7 7/8′′ 200mm Hard Rock Drilling IADC 637 Three Conical Roller Chisel Bit

• Customization: Available
• Customized: Customized
• Standard: API
• Usage: Well Drilling
• Certification: ISO
• Model Number: Steel Tooth Bit, TCI Bit
• Bearing Type: Sealed Bearing
• Suitable Formation: Soft, Medium Soft, Hard, Medium Hard, Very Hard
• Color: Blue or Red
• Transport Package: Wooden Case
• Specification: according requirement
• Trademark: HJ
• Origin: China
• HS Code: 8207191
• Production Capacity: 500

Product Description

Product Description

  

HENGJI BIT  SPEC		IADC CODE 637
Diameter	7 7/8"(200mm)
Tooth Type	TCI
Bearing Type	Elastomer sealed bearing
Circulation Type	Mud fluid
Thread Connection	4 1/2 API REG PIN
Nozzle	three jet nozzles
Gauge Protection	Available
Shirttail Protection	Available
Operating Parameters
RPM(r/min)	80-40
WOB(KN)	0.5-1.2
Formations	Hard formations with high compressive strength, such as sandstone, limestone, dolomite ,hard gypsum, marble, etc
Application	water well drilling,oil &gas well drilling ,HDD,exploration,geothermal well drilling,drilling projects,etc

Detailed Photos

 

 

1. Journal bearing. Hardfaced head bearing surface.Inne hole of ocne is silve-plated.The load capacity and seizure resistance of the bearing is greatly improved.
2. O ring seal is mode of more wear resistant and high saturated buna-N with the increased seal section and precisely designed scaling flange in the cone sealing ares has increased the reliability of the seal.
3. All rubber compensator is used which can limit pressure differential and prevent drilling fluid from entering the lubrication system and thi provides the bearing system with good assurance of lubrication.
4. High weat resistance and excellent cutting ability pf the insert bit are given full play bu using carbide compacts of high strength and high toughness in comnination with optimized compact numbers and rows, the exposure height and special shaped compacts. For steel tooth tricone, the tooth surface is hard taced with new type of wear resistant material and thus has extended working life of the cutting structure while still maintaining high ROP.

 

Tricone rock drilling bit Features

  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.
Cutting Structure
Reinforcing the comprehensive mechanical properties of cutting tooth by using high quality tungsten carbide inserts of new formula and new techniques of insert bit.
Gauge Structure
The multiple heel position with gauge trimmer on the heel, tungsten carbide and hardfacing on the shirttail, strengthened spear point will enhance the gauge protection.

 

Overview of Tricone Bit

Tricone bit is mainly used in drilling, exploration, petroleum and trenchless as pilot bit. 
According to cutting material, Tricone bit can be divided into TCI bit and Steel tooth Bit.  
TCI bit adopts high-strength and high-toughness hard alloy teeth, optimized design of tooth row number, tooth number, tooth exposure height, and unique alloy tooth shape, giving full play to TCI bit's high wear resistance and excellent cutting ability.
New wear-resistant material is applied to weld the tooth surface of the Steel tooth bit, which can maintain the high penetration rate of the Steel tooth bit and improve the life of the cutting tooth of the bit.
According to the type of bearing, the tricone rock bit can be further divided into metal seal bearing and rubber seal bearing.

 

 

Product Parameters

IADC	WOB (KN/mm)	RPM (r/min)	Applicable Formations
114/116/117	0.3~0.75	180~60	Very soft formations with low compressive strength and high drillability, such as clay, mudstone, chalk, etc.
124/126/127	0.3~0.85	180~60	Soft formations with low compressive strength and high drillability, such as mudstone, gypsum, salt, soft limestone, etc.
134/135/136/137	0.3~0.95	150~60	Soft to medium formations with low compressive strength and high drillability, such as medium soft shale, hard gypsum, medium soft limestone, medium soft sandstone, soft formation with harder interbed, etc.
214/215/216/217	0.35~0.95	150~60	Medium formations with high compress strength, such as medium soft shale, hard gypsum , medium soft limestone, medium soft sandstone, soft formation with harder interbed, etc.
227	0.35~0.95	150~50	Medium hard formations with high compressive strength, such as abrasive shale, limestone, sandstone, dolomite, hard gypsum, marble,etc
Note: The upper limits of WOB and RPM in above table should not be used simultaneously.

