Ready to Ship
Fast dispatch
In stock

Factory made 8 1/2 inch IADC437 sealed bearing soft rocks drilling TCI tricone bits

1-9 Pieces
>=10 Pieces
Min. Order
1 Piece
Choose your specifications
Company Information

Hebei Yichuan Drilling Equipment Manufacturing Co., Ltd.

CN Manufacturer, Trading Company
Response Time
Response Rate:
US$ 4,000+
4 Years Paid Supplier Gold Supplier Onsite Check Trade Assurance
Learn More

Quick Details

Place of Origin: Hebei China
Material: High Manganese Steel
Certification: AISI
Type: Drill Bit
Machine Type: Drilling Equipment
Processing Type: Forging
Use: Well Drilling
Size: 8 1/2inch
Material: 15CrNi4Mo
Thread Connection: 4 1/2REG
WOB(KN/MM): 0.70~1.20
RPM(r/min): 140~70
Advantage: Most favorable price and best quality
Bearing type: Sealed and non-sealed bearing
Formation: Hard formation
Nozzles: 3pcs
Packing: Fumigation free wooden case
Selling Units: Single item
Single package size: 25X25X35 cm
Single gross weight: 48 KG
Package Type: Fumigation wooden box
Package Preview:

Factory made 8 1/2 inch IADC437 sealed bearing hard rocks drilling TCI tricone bits

Related Products

Welcome visting Yichuan and know us more. This is the related products as follow, please click them if you also have intresting.

Product Description


200mm tricone rock bit (2).jpgSize of Rock Bit8 1/2 inch
 IADC Code437
Thread Connection4 1/2 API REG PIN
Operating Parameters
WOB (Weight On Bit)19684~53428lbs
FormationMedium formation with high compressive strength ,such as medium soft shale,medium softlimestone,medium soft sandstone,medium formation with harder and abrasive interbeds,etc.



Rock formation
WOB (KN/mm)
Low compressive strength, high drill-ability and extremely soft formation, like shale, clay, sandstone, conglomerate etc
Low compressive strength, high drill-ability and soft formation, like shale, clay, sandstone, soft limestone, salt rock, plaster etc.
Low compressive strength, high drill-ability and soft formation, like shale, clay, sandstone, soft limestone, salt rock, etc
Soft formation with low compressive, like Low compressive strength, high drill-ability and soft formation, like shale, clay, sandstone, soft limestone, salt rock, anhydrite etc.
Low compressive strength, medium hard formation with hard abrasive interlayer, like Hard shale, anhydrite, soft limestone, sandstone, dolomite with mezzanine, etc.
High compressive strength, medium hard and thick hard interlayer, like hard shale, limestone, sandstone, dolomite, etc.
High compressive strength, medium hard and high abrasive formation, like limestone, dolomite, sandstone, chert, etc.

Cutting Structure

The wear-resistance of the teeth is enhanced with premium tungsten carbide hardfacing on the tooth surfaces for the steel tooth bit.The durability of premium tungsten carbide inserts is improved with new formulas and new techniques for insert bit

Gauge Structure

Multiple gague protection with gauge trimmers on the heel and gauge inserts on the gauge surface of the cone,tungsten carbide inserts and hardfacing on the shirttail increases gauge holding capacity and bearing life.

Bearing Structure

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

Seal and Lubrication

The advanced metal seal package consists of two metal seals and two elastic energizers.Compressed energizers ensure good contact being kept on two sealing surfaces of metal rings by elastic force,and achieves the bearing seal.In the drilling,metal seals are relatively dynamic,and the energizers are static.This will improve the reliability and durability of bearing seal.The pressure compensator system and advanced grease can greatly increase the lubricating reliability.

Product Application

It is suitable for down hole motor and high speed applications

Product Details

 If you want to know more please contact us feel free CLICK HERE give us inquiry 

Factory made 8 1/2 inch IADC517 sealed bearing hard rocks drilling TCI tricone bits.jpgTCI TRICONE BIT (2).jpg

Company Information

Hebei Yichuan Drilling Equipment Manufacturing Co., Ltd has more than 20 years manufacturing and design experience,We specialize in researching and production of TCI Tricone Bit,Steel Tooth tricone bit,PDC bit,Drag bit,HDD hole opener,Tricone bit cutter and Drilling Accessories,application fields includes oil well drilling,gas well drilling,geothermal well drilling,mining,geological survey,hydrographic survey,water well drilling,HDD pipelinesprojects,foundation projects.

Our goal is provide the best quality products and service to our customers,we have professional R&D team,domestic advanced production equipment and precision instruments Reduce the cost,Speed the drilling,Guarantee the safety is always our aim.

Win-win cooperation is our ultimate pursuit. Contact us feel free if you are finding drill bit  manufacture.


Our Services

 1 We are manufacture can supply good quality goods and competitive price

 2  We not only have ourselves design but also can accept customization

 3  We have fast and on time delivery time

 4  Every bits have it's quality assurance 

 5 Contact our anytime if you have any question with bits.

 6 24 hours on time reply



Packaging & Shipping

For regualr packing is wooden case, diffrent size wooden case size diffrent.

Shipping you can choose by express by air by sea or by train.

If you have any other demand please contact us.



First of all we want let you know that we are one of more than 20 years manufacture loacted in Hejian City Hebei China.

We have so many clients from all over the world and not with the lowest price win clinet's choose, we depend on the quality to do business for every client. We know business not easy and get one client also very difficult so we must service in good faith. So please remember our promise that what you pay what you gain. We will honest offer the equel quality goods for you.  


1 Q: Are you manufacture?

    A: Yes, we are and more than 20 years.

2 Q: Where are you located in?

    A: We are located in Hejian City Cangzhou City Hebei China

3 Q:What's your mainly product?

    A: Our mainly products are TCI tricone bit, Steel tooth tricone bit, sigle cone bit, HDD HOLE OPPENER and so on.also can as per your demand produce such as PDC drag.

4 Q: What's your MOQ?

    A: Our MOQ 5 pieces, but if you just want sample test quality we also can supply to you.

5 Q: How many day with your delivery?

    A: We can delivery goods with 7 days if we have goods in stock, if need produce with your demand we will negotionation with you.

6 Q: Do you have used drill bit ?

    A: Yes we have and price are very competitive, welcome inquiry us anytime.

More question you want to know, contact us feel free without hesitaded. No matter how far from  us but Communication without borders.


Contact Us



anna contact.jpg



Company NameHebei Yichuan Drilling Equipment Manufacturing Co., Ltd 


 purchaing process.jpg


                                                                                                                          <<back home