Трехшарошечное сверло 8 дюймов 1/2

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	Size of Rock Bit	8 1/2 inch
		215.9mm
	IADC Code	537
	Thread Connection	4 1/2 API REG PIN
	Operating Parameters
	WOB (Weight On Bit)	19684~53428lbs
		0.5-1.05
	RPM	110-40
	Formation	Medium formation with high compressive strength ,such as medium soft shale,medium softlimestone,medium soft sandstone,medium formation with harder and abrasive interbeds,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

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

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.

 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

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.

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