IADC	WOB (KN/mm)	RPM (r/min)	Applicable Formations
417/437/  447/415/435	0.35~0.9	150~70	Very soft formations with low compressive strength and high drillability, such as clay, mudstone, chalk, gypsum, salt, soft limestone, etc.
517/527/515	0.35~1.0	140~60	Soft formations with low compressive strength and high drillability, such as mudstone, gypsum, salt, soft limestone, etc.
537/547/535	0.45~1.0	120~50	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.
617/615	0.45~1.1	90~50	Medium hard formation with high compress strength, such as hard shale, limestone, sandstone, dolomite. etc
637/635	0.5~1.2	80~40	Hard formations with high compressive strength, such as sandstone, limestone, dolomite ,hard gypsum, marble, etc.
Note: The upper limits of WOB and RPM in above table should not be used simultaneously.

Popular models
size	IADC CODE
4 1/2''(114.3mm)	115 117 127 217 417 437 517 537 637
4 3/4''(120.7mm)	115 117 127 217 417 437 517 537 637
5 7/8''(149mm)	115 117 127 217 417 437 517 537 637
6''(152mm)	115 117 127 217 417 437 517 537 637 737
6 1/2''(165mm)	115 117 127 217 417 437 517 537 617 627 637 737
7 1/2''(190mm)	115 117 127 217 417 437 517 537 617 627 637 737
7 7/8''(200mm)	115 117 127 217 417 437 517 537 617 627 637 737 837
8 1/2''(215.9mm)	115 117 127 217 417 437 517 537 617 627 637 737 837
8 3/4''(222.3mm)	115 117 127 217 417 437 517 537 617 627 637 737 837
9 5/8''(244.5mm)	115 117 127 217 417 437 517 537 617 627 637 737 837
9 7/8''(250.8mm)	115 117 127 137 217 417 437 517 537 617 627 637 737 837
11 5/8''(295.3mm)	115 117 127 217 417 437 517 537 617 627 637 737 837
12 1/4''(311.1mm)	115 117 127 217 417 437 517 537 617 627 637 737 837
14 3/4''(374.7mm)	115 117 127 217 417 437 517 537 617 627 637 737 837
15 1/2''(393.7mm)	115 117 127 217 417 437 517 537 617 627 637 737 837
17 1/2''(444.5mm)	115 117 127 217 237 417 437 517 537 617  637
20''(508mm)	115 117 127 217 237 437 517 537 637
22''(558.8mm)	115 117 127 217 437 517 537 637
24''(509.6mm)	115 117 127 217 437 517 537

 

Packaging & Shipping

Packaging  

Wood Box
Fumigation Tray if necessary
Other special package can be applied according to customer's need  

Delivery 
 

Prepared to deliver within 1 week, if in stock
Depends on order quantity, when out of stock
Transportation:By sea or air  

 

Company Profile

 

 Hejian Hengji Bit Manufacture Co.,LTD  is specialized in manufacturing high quality rock bit since 2001,especially for tricone bit,PDC bit,hole opener,single cone bit and drag bit.With advanced CNC machines and R&D team and on-time delivery. we have kept our clients ahead of schedule and under budget by providing the highest quality tools at the best possible prices .
    We ship to more than 40 different countries and serve industries such as Oil & Gas, water well , Construction,Mining,  Horizontal Directional Drilling (HDD), Geothermal and Environmental. Our experienced staff is here to assist you with everything from choosing the right bit to shipping around the globe.
     Our goal is to provide our customers with the best quality tools, accessories and service in the industry. We are supported by many years of experience, trained professionals and a full machine shop.  Reduce the cost ,Speed the drilling ,Guarantee the safety is always our aim.  We have been always insist on"Hengji bit,focusing on quality"

Certifications

 

Our Advantages

--The first-class engineers of tricone bits and PDC bits
--Advanced technology and Equipment, International standard.
--R&D center for rock drilling tools, high precision CNC machines, SGS&ISO Certified.
--10+ Years & 40+ Countries service experience.
--Optimized solutions for various of requirement.

 

FAQ

FAQ
1. Is your company a distributor or a manufacturer?
A:  Yes,We are a a professional factory of rock drilling bits   in China.
 
2. How  about your products?
A : All our activities are accredited to ISO 9001:2008, both in products and services, at the same time, mature production technology ensuring the quality satisfy international request.We have many high quality  prducts (https://hb-bits.en.made-in-china.com/) . 
  3.what is the Packaging & Delivery?
  A:We used high quality export carton or standard export woodern case
 
 4.what is the time about the delivery?
   A: repared to deliver within 1 week, if in stock.
Depends on order quantity, when out of stock,7-30days
Transportation:By sea or air
 5. How to order the products?
A: Send the inquiry with detail item description or with Model number. If there is no packing demand we take it as sea-way packing. If possible please attach one reference picture to avoid any misunderstanding or any links from our website for we get a better understanding.
 
 6.What is the website about your factory?
  A:Our website is: https://hb-bits.en.made-in-china.com/