

Mining Tricone Drill Bits

HENGJI BIT ,mining tricone drill bit is mainly used in large open-pit mining operations,such as open-pit coal mines,copper Mines,iron ore mines,molybdenum mines and other non-ferrous metal mined.The bits are used on rotary drills, with a proven reputation of high performance and low cost.

Mining tricone dril bit consists of a bearing structure,cutting structure,shirttal and lug enhancement structures,flow channel system and a thread connection.

The bearing structure consists of lug bearing,cone bearing,seal beaing,main rollers,minor rollers ,locking bearing balls,axle thruse plate, and recess thrust plate,they are categorised into air cooled open bearing or sealed bearing.








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Hejian Hengji Bit Manufacture Co.,LTD  is specialized in researching and production of rock drilling bits , 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
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