Well Used Combination Drill Bit For Mining That Functioning Well

Well Used Combination Drill Bit For Mining That Functioning Well

Product description:

Well used combination drill bit for mining that functioning well

Company profile

Hebei guangtong Manufacturing Co is a professional manufacturer engaged in the research, development, production, sale and service of drill bits, PDC bits, core bits, drag bits, hole openers. Apart from the fact that our products selling well in almost all cities and provinces around China, our products also have enjoyed great popularity in world market, such countries and regions as USA, Europe, the Middle East. We also welcome O E M and O D M orders. Whether selecting a current product from our catalog or seeking assistance for your application, you are welcomed to talk to our customer service center about your sourcing requirements. We would like to establish direct business relations with you on the basis of equality and mutual benefit. We are sincerely waiting your kindly and prompt enquiry.

Product information

Combination drill bit for mining

1. This series tricone bit use Sealed roller bearing structure. With rollers arranged in grooves recessed in the cone body, the size of the bearing journal is increased.

2. Thrust bearing surfaces are hardfaced and treated with friction reducing technology.

3. Ball locked cone, suitable for high rotary speed.

Avaliable sizes


Bit Type





517, 537617, 637

6 1/2


517, 537

7 7/8



8 1/2



9 1/2



9 5/8


437517, 537547617

9 7/8


437517, 537547617

12 1/4


437517, 537547617627637

17 1/2





417517, 537547617637



417517, 537547617637

Detailed Description of the four types TCI Bits (Tungsten Carbide Insert Bit)

1. Metal-face sealed bearing TCI Bit

Cutting Structure

The durability of premium tungsten carbide inserts is improved with new formulas and new techniques for insert bit.

Gauge Structure

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

Sealed Bearing Structure

1. Abrasion resistance and seizure resistance of the bearing are improved and suitable for high rotary speed.
2. The advanced metal seal package will improve the reliability and durability of bearing seal.

Main Type Available

Size: 6', 6 1/2', 7 1/2', 8 1/2', 9 1/2', 9 5/8', 9 7/8', 12 1/4', 17 1/2', etc.
IADC Code: 4- Series, 5- Series, 6- Series, etc.


1. High-strength, high flexibility, high temperature, high wear resistance.

2. High-precision metal seal.

3. Locking roller ball, to adapt to high-speed.

4. The use of high strength high toughness carbide teeth.

5. Hours in the rotary cone bit with the impact, crushing and shearing the role of broken rock.

6. Cone bit to adapt to the soft, medium and hard of various strata.

7. Reasonable price and long working life.

Picture show

Any inquiry is welcomed here .

1) How to send money to us ?

We can send you our bank account information after the contract is made . By T/ T , Western union ....

2) What is the MOQ ?

mall trial order is acceptable , like 1pc, 2 pcs....

3) Inspection is possbile ?

Yes, you are welcome to our company at any time or you can make inspection through Third inspection agent .

like SGS , BV and so on .

4) How to transport the bits ?

By sea , by air , by DHL, by UPS and so on ....

Do you have any questions ? Please don't hesitate to ask me and you will get the satisfactory response once

you contact us